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Could YOU be an installer? *huge mofo post*

Discussion in 'Car Audio' started by Tasmaniak, Aug 10, 2005.

  1. Tasmaniak

    Tasmaniak Not a valid input....

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    In light of recent posts stating that ANYONE can do the job of an automotive electronics installer. Here is the test to prove if you can or not.

    You know, I'm tired of people always saying that anyone can do this job. You can't just pick up a pair of wirecutters and bingo you can install a stereo....theres so much more then stereos as well. If you look at my signature, I state that I'm a MECP Master Class installer. It took me YEARS to get to my level and I'm damn proud of where I am. It only annoys me when people say that anyone can do this job. So, I rummaged around my boxes and I found my MECP BASIC installer qualification. Heres the questions and the multiple choice answers. How would you go?

    What are the four different electronic properties you will encounter?
    1, Amps, volts, ohms and joules
    2, Power, voltage, direct current, alternating current
    3, Resistance, voltage, ohms, inductance
    4, Voltage, current, resistance, power
    5, None of the above

    What is voltage?
    1, The rate of electron flow through a given point
    2, The electrical pressure that moves charged particles in a circuit
    3, The conductivity that various materials possess
    4, The relationship between current, resistance and power
    5, The conversion of energy into work over a certain period of time

    Which of the following cannot be determined by Ohm's Law?
    1, If a certain gauge wire is too small
    2, If the voltage supplied to an amplifier is too low
    3, If the system requires a more powerful amplifier
    4, If a higher output alternator is needed
    5, All of the above are correct

    Using a multimeter, you can measure current and voltage, but you cannot directly measure resistance in a live circuit.
    1, True
    2, False

    A Watt represents the conversion of one joule per second into:
    1, Light
    2, Heat
    3, Sound
    4, All of the above answers are correct

    What is the impact of Kirchoff's Voltage Law if there is a poorly crimped terminal in the installation?
    1, There is no impact
    2, One Volt dropped through a connector will reduce Voltage to the equipment by One Volt
    3, One Volt dropped through a connector will reduce Voltage to the equipment by two Volts (1:2 ratio)
    4, One Volt dropped through a connector will reduce Voltage to the equipment by three Volts (1:3 ratio)
    5, There is an impact, but it is too low to measure

    Which of the following is a characteristic of a resistor?
    1, Resists the flow of electrons
    2, Can be added to a signal cable to reduce the input signal voltage to an amplifier
    3, Can reduce the amount of power to a speaker
    4, Converts electrical energy to heat
    5, All of the above are correct

    An Electrolytic capacitor is known for its excellent sound quality and is used for the higher crossover frequencies.
    1, True
    2, False

    How do you determine the total resistance of a circuit?
    1, Add up all of the resistances
    2, Multiply all of the resistances
    3, Add the two highest resistances and divide by the lowest resistance
    4, divide the voltage into the current
    5, multiply the voltage by the current

    What does a passive crossover for a basic two-way system consist of?
    1, Two passive filters
    2, One passive filter and one active filter
    3, One capacitor for the tweeter and one inductor for the woofer
    4, One bandpass filter
    5, One passive filter and one relay

    According to Ohm's Law, if you want to calculate current you would:
    1, Take the square root of the resistance times the voltage
    2, Divide the resistance into the voltage
    3, Multiply the resistance and voltage
    4, Divide the voltage into the resistance

    What is the general rule regarding power and signal leads?
    1, Always run power and signal leads next to each other
    2, Depending on the installation, it is acceptable to cross the battery lead
    3, Run the wiring parallel to the car's factory wiring for ease of routing
    4, Depending on the installation, it is acceptable to cross the battery lead
    5, All of the above answers are correct

    Ground loops are the most frequent cause of noise problems in car audio installations.
    1, True
    2, False

    When should you use crimp connectors in installations?
    1, Always
    2, For the power lead
    3, For speaker connections
    4, Never

    How do you test for alternator whine?
    1, Turn the audio system on, turn the volume all the way down, then rev the engine
    2, Turn the audio system off, the rev the engine
    3, Use a noise sniffer
    4, Use a digital multimeter
    5, All of the above techniques can be used to test for alternator whine

    Which of the following is the best diagnostic tool for use on a brand new car with a computer-controlled ignition, computerized climate control system and a trip computer?
    1, VOM (volt-ohm meter)
    2, Test light
    3, DMM (digital multimeter)
    4, Hydrometer

    If you want to check the amperage draw of a component or security system brain, and the suspect component is not blowing the supplied fuse, you should set your amperage scale on your VOM to a range above the fuse rating of the component.
    1, True
    2, False

    Which type of fire extinguisher is best suited for a mobile electronics shop?
    1, Type A
    2, Type B
    3, Type C
    4, Halon
    5, All of the above are acceptable

    What is the first step involved in troubleshooting for system noise problems?
    1, Eliminating the source of the problem
    2, Identifying the type of noise
    3, Determining the various makes and models of products in the system
    4, Finding out when the problem was first noticed

    At what frequency is the human ear most sensitive?
    1, 25 Hz to 35 Hz
    2, 100 Hz to 250 Hz
    3, 1,000 Hz to 2,000 Hz
    4, 15,000 Hz to 20,000 Hz

    What is sympathetic vibration?
    1, Noise made by processors
    2, The natural resonance of an object
    3, Distortion
    4, Ignition noise

    An audio signal is an electrical representation of what?
    1, Sound wave
    2, Octave
    3, Potentiometer
    4, Inductance

    Destructive interference refers to two speakers whose sound waves are working against each other and are out of phase by:
    1, 45 degrees
    2, 90 degrees
    3, 180 degrees
    4, 270 degrees
    5, 360 degrees

    A magnetic Reed Switch, also called a magnetic proximity switch:
    1, Uses magnetic force to cause a set of contacts to connect
    2, Uses Kinetic energy to open and close a set of contacts
    3, Has input for multiple switch triggers
    4, Can replace the use of a relay

    The most common device to interrupt a vehicle's starter is a:
    1, Electronic switching capacitor
    2, Heavy duty diode
    3, Electromagnetic switch
    4, Pulse timer

