Exam 7: Charging Systemscharging System Testing and Service

When the engine is running, the ____ spins the rotor inside the stator windings.

Technician A says a shorted diode may be indicated by a whining noise. Technician B says a squealing noise may indicate a loose belt. Who is correct?

Because field current is required to produce a magnetic field, it is necessary to determine if current is flowing to the ____.

The hybrid AC generator design consists of a rotor assembly with both permanent magnet and wire wound sections.

Technician A says when testing the voltage output, if the charging voltage is too high, the cause could be an open field wire from the regulator. Technician B says a loose or glazed drive belt could be the cause of too high charging voltage. Who is correct?

Excessive output can be caused by a faulty battery.

All charging systems use the principle of electromagnetic ____ to generate electrical power.

Rotor speed is a factor in the maximum available output of the AC generator.

What may be the cause of too low charging voltage?

A scan tool can be used to help diagnose charging system problems on most modern vehicles.

It is the vehicle's ____ that generates the current to operate the electrical accessories while the engine is running.

What component carries the magnetic field current in an AC generator?

Technician A says a diode can be tested with a DMM that has a diode test setting. Technician B says when testing a diode with a DMM that has a diode test setting the meter should read approximately 0.6V in one direction and 0 when the leads are reversed. Who is correct?

Technician A says a scan tool may be used to full field some alternators. Technician B says a field current draw test indicates if there is current available to the field windings. Who is correct?

What is the name of the component that creates the rotating magnetic field of the AC generator?

What does an increase in regulator field resistance mean?

Where is the output of an AC generator created?

AC generator output decreases as field current increases.

Voltage regulation is controlled by the PCM on many vehicles today.

The actual AC generator output should be at least 10% to 20% greater than the ____.