Quiz on Residual Magnetism in Alternators

What is residual magnetism?

• A type of electricity

• A part of the alternator

• A magnetic field needed for voltage

• A kind of battery

What happens if residual magnetism is lost?

• The alternator cannot generate electricity

• The alternator becomes smaller

• The alternator generates more power

• The alternator works faster

What should you do if the alternator is not generating voltage?

• Determine the need for flashing

• Check the battery

• Change the alternator

• Increase the speed

What is a safety precaution before working on an alternator?

• Follow lockout/tagout procedures

• Connect to the load

• Increase the voltage

• Leave it connected

What is one method to restore residual magnetism?

• Using a fan

• Using a resistor

• Using a light bulb

• Using a permanent magnet

What should you connect to the exciter field terminals?

• AC power source

• DC power source

• Wind turbine

• Solar panel

What is important about the battery when boosting?

• It should be empty

• It must be a solar battery

• The polarity must be correct

• It must be old

How long should you apply DC power to re-magnetize the field?

• For a few seconds

• For a short time

• For a specified duration

• For a whole day

What can you use if a battery is not available?

• A permanent magnet

• A light bulb

• A switch

• A wire

What is the purpose of using an external DC source?

• To decrease the speed

• To make it less effective

• To make it more controlled

• To increase the size