    An impact sensor the best device to detect breaking glass during a break-in attempt?
    1, True
    2, False

    A pulse or unversal timer can be used to:
    1, Remove unwanted EMI from your security system
    2, Add a pulsed output for alternating flashing parking lights
    3, Convert a momentary duration pause into a longer or shorter duration signal
    4, Reverse the pulse from negative to positive for door triggers

    A glass-mount antenna will transmit and receive best:
    1, When mounted over two defogger grids
    2, When it is mounted over an FM antenna grid
    3, When mounted between or above the defogger grids
    4, When placed at a 45 degree angle to the ground plane

    Extending the length of the RG58 coax cable supplied by the manufacturer can result in as much as 3dB of signal loss.
    1, True
    2, False

    The small holes on the side of the hands-free microphone are commonly used for...
    1, Decoration
    2, Noise canceling
    3, The mounting clip
    4, Water drainage

    Painting a cellular antenna mast with car paint typically causes up to 1 dB of signal loss.
    1, True
    2, False

    Which of the following materials will not attenuate the signal from a GPS Antenna:
    1, Metallic window tint
    2, Line defrosters
    3, Electrically heated windshields
    4, Factory pigment tinted glass

    The best choice of mounting position for the GPS antenna is:
    1, Under the trunk lid
    2, Under the hood
    3, Under the headliner
    4, On the rear deck or dash
    5, On the center console

    The length of antenna cable on a GPS receiver is:
    1, Unmatched
    2, Preset
    3, Random
    4, Uncorrelated

    A true VSS signal will vary in proportion with:
    1, Engine temperature
    2, Engine RPM
    3, Ignition voltage
    4, Battery voltage
    5, Vehicle speed

    When testing a digital VSS with a DMM set to a minimum 30VDC range, the DMM display should:
    1, Fluctuate between 5 to12 volts with tire rotation
    2, Starts at 12 volts and rises as tire rotation increases
    3, Change between 0 and 5 to12 with the engine running
    4, Increase from 0 volts as the engine RPM increases

    Make a post with your answer and I will give you the yes or no answers ;)

    btw, to actually get your BASIC installer certificate, you need a 85% pass. Good Luck!
     
  2. ducatis

    ducatis New Member

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    Now dont have a go at me.... i havent been into the car stereo thing long..only 1 install anyway ill mark my answer with a "-"

    What are the four different electronic properties you will encounter?
    1, Amps, volts, ohms and joules
    2, Power, voltage, direct current, alternating current
    3, Resistance, voltage, ohms, inductance
    4, Voltage, current, resistance, power ----
    5, None of the above

    What is voltage?
    1, The rate of electron flow through a given point
    2, The electrical pressure that moves charged particles in a circuit ----
    3, The conductivity that various materials possess
    4, The relationship between current, resistance and power
    5, The conversion of energy into work over a certain period of time

    Which of the following cannot be determined by Ohm's Law?
    1, If a certain gauge wire is too small
    2, If the voltage supplied to an amplifier is too low
    3, If the system requires a more powerful amplifier
    4, If a higher output alternator is needed
    5, All of the above are correct ----

    Using a multimeter, you can measure current and voltage, but you cannot directly measure resistance in a live circuit.
    1, True
    2, False ----

    A Watt represents the conversion of one joule per second into:
    1, Light
    2, Heat
    3, Sound ---(isnt it power?)---
    4, All of the above answers are correct

    What is the impact of Kirchoff's Voltage Law if there is a poorly crimped terminal in the installation?
    1, There is no impact
    2, One Volt dropped through a connector will reduce Voltage to the equipment by One Volt
    3, One Volt dropped through a connector will reduce Voltage to the equipment by two Volts (1:2 ratio)
    4, One Volt dropped through a connector will reduce Voltage to the equipment by three Volts (1:3 ratio) --------------------
    5, There is an impact, but it is too low to measure

    Which of the following is a characteristic of a resistor?
    1, Resists the flow of electrons ---
    2, Can be added to a signal cable to reduce the input signal voltage to an amplifier
    3, Can reduce the amount of power to a speaker
    4, Converts electrical energy to heat
    5, All of the above are correct

    An Electrolytic capacitor is known for its excellent sound quality and is used for the higher crossover frequencies.
    1, True
    2, False ---

    How do you determine the total resistance of a circuit?
    1, Add up all of the resistances
    2, Multiply all of the resistances
    3, Add the two highest resistances and divide by the lowest resistance
    4, divide the voltage into the current ---
    5, multiply the voltage by the current

    What does a passive crossover for a basic two-way system consist of?
    1, Two passive filters
    2, One passive filter and one active filter
    3, One capacitor for the tweeter and one inductor for the woofer ---
    4, One bandpass filter
    5, One passive filter and one relay

    According to Ohm's Law, if you want to calculate current you would:
    1, Take the square root of the resistance times the voltage
    2, Divide the resistance into the voltage
    3, Multiply the resistance and voltage
    4, Divide the voltage into the resistance ---

    What is the general rule regarding power and signal leads?
    1, Always run power and signal leads next to each other ---
    2, Depending on the installation, it is acceptable to cross the battery lead
    3, Run the wiring parallel to the car's factory wiring for ease of routing
    4, Depending on the installation, it is acceptable to cross the battery lead
    5, All of the above answers are correct

    Ground loops are the most frequent cause of noise problems in car audio installations.
    1, True ---
    2, False

    When should you use crimp connectors in installations?
    1, Always
    2, For the power lead
    3, For speaker connections ---(solder :)
    4, Never

    How do you test for alternator whine?
    1, Turn the audio system on, turn the volume all the way down, then rev the engine ---
    2, Turn the audio system off, the rev the engine
    3, Use a noise sniffer
    4, Use a digital multimeter
    5, All of the above techniques can be used to test for alternator whine

    Which of the following is the best diagnostic tool for use on a brand new car with a computer-controlled ignition, computerized climate control system and a trip computer?
    1, VOM (volt-ohm meter)
    2, Test light
    3, DMM (digital multimeter) ---
    4, Hydrometer

