Alternator

Alternators work on this principle - voltage is induced in a wire as it passes through a __________

• Magnetic field

• Solenoid

• Resistor

• Wire

In the alternator, the which is in motion? (One answer)

• The wires into which voltage is induced

• The magnetic field which induces the voltage

• The voltage regulator

• The rectifier

The magnetic field is:

• A permanent magnet

• The field coil - an electromagnet

• The north and south pole pieces

• The wires in the stator

Where is the field coil located?

• In the rotor

• Coils make up the stator

• In the battery

• In the voltage regulator

What is the purpose of the brushes?

• To transmit current to the field coil while it rotates

• To receive induced voltage

• To transform AC voltage to DC voltage

• The brush up the voltage to 14.2V (charging voltage)

The stator typically contains __ set of wire windings

• 1

• 2

• 3

• 4

Stator windings could take two configurations. What are they? (Two answers)

• Wye

• Delta

• Rectifier

• Star

The rectifier...

• Converts AC voltage into DC voltage

• Converts DC voltage into AC voltage

• Is also known as the voltage regulator

• All of the above

The voltage regulator controls output voltage by:

• Controlling the amount of current flowing to the field coil

• Using a spring-loaded pressure relief valve

• Placing a resistor in-line with the output windings, absorbing some of the voltage

• Providing a path to ground for excessive output voltage

The alternator case is:

• A path to ground

• A path for power to flow through

• Part of the stator

• Part of the rotor