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If the field of a 100 amp, pulse width modulated AC generator [PCM controlled] is fed a 30% duty cycle, how much current will be produced at the generator output terminal?


A) 0 amps
B) 30 amps
C) 70 amps
D) 100 amps

E) C) and D)
F) A) and B)

Correct Answer

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Before adjusting drive-belt tension, Technician A checks for proper pulley alignment. Technician B looks up the specified belt tension in the vehicle's service manual. Who is correct?


A) A only
B) B only
C) both A and B
D) neither A nor B

E) A) and D)
F) B) and D)

Correct Answer

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A voltage drop over _____ volt(s) indicates high resistance in either the circuit or ground wiring of the charging system.


A) 0.1
B) 0.2
C) 0.5
D) 1.0

E) B) and C)
F) A) and B)

Correct Answer

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"A one-way check valve for electric current" is a good description of a ____________________.

Correct Answer

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Most electronic voltage regulators use a ____________________ diode that blocks current flow until a specific voltage is obtained.

Correct Answer

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Bypassing the regulator is known as ____________________ the generator.

Correct Answer

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What is the purpose of the fail-safe circuit contained with many voltage regulators?

Correct Answer

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To prevent simple electrical p...

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Describe how to test a rotor for a short to ground.

Correct Answer

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Connect an ohmmeter to a slip ...

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A PCM-controlled AC generator controls charging system voltage by shunting its excess output.

A) True
B) False

Correct Answer

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A diode trio provides rectified current to the ______.


A) field coil
B) stator coil
C) battery
D) ignition switch

E) B) and D)
F) None of the above

Correct Answer

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Hybrid vehicles are being discussed. Technician A says some hybrid vehicles use a motor/generator that is connected to the crankshaft by a drive belt. Technician B says the motor/generator on a hybrid vehicle is located at the flywheel. Who is correct?


A) A only
B) B only
C) both A and B
D) neither A nor B

E) A) and D)
F) A) and B)

Correct Answer

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A bad diode can cause an abnormal whirring noise in the AC generator.

A) True
B) False

Correct Answer

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What factors determine whether a faulty AC generator should be replaced or rebuilt?

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The time and cost re...

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Recommended engine rpm during a voltage output test is usually around ____________________ rpm.

Correct Answer

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The current output in an AC generator must be limited by a resistor to prevent excess current from damaging the battery and electrical accessories.

A) True
B) False

Correct Answer

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