    If you want to check the amperage draw of a component or security system brain, and the suspect component is not blowing the supplied fuse, you should set your amperage scale on your VOM to a range above the fuse rating of the component.
    1, True ---
    2, False

    Which type of fire extinguisher is best suited for a mobile electronics shop?
    1, Type A
    2, Type B ---
    3, Type C
    4, Halon
    5, All of the above are acceptable

    What is the first step involved in troubleshooting for system noise problems?
    1, Eliminating the source of the problem
    2, Identifying the type of noise ---
    3, Determining the various makes and models of products in the system
    4, Finding out when the problem was first noticed

    At what frequency is the human ear most sensitive?
    1, 25 Hz to 35 Hz
    2, 100 Hz to 250 Hz
    3, 1,000 Hz to 2,000 Hz
    4, 15,000 Hz to 20,000 Hz ---

    What is sympathetic vibration?
    1, Noise made by processors
    2, The natural resonance of an object ---
    3, Distortion
    4, Ignition noise

    An audio signal is an electrical representation of what?
    1, Sound wave ---
    2, Octave
    3, Potentiometer
    4, Inductance

    Destructive interference refers to two speakers whose sound waves are working against each other and are out of phase by:
    1, 45 degrees
    2, 90 degrees
    3, 180 degrees
    4, 270 degrees
    5, 360 degrees ---

    A magnetic Reed Switch, also called a magnetic proximity switch:
    1, Uses magnetic force to cause a set of contacts to connect ---
    2, Uses Kinetic energy to open and close a set of contacts
    3, Has input for multiple switch triggers
    4, Can replace the use of a relay

    The most common device to interrupt a vehicle's starter is a:
    1, Electronic switching capacitor
    2, Heavy duty diode
    3, Electromagnetic switch ---
    4, Pulse timer

    An impact sensor the best device to detect breaking glass during a break-in attempt?
    1, True
    2, False ---

    A pulse or unversal timer can be used to:
    1, Remove unwanted EMI from your security system
    2, Add a pulsed output for alternating flashing parking lights
    3, Convert a momentary duration pause into a longer or shorter duration signal
    4, Reverse the pulse from negative to positive for door triggers ---

    A glass-mount antenna will transmit and receive best:
    1, When mounted over two defogger grids
    2, When it is mounted over an FM antenna grid
    3, When mounted between or above the defogger grids ---
    4, When placed at a 45 degree angle to the ground plane

    Extending the length of the RG58 coax cable supplied by the manufacturer can result in as much as 3dB of signal loss.
    1, True ---
    2, False

    The small holes on the side of the hands-free microphone are commonly used for...
    1, Decoration
    2, Noise canceling
    3, The mounting clip ---
    4, Water drainage

    Painting a cellular antenna mast with car paint typically causes up to 1 dB of signal loss.
    1, True ---
    2, False

    Which of the following materials will not attenuate the signal from a GPS Antenna:
    1, Metallic window tint
    2, Line defrosters
    3, Electrically heated windshields
    4, Factory pigment tinted glass ---

    The best choice of mounting position for the GPS antenna is:
    1, Under the trunk lid
    2, Under the hood
    3, Under the headliner
    4, On the rear deck or dash ---
    5, On the center console

    The length of antenna cable on a GPS receiver is:
    1, Unmatched
    2, Preset ---
    3, Random
    4, Uncorrelated

    A true VSS signal will vary in proportion with:
    1, Engine temperature
    2, Engine RPM
    3, Ignition voltage
    4, Battery voltage
    5, Vehicle speed ---

    When testing a digital VSS with a DMM set to a minimum 30VDC range, the DMM display should:
    1, Fluctuate between 5 to12 volts with tire rotation ---
    2, Starts at 12 volts and rises as tire rotation increases
    3, Change between 0 and 5 to12 with the engine running
    4, Increase from 0 volts as the engine RPM increases



    Some ive never heard of...
     
  3. michaelw

    michaelw Donating Member

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    Audio is not my thing but I'll play.


    What are the four different electronic properties you will encounter?
    1, Amps, volts, ohms and joules
    2, Power, voltage, direct current, alternating current
    3, Resistance, voltage, ohms, inductance
    4, Voltage, current, resistance, power
    5, None of the above

    M:4, amps,ohms,joules and volts are units not properties, thus 4.


    What is voltage?
    1, The rate of electron flow through a given point
    2, The electrical pressure that moves charged particles in a circuit
    3, The conductivity that various materials possess
    4, The relationship between current, resistance and power
    5, The conversion of energy into work over a certain period of time

    M: Joules per Columb as measured between two points. Closest answer 2??

    Which of the following cannot be determined by Ohm's Law?
    1, If a certain gauge wire is too small
    2, If the voltage supplied to an amplifier is too low
    3, If the system requires a more powerful amplifier
    4, If a higher output alternator is needed
    5, All of the above are correct

    M:5

    Using a multimeter, you can measure current and voltage, but you cannot directly measure resistance in a live circuit.
    1, True
    2, False

    M:2 not unless you are being really tricky, then you are not using a standard MM

    A Watt represents the conversion of one joule per second into:
    1, Light
    2, Heat
    3, Sound
    4, All of the above answers are correct

    M:4 W=j/s does not matter what it is

    What is the impact of Kirchoff's Voltage Law if there is a poorly crimped terminal in the installation?
    1, There is no impact
    2, One Volt dropped through a connector will reduce Voltage to the equipment by One Volt
    3, One Volt dropped through a connector will reduce Voltage to the equipment by two Volts (1:2 ratio)
    4, One Volt dropped through a connector will reduce Voltage to the equipment by three Volts (1:3 ratio)
    5, There is an impact, but it is too low to measure

    M: 2 Kirchoff said that all voltages around a loop will sum to zero. thus a 1V drop will equal one less volt.

    Which of the following is a characteristic of a resistor?
    1, Resists the flow of electrons
    2, Can be added to a signal cable to reduce the input signal voltage to an amplifier
    3, Can reduce the amount of power to a speaker
    4, Converts electrical energy to heat
    5, All of the above are correct

    M:5

    An Electrolytic capacitor is known for its excellent sound quality and is used for the higher crossover frequencies.
    1, True
    2, False

    M:2 Electrolytics are polar, no good for bipolar signals.

