Electrical Engineering Quiz

What does Ohm’s law state?

• Current through a conductor is directly proportional to the voltage applied to that conductor and inversely proportional to the resistance of the conductor.

• Resistance through a conductor is directly proportional to the voltage applied to that conductor and inversely proportional to the current of the conductor.

• Current through a conductor is directly proportional to the resistance of that conductor and inversely proportional to the voltage applied of the conductor.

Residual voltage is the result of magnetism in the?

• Armature

• Pole shoes

• Field windings

If a generator is malfunctioning, its voltage can be reduced to residual by?

• Actuating the master solenoid.

• Turning the generator master switch to the OFF position.

• Actuating the rheostat.

The most effective method of charging a NiCD battery is?

• Constant Voltage

• Constant Current

• Constant Resistance

What is the reason for flashing the field in a generator?

• Increase the capacity of the generator.

• Remove excessive build-up of dust from brushes.

• To restore correct polarity and/or residual magnetism to the field poles.

What is a spring loaded, off center, relay called?

• Spring relay.

• Remote relay.

• contactor

How does a voltage regulator change the voltage output of a generator?

• By changing the current in the generator output circuit.

• By changing the resistance of the generator field circuit.

• By changing the resistance in the generator output circuit.

• By changing the voltage in the generator field circuit.

What is the advantage of a starter-generator?

• To save weight by combining two devices, starter and generator, into one device.

• To save cost by combining two devices, starter and generator, into one device.

• There is no such device.

• To increase the efficiency of the generator.

What are the two effects of electron flow through a conductor?

• A magnetic field and heat.

• A magnetic field and fluctuating DC.

• An AC field and heat.

• A magnetic field and light.

How can the electrolyte in a lead acid battery be protected from freezing?

• Remove the battery and keep it under constant charge.

• Place the aircraft in a hangar.

• Ensure the battery is fully charged.

• Add antifreeze to the electrolyte.