12e Elec Power

Which of the following is NOT a benefit of a single wire electrical system?

• Uses less power

• Weight Saving

• Reduced Interference

A freewheeling diode is installed in parallel with the solenoid coil. It is used to eliminate sparks when:

• the master switch is opened

• the master switch is closed

The problem with NiCd batteries?

• Flammable Vapour

• Thermal Runaway

Helicopter batteries with no positive locking device connector should:

• be torqued to at least 30 inch pounds

• have loctite applied to the connector

• be lockwired with 26AWG safety wire

What kind of servicing is permitted on lead acid batteries?

• replace dead cells

• check and adjust electrolyte

• repair corroded terminals

Electrolyte spills on skin:

• Flush with vinegar

• Flush with Bicarb Soda

• Flush with water

When removing a helicopter battery, disconnect _______ lead first.

• positive

• negative

If residual magnetism in a DC generator is lost, the process the get it back is called:

• Electrifying the coils

• Magnetising the rotor

• Flashing the field

A starter generator has separate field windings (one for the starter motor and one for the generator)

• True

• False

Advantage of starter generators

• runs at all RPMs

• saves weight