    How do you determine the total resistance of a circuit?
    1, Add up all of the resistances
    2, Multiply all of the resistances
    3, Add the two highest resistances and divide by the lowest resistance
    4, divide the voltage into the current
    5, multiply the voltage by the current

    M: R = V/I I think that is 4, funny wording on this one.

    What does a passive crossover for a basic two-way system consist of?
    1, Two passive filters
    2, One passive filter and one active filter
    3, One capacitor for the tweeter and one inductor for the woofer
    4, One bandpass filter
    5, One passive filter and one relay

    M:3

    According to Ohm's Law, if you want to calculate current you would:
    1, Take the square root of the resistance times the voltage
    2, Divide the resistance into the voltage
    3, Multiply the resistance and voltage
    4, Divide the voltage into the resistance

    M: I=V/R 4? again funny wording

    What is the general rule regarding power and signal leads?
    1, Always run power and signal leads next to each other
    2, Depending on the installation, it is acceptable to cross the battery lead
    3, Run the wiring parallel to the car's factory wiring for ease of routing
    4, Depending on the installation, it is acceptable to cross the battery lead
    5, All of the above answers are correct

    M:2 and 4 are the same. Assuming a balanced system, the signal leads should be coupled. I would not want to couple the supply with a signal.

    Ground loops are the most frequent cause of noise problems in car audio installations.
    1, True
    2, False

    M:2, ground loops are more a mains problem.

    When should you use crimp connectors in installations?
    1, Always
    2, For the power lead
    3, For speaker connections
    4, Never

    M:1, perhaps anderson plugs for doff doffs

    How do you test for alternator whine?
    1, Turn the audio system on, turn the volume all the way down, then rev the engine
    2, Turn the audio system off, the rev the engine
    3, Use a noise sniffer
    4, Use a digital multimeter
    5, All of the above techniques can be used to test for alternator whine

    M:1

    Which of the following is the best diagnostic tool for use on a brand new car with a computer-controlled ignition, computerized climate control system and a trip computer?
    1, VOM (volt-ohm meter)
    2, Test light
    3, DMM (digital multimeter)
    4, Hydrometer

    M:2 assuming the car can flash the code.

    If you want to check the amperage draw of a component or security system brain, and the suspect component is not blowing the supplied fuse, you should set your amperage scale on your VOM to a range above the fuse rating of the component.
    1, True
    2, False

    M:1 higer current setting, the lower the meter's shunt value would be, thus the less effect it will have.

    Which type of fire extinguisher is best suited for a mobile electronics shop?
    1, Type A
    2, Type B
    3, Type C
    4, Halon
    5, All of the above are acceptable

    M: Halon is now banned. Type A fires most likely. Cars have lots of plastic in them. I would use a dry chemical. CO2 would do SFA and water would be very bad.

    What is the first step involved in troubleshooting for system noise problems?
    1, Eliminating the source of the problem
    2, Identifying the type of noise
    3, Determining the various makes and models of products in the system
    4, Finding out when the problem was first noticed

    M2: can't fix a problem unless you know what it is

    At what frequency is the human ear most sensitive?
    1, 25 Hz to 35 Hz
    2, 100 Hz to 250 Hz
    3, 1,000 Hz to 2,000 Hz
    4, 15,000 Hz to 20,000 Hz

    M:4 seems to hurt more??

    What is sympathetic vibration?
    1, Noise made by processors
    2, The natural resonance of an object
    3, Distortion
    4, Ignition noise

    M:2

    An audio signal is an electrical representation of what?
    1, Sound wave
    2, Octave
    3, Potentiometer
    4, Inductance

    M:1

    Destructive interference refers to two speakers whose sound waves are working against each other and are out of phase by:
    1, 45 degrees
    2, 90 degrees
    3, 180 degrees
    4, 270 degrees
    5, 360 degrees

    M:3

    A magnetic Reed Switch, also called a magnetic proximity switch:
    1, Uses magnetic force to cause a set of contacts to connect
    2, Uses Kinetic energy to open and close a set of contacts
    3, Has input for multiple switch triggers
    4, Can replace the use of a relay

    M:1

    The most common device to interrupt a vehicle's starter is a:
    1, Electronic switching capacitor
    2, Heavy duty diode
    3, Electromagnetic switch
    4, Pulse timer

    M:3=relay=seloniod=contactor

    An impact sensor the best device to detect breaking glass during a break-in attempt?
    1, True
    2, False

    M:2

    A pulse or unversal timer can be used to:
    1, Remove unwanted EMI from your security system
    2, Add a pulsed output for alternating flashing parking lights
    3, Convert a momentary duration pause into a longer or shorter duration signal
    4, Reverse the pulse from negative to positive for door triggers

    M:3

    A glass-mount antenna will transmit and receive best:
    1, When mounted over two defogger grids
    2, When it is mounted over an FM antenna grid
    3, When mounted between or above the defogger grids
    4, When placed at a 45 degree angle to the ground plane

    M:4

    Extending the length of the RG58 coax cable supplied by the manufacturer can result in as much as 3dB of signal loss.
    1, True
    2, False
    M:1

    The small holes on the side of the hands-free microphone are commonly used for...
    1, Decoration
    2, Noise canceling
    3, The mounting clip
    4, Water drainage
    M:2

    Painting a cellular antenna mast with car paint typically causes up to 1 dB of signal loss.
    1, True
    2, False
    M:1

    Which of the following materials will not attenuate the signal from a GPS Antenna:
    1, Metallic window tint
    2, Line defrosters
    3, Electrically heated windshields
    4, Factory pigment tinted glass
    M:4

    The best choice of mounting position for the GPS antenna is:
    1, Under the trunk lid
    2, Under the hood
    3, Under the headliner
    4, On the rear deck or dash
    5, On the center console
    M:4 assuming it can see more sky

    The length of antenna cable on a GPS receiver is:
    1, Unmatched
    2, Preset
    3, Random
    4, Uncorrelated
    M:3, unimportant most GPS antennas are active.

