DC Electrics - Aircraft Electrical Power Systems: DGCA Technical General questions

Question 1

In an electrical circuit the reverse current cut-out relay will open:

Accepted Answer

When battery voltage exceeds generator voltage

Answer

When circuit voltage is less than generator voltage

Answer

When the main output CB is reset

Answer

When the batteries are flat

Question 2

A generator cut-out is provided:

Accepted Answer

To prevent discharge of the battery through the generator

Answer

To prevent the battery over heating

Answer

To prevent the battery from being overcharged

Answer

To allow the generator to be isolated in a crash

Question 3

A generator cut-out will open when:

Accepted Answer

Generator voltage falls below battery voltage

Answer

Circuit loads equal the battery voltage

Answer

The air temperature reaches 45°C

Answer

Circuit loads equal the generator voltage

Question 4

A generator cut-out is fitted to prevent:

Accepted Answer

The battery discharging through the generator windings

Answer

The generator overcharging the battery

Answer

Fire in the event of overloading the system

Answer

Out of phasing

Question 5

In the event of the cut-out points sticking in the closed position, the most probable results when the engine stopped would be:

Accepted Answer

A burnt out generator

Answer

Gain of engine power

Answer

Loss of residual magnetism

Answer

No apparent reaction

34 more questions in this chapter, free with an account