Automobile Alternator Quiz

What are the two main functions of the alternator?

• To start the engine and to power the headlights

• To charge the battery and to supply power to the vehicle's electrical systems

• To cool the engine and to charge the battery

• To supply power to the vehicle's electrical systems and to play the radio

When does the alternator function?

• Only when the headlights are on

• Only when the engine is running

• Only when the battery is fully charged

• Only when the vehicle is moving

What is the alternator pulley attached to?

• The engine block

• The crankshaft pulley via a drive belt

• The radiator

• The exhaust manifold

What happens as the engine turns?

• The alternator charges the battery

• The drive belt turns the alternator

• The alternator cools the engine

• The drive belt breaks

What does the alternator produce as it turns?

• Heat

• Noise

• Electricity

• Oil

What is the purpose of the largest terminal on an alternator?

• Grounding the 'no charge' warning lamp

• Sensing the charging voltage at the battery

• Power from the ignition switch to the regulator and field coils

• The output to the battery and electrical loads

What is the function of the rectifier in an alternator?

• It converts generated AC to DC.

• It induces AC voltage in the stator winding.

• It extracts warm air and keeps components cool.

• It retains the front casing of the alternator.

What does the rotating field winding do inside an alternator?

• It converts AC to DC and controls output voltage.

• It induces AC voltage in the stator winding.

• It extracts warm air and keeps components cool.

• It retains the front casing of the alternator.

What is the purpose of the fans in an alternator?

• They convert AC to DC and control output voltage.

• They induce AC voltage in the stator winding.

• They extract warm air and keep components cool.

• They retain the front casing of the alternator.

What makes the alternator pulley turn?

• Electricity from the battery

• The drive belt being turned by the crankshaft pulley

• The cooling fan

• Electricity from the rectifier and regulator