    A true VSS signal will vary in proportion with:
    1, Engine temperature
    2, Engine RPM
    3, Ignition voltage
    4, Battery voltage
    5, Vehicle speed
    M:5 VSS=vechicle speed sensor??

    When testing a digital VSS with a DMM set to a minimum 30VDC range, the DMM display should:
    1, Fluctuate between 5 to12 volts with tire rotation
    2, Starts at 12 volts and rises as tire rotation increases
    3, Change between 0 and 5 to12 with the engine running
    4, Increase from 0 volts as the engine RPM increases
    M:1 Assuming a hall sensor?


    Make a post with your answer and I will give you the yes or no answers ;)

    btw, to actually get your BASIC installer certificate, you need a 85% pass. Good Luck![/QUOTE]
     
    Last edited: Aug 10, 2005
  4. Mike S

    Mike S Car Audio Pro

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    Some interesting questions there Rattler, I'll have a go when I get a few minutes tomorow, but at a quick glance most look pretty staight forward but I'd say theres a few tricky ones there and I'd say by the chilling silence youve lost most of the regular posters in the dust ........ lol

    Mike :)
     
  5. stumps5L

    stumps5L New Member

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    All be it so that to be a qualified installer at the basic level u need to know that stuff. it is also true u dont need to knwo that stuff to have a half decent install in your ride. ive done high school physics and can answer most of those questions. However i have installed at least 4 complete stereos for me and my friends it may not be professional standard but it still sounds good and i didnt use any of my physics knowledge. Most of the people on here are asking how to install a stereo because they dont want to pay top dollars to audio shops. Thus meaning they are not after a top quality instalation. SO i believe that any can install a stereo in there ride and get ti to sound half decent. But matching frequencies and working out resistance is another matter and that is why professionals get payed top dollars for install.
     
  6. Phreddy

    Phreddy Bye SV6 - still love you

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    Nice one Trunk!

    I'll have a go when I get a minute up my sleeve. :rofl:

    (quietened a few of 'em down though huh?) ;)

    Cheerz Mate!
     
  7. dephilile

    dephilile New Member

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    I wasn’t really sure about a few of these hey. What the hell is a VSS signal? I’m keen to see how I went.

    What are the four different electronic properties you will encounter?
    1, Amps, volts, ohms and joules
    2, Power, voltage, direct current, alternating current<<<<
    3, Resistance, voltage, ohms, inductance
    4, Voltage, current, resistance, power
    5, None of the above

    What is voltage?
    1, The rate of electron flow through a given point
    2, The electrical pressure that moves charged particles in a circuit<<<<
    3, The conductivity that various materials possess
    4, The relationship between current, resistance and power
    5, The conversion of energy into work over a certain period of time

    Which of the following cannot be determined by Ohm's Law?
    1, If a certain gauge wire is too small
    2, If the voltage supplied to an amplifier is too low
    3, If the system requires a more powerful amplifier
    4, If a higher output alternator is needed<<<<
    5, All of the above are correct

    Using a multimeter, you can measure current and voltage, but you cannot directly measure resistance in a live circuit.
    1, True<<<<
    2, False

    A Watt represents the conversion of one joule per second into:
    1, Light
    2, Heat
    3, Sound
    4, All of the above answers are correct<<<<

    What is the impact of Kirchoff's Voltage Law if there is a poorly crimped terminal in the installation?
    1, There is no impact
    2, One Volt dropped through a connector will reduce Voltage to the equipment by One Volt<<<<
    3, One Volt dropped through a connector will reduce Voltage to the equipment by two Volts (1:2 ratio)
    4, One Volt dropped through a connector will reduce Voltage to the equipment by three Volts (1:3 ratio)
    5, There is an impact, but it is too low to measure

    Which of the following is a characteristic of a resistor?
    1, Resists the flow of electrons
    2, Can be added to a signal cable to reduce the input signal voltage to an amplifier
    3, Can reduce the amount of power to a speaker
    4, Converts electrical energy to heat
    5, All of the above are correct<<<<

    An Electrolytic capacitor is known for its excellent sound quality and is used for the higher crossover frequencies.
    1, True<<<<
    2, False

    How do you determine the total resistance of a circuit?
    1, Add up all of the resistances
    2, Multiply all of the resistances
    3, Add the two highest resistances and divide by the lowest resistance
    4, divide the voltage into the current<<<<
    5, multiply the voltage by the current

    What does a passive crossover for a basic two-way system consist of?
    1, Two passive filters
    2, One passive filter and one active filter
    3, One capacitor for the tweeter and one inductor for the woofer<<<<
    4, One bandpass filter
    5, One passive filter and one relay

    According to Ohm's Law, if you want to calculate current you would:
    1, Take the square root of the resistance times the voltage
    2, Divide the resistance into the voltage<<<<
    3, Multiply the resistance and voltage
    4, Divide the voltage into the resistance

    What is the general rule regarding power and signal leads?
    1, Always run power and signal leads next to each other
    2, Depending on the installation, it is acceptable to cross the battery lead<<<<
    3, Run the wiring parallel to the car's factory wiring for ease of routing
    4, Depending on the installation, it is acceptable to cross the battery lead<<<<
    5, All of the above answers are correct

    Ground loops are the most frequent cause of noise problems in car audio installations.
    1, True<<<<
    2, False

    When should you use crimp connectors in installations?
    1, Always
    2, For the power lead<<<<
    3, For speaker connections
    4, Never

    How do you test for alternator whine?
    1, Turn the audio system on, turn the volume all the way down, then rev the engine<<<<
    2, Turn the audio system off, the rev the engine
    3, Use a noise sniffer
    4, Use a digital multimeter
    5, All of the above techniques can be used to test for alternator whine

    Which of the following is the best diagnostic tool for use on a brand new car with a computer-controlled ignition, computerized climate control system and a trip computer?
    1, VOM (volt-ohm meter)
    2, Test light
    3, DMM (digital multimeter)<<<<
    4, Hydrometer

    If you want to check the amperage draw of a component or security system brain, and the suspect component is not blowing the supplied fuse, you should set your amperage scale on your VOM to a range above the fuse rating of the component.
    1, True<<<<
    2, False

    Which type of fire extinguisher is best suited for a mobile electronics shop?
    1, Type A
    2, Type B
    3, Type C<<<<
    4, Halon
    5, All of the above are acceptable
    i think your meant to use Carbon Dioxide extinguishers, i'm not sure what letter they are.

    What is the first step involved in troubleshooting for system noise problems?
    1, Eliminating the source of the problem
    2, Identifying the type of noise
    3, Determining the various makes and models of products in the system
    4, Finding out when the problem was first noticed<<<<

    At what frequency is the human ear most sensitive?
    1, 25 Hz to 35 Hz
    2, 100 Hz to 250 Hz
    3, 1,000 Hz to 2,000 Hz
    4, 15,000 Hz to 20,000 Hz<<<<

    What is sympathetic vibration?
    1, Noise made by processors
    2, The natural resonance of an object<<<<
    3, Distortion
    4, Ignition noise

    An audio signal is an electrical representation of what?
    1, Sound wave<<<<
    2, Octave
    3, Potentiometer
    4, Inductance

    Destructive interference refers to two speakers whose sound waves are working against each other and are out of phase by:
    1, 45 degrees
    2, 90 degrees
    3, 180 degrees<<<
    4, 270 degrees
    5, 360 degrees

    A magnetic Reed Switch, also called a magnetic proximity switch:
    1, Uses magnetic force to cause a set of contacts to connect<<<<
    2, Uses Kinetic energy to open and close a set of contacts
    3, Has input for multiple switch triggers
    4, Can replace the use of a relay

    The most common device to interrupt a vehicle's starter is a:
    1, Electronic switching capacitor<<<<
    2, Heavy duty diode
    3, Electromagnetic switch
    4, Pulse timer

    An impact sensor the best device to detect breaking glass during a break-in attempt?
    1, True<<<<
    2, False

    A pulse or unversal timer can be used to:
    1, Remove unwanted EMI from your security system<<<<
    2, Add a pulsed output for alternating flashing parking lights
    3, Convert a momentary duration pause into a longer or shorter duration signal
    4, Reverse the pulse from negative to positive for door triggers

    A glass-mount antenna will transmit and receive best:
    1, When mounted over two defogger grids
    2, When it is mounted over an FM antenna grid
    3, When mounted between or above the defogger grids<<<<
    4, When placed at a 45 degree angle to the ground plane

    Extending the length of the RG58 coax cable supplied by the manufacturer can result in as much as 3dB of signal loss.
    1, True
    2, False<<<<

    The small holes on the side of the hands-free microphone are commonly used for...
    1, Decoration
    2, Noise canceling<<<<
    3, The mounting clip
    4, Water drainage

    Painting a cellular antenna mast with car paint typically causes up to 1 dB of signal loss.
    1, True
    2, False<<<<

    Which of the following materials will not attenuate the signal from a GPS Antenna:
    1, Metallic window tint
    2, Line defrosters
    3, Electrically heated windshields
    4, Factory pigment tinted glass<<<<

    The best choice of mounting position for the GPS antenna is:
    1, Under the trunk lid
    2, Under the hood
    3, Under the headliner
    4, On the rear deck or dash<<<<
    5, On the center console

    The length of antenna cable on a GPS receiver is:
    1, Unmatched
    2, Preset<<<<
    3, Random
    4, Uncorrelated

    A true VSS signal will vary in proportion with:
    1, Engine temperature
    2, Engine RPM<<<<
    3, Ignition voltage
    4, Battery voltage
    5, Vehicle speed

    When testing a digital VSS with a DMM set to a minimum 30VDC range, the DMM display should:
    1, Fluctuate between 5 to12 volts with tire rotation
    2, Starts at 12 volts and rises as tire rotation increases
    3, Change between 0 and 5 to12 with the engine running
    4, Increase from 0 volts as the engine RPM increases
     
  8. Tasmaniak

    Tasmaniak Not a valid input....

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    Funny thing huh? lol, so far no one would cut it as an installer. Over the next couple of days I will correct all your answers and PM you the results, then once the thread has died down and no one responds to it after awhile, I will post up all your results.

    VSS Vehicle Speed Sensor
     
  9. vlv8vic

    vlv8vic <---Brad Quaid = internet stalker

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    ok well ive put in all my stereos and never had any problems. i also fix my car when things go wrong and dont know jack **** about flow, octane levels or bloody anything. i can make an unreal homebrew and get every plastered on great tasting beer for $10 but i have no idea how yeast works.
    anyway if it makes you feel 'special' ill have a go. itll tell me exactly what year 12 chem and physics did = i suck at them both. here goes.

    What are the four different electronic properties you will encounter?
    1, Amps, volts, ohms and joules
    2, Power, voltage, direct current, alternating current
    3, Resistance, voltage, ohms, inductance=============
    4, Voltage, current, resistance, power
    5, None of the above

    What is voltage?
    1, The rate of electron flow through a given point
    2, The electrical pressure that moves charged particles in a circuit=========
    3, The conductivity that various materials possess
    4, The relationship between current, resistance and power
    5, The conversion of energy into work over a certain period of time

    Which of the following cannot be determined by Ohm's Law?
    1, If a certain gauge wire is too small
    2, If the voltage supplied to an amplifier is too low
    3, If the system requires a more powerful amplifier
    4, If a higher output alternator is needed
    5, All of the above are correct=======================

    Using a multimeter, you can measure current and voltage, but you cannot directly measure resistance in a live circuit.
    1, True
    2, False================

    A Watt represents the conversion of one joule per second into:
    1, Light
    2, Heat
    3, Sound
    4, All of the above answers are correct=============

    What is the impact of Kirchoff's Voltage Law if there is a poorly crimped terminal in the installation?
    1, There is no impact
    2, One Volt dropped through a connector will reduce Voltage to the equipment by One Volt
    3, One Volt dropped through a connector will reduce Voltage to the equipment by two Volts (1:2 ratio)
    4, One Volt dropped through a connector will reduce Voltage to the equipment by three Volts (1:3 ratio)
    5, There is an impact, but it is too low to measure=============

    Which of the following is a characteristic of a resistor?
    1, Resists the flow of electrons
    2, Can be added to a signal cable to reduce the input signal voltage to an amplifier
    3, Can reduce the amount of power to a speaker
    4, Converts electrical energy to heat
    5, All of the above are correct=============

    An Electrolytic capacitor is known for its excellent sound quality and is used for the higher crossover frequencies.
    1, True
    2, False==============

    How do you determine the total resistance of a circuit?
    1, Add up all of the resistances===============
    2, Multiply all of the resistances
    3, Add the two highest resistances and divide by the lowest resistance
    4, divide the voltage into the current
    5, multiply the voltage by the current

    What does a passive crossover for a basic two-way system consist of?
    1, Two passive filters
    2, One passive filter and one active filter
    3, One capacitor for the tweeter and one inductor for the woofer
    4, One bandpass filter
    5, One passive filter and one relay===============

    According to Ohm's Law, if you want to calculate current you would:
    1, Take the square root of the resistance times the voltage
    2, Divide the resistance into the voltage
    3, Multiply the resistance and voltage
    4, Divide the voltage into the resistance================= ALTHOUGH I THOUGHT IT WAS RESISTANCE INTO VOLTAGE. (I = V/R)

    What is the general rule regarding power and signal leads?
    1, Always run power and signal leads next to each other
    2, Depending on the installation, it is acceptable to cross the battery lead=======
    3, Run the wiring parallel to the car's factory wiring for ease of routing
    4, Depending on the installation, it is acceptable to cross the battery lead=======
    5, All of the above answers are correct

    Ground loops are the most frequent cause of noise problems in car audio installations.
    1, True===========
    2, False

    When should you use crimp connectors in installations?
    1, Always
    2, For the power lead
    3, For speaker connections
    4, Never====================

    How do you test for alternator whine?
    1, Turn the audio system on, turn the volume all the way down, then rev the engine========
    2, Turn the audio system off, the rev the engine
    3, Use a noise sniffer
    4, Use a digital multimeter
    5, All of the above techniques can be used to test for alternator whine

    Which of the following is the best diagnostic tool for use on a brand new car with a computer-controlled ignition, computerized climate control system and a trip computer?
    1, VOM (volt-ohm meter)================
    2, Test light
    3, DMM (digital multimeter)
    4, Hydrometer

    If you want to check the amperage draw of a component or security system brain, and the suspect component is not blowing the supplied fuse, you should set your amperage scale on your VOM to a range above the fuse rating of the component.
    1, True
    2, False================

    Which type of fire extinguisher is best suited for a mobile electronics shop?
    1, Type A
    2, Type B
    3, Type C========
    4, Halon
    5, All of the above are acceptable

    What is the first step involved in troubleshooting for system noise problems?
    1, Eliminating the source of the problem=========
    2, Identifying the type of noise
    3, Determining the various makes and models of products in the system
    4, Finding out when the problem was first noticed

    At what frequency is the human ear most sensitive?
    1, 25 Hz to 35 Hz
    2, 100 Hz to 250 Hz
    3, 1,000 Hz to 2,000 Hz=============== (i was taught 2000-5000)
    4, 15,000 Hz to 20,000 Hz

    What is sympathetic vibration?
    1, Noise made by processors
    2, The natural resonance of an object===============
    3, Distortion
    4, Ignition noise

    An audio signal is an electrical representation of what?
    1, Sound wave===============
    2, Octave
    3, Potentiometer
    4, Inductance

    Destructive interference refers to two speakers whose sound waves are working against each other and are out of phase by:
    1, 45 degrees
    2, 90 degrees
    3, 180 degrees=================
    4, 270 degrees
    5, 360 degrees

    A magnetic Reed Switch, also called a magnetic proximity switch:
    1, Uses magnetic force to cause a set of contacts to connect
    2, Uses Kinetic energy to open and close a set of contacts============
    3, Has input for multiple switch triggers
    4, Can replace the use of a relay

    The most common device to interrupt a vehicle's starter is a:
    1, Electronic switching capacitor
    2, Heavy duty diode
    3, Electromagnetic switch==============
    4, Pulse timer

    An impact sensor the best device to detect breaking glass during a break-in attempt?
    1, True==============
    2, False

    A pulse or unversal timer can be used to:
    1, Remove unwanted EMI from your security system
    2, Add a pulsed output for alternating flashing parking lights
    3, Convert a momentary duration pause into a longer or shorter duration signal=====
    4, Reverse the pulse from negative to positive for door triggers

    A glass-mount antenna will transmit and receive best:
    1, When mounted over two defogger grids
    2, When it is mounted over an FM antenna grid=============
    3, When mounted between or above the defogger grids
    4, When placed at a 45 degree angle to the ground plane

    Extending the length of the RG58 coax cable supplied by the manufacturer can result in as much as 3dB of signal loss.
    1, True=================
    2, False

    The small holes on the side of the hands-free microphone are commonly used for...
    1, Decoration
    2, Noise canceling==============
    3, The mounting clip
    4, Water drainage

    Painting a cellular antenna mast with car paint typically causes up to 1 dB of signal loss.
    1, True
    2, False==============

    Which of the following materials will not attenuate the signal from a GPS Antenna:
    1, Metallic window tint
    2, Line defrosters
    3, Electrically heated windshields
    4, Factory pigment tinted glass==============

    The best choice of mounting position for the GPS antenna is:
    1, Under the trunk lid
    2, Under the hood
    3, Under the headliner
    4, On the rear deck or dash=============
    5, On the center console

    The length of antenna cable on a GPS receiver is:
    1, Unmatched
    2, Preset
    3, Random
    4, Uncorrelated=============

    A true VSS signal will vary in proportion with:
    1, Engine temperature
    2, Engine RPM
    3, Ignition voltage
    4, Battery voltage
    5, Vehicle speed============

    When testing a digital VSS with a DMM set to a minimum 30VDC range, the DMM display should:
    1, Fluctuate between 5 to12 volts with tire rotation==========
    2, Starts at 12 volts and rises as tire rotation increases
    3, Change between 0 and 5 to12 with the engine running
    4, Increase from 0 volts as the engine RPM increases
     
  10. Julie

    Julie moderator- for now anyway

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    LMAO, trunk no offence mate but I don't how things are run where u work but I know that a hell of a lot of installers around here wouldn't know the answers to those questions. In my experience, and the experience of a lot of other people I know car audio installers are not qualified, they are just the younger bros mate, or cousin of some other dude that works in the shop who has dropped outta school.

    Now I am sure that where you work things would be different and you obviously know your stuff, but there is a lot of guys out there that don't. I have respect for those who are qualified and do a good job but the others well I won't say what I think of them. Curious though, being in the industry you would know the answer to my question, must companies only employ and allow qualified people to work on customers cars?
     
  11. vlv8vic

    vlv8vic <---Brad Quaid = internet stalker

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    after doing that i think i better go check that my gps antenna wires are the right lenth.... oh hang on they were made by some other prick and i just stuck it there.
    i figure most of this stuff is to do with design and what we need to do as amature installers is match a to b and make sure c doesnt touch a and b or else the fuse in d will blow and may require an extra $1 on a new fuse because c touched a when it shouldnt have.
    sorry if i seem c.unty i just think yes people have different jobs, professions, knowledge. i could install a stereo with good results. you could probably teach a grade 3 class. thats where we are the same. the difference in doing is knowing the reason behind doing.
    it sucks that people say anyone could do it. its the same with teaching. everyone thinks they could teach someone something but it doesnt make them a teacher. take it with a grain of salt mate ive learned to.
     
  12. Doctor Bob

    Doctor Bob Grandpa

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    here goes

    4
    1
    5
    2
    4
    2
    5
    2
    4
    3
    2
    5
    1
    4
    1
    3
    1
    1
    2

    Rob
     
  13. Tasmaniak

    Tasmaniak Not a valid input....

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    Julie, what I forgot to mention was that the MECP qualification is an American and British certificate that I own and I dearly think should be instated here in Oz.

    There is NO actual qualification here in Australia. When you consider the costs of cars and automotive acessories and the fact that we can be playing god with peoples lives. I think there SHOULD be qualifications. Too many threads about JB and Strathfield prove this....

    Heh, if all goes well, I will unleash the Dreaded MASTER Class installer exam onto you all and see how many could pass that. You need a 90% pass.

    I think vlv8vic said ot best. He can do it. But, he has no clue what he is doing. Now, no offence John, but would you pay him $48p/hour to install $5000 worth of equipment?
     
  14. vlv8vic

    vlv8vic <---Brad Quaid = internet stalker

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    haha i wouldnt pay ME that to install!!!!! not offended at all mate. surprised you arent offended i came accross as a bit of grump on this one.

    Would anyone let Ray teach their grade 3? lol imagine what they would do to the fkn car when they got home from school....
     
  15. Julie

    Julie moderator- for now anyway

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    Agree with you 100% about the fact that there should be compulsory qualifications here. When you think about it you are playing with electricity. Electricians have to do an apprenticeship and tafe, forcing them to have decent knowledge and practical skills to safely do their job. Don't see why it should be any different for car audio installers, maybe an apprenticeship is a bit much to ask as they only have to deal with cars but a knowledge and practical exam wouldn't go astray. Whether or not it ever happens is another story altogether, the government would probably see these qualifications as meaning a few more thousand people lining up at centrelink.
     
  16. michaelw

    michaelw Donating Member

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    Rattler, your concerns are noted.

    In that vein, don't get me started on who can call themselves an engineer these days...
     
  17. Tasmaniak

    Tasmaniak Not a valid input....

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    Heh, I used to have a hard enough time trying not to strangle my trainees!!!

    "Why the **** did you just use two gauge cable for two hundred watt amplifier?! What do you expect me to tell the customer about the sudden increase of a hundred bucks?!"

    OR, my all time classic.

    "That Barina just came back in, her phone doesn't work at all since you installed the carkit and she keeps blowing the dashlight fuse."
    "Oh?"
    "Oh? You kill an expensive phone and all you can say is oh?"
    "Yeah"
    "Did you test it?"
    "yes"
    "You couldn't have"
    "But I did"
    "No, you didn't"
    "Yes, I did"
    "Not properly"
    "So, you followed the checklist I gave you?"
    "No"
    "Why not?"
    "I forgot"
    "You forgot.....remember my number one rule I gave you when you first started?"
    "Which one?"
    "You bend you spend."
    "****"
    "Yeah"
    "How much?"
    "I'll let you know, now **** off out of my sight. I'm not in the mood for morons"

    I think I was a little harsh with him then, but after 12 months I thought he would've known to check his earth wires....
     
    MYVESSV8 likes this.
  18. Tasmaniak

    Tasmaniak Not a valid input....

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    It's a scary thought isn't it Michael? I know I can work fumble my way around a circuit board but there is no way I would ever call myself an expert let alone an engineer...
     
  19. michaelw

    michaelw Donating Member

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    Yep. But as I failed your test, it goes to show that just because I am an engineer does not mean I should be trusted with a 2 grand audio install. Besides I listen to the ABC news radio most days.

    And as it is Engineering week next week, I shall put in a plug. Engineers get to do fun things. Check out this link (sorry it is a bit big)
    http://www.ansto.gov.au/ansto/bragg/workshops/w3report.pdf Page 4 I am the good looking blur second on the right at the back ;)

    Mike
     
  20. dephilile

    dephilile New Member

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    Dude. I dunno how some people get their engineering degree hey. I’m currently studying mechatronics at UQ and for our team project last semester two of the people in my group had never seen a bread board before. I thought they were joking when they said “what’s that?”. I don’t know how they passed first year. Or even just recently, in one of our practicals we had to set up various op-amp circuits and measure the characteristics of an op-amp chip. Almost half the class didn’t know how to set up a +15/-15 voltage source to power the chip. I’m embarrassed that the university actually let the pass “intro to electrical engineering”.
     

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