AC Electrics - Alternators: DGCA Technical General questions

Question 1

An alternator is:

Accepted Answer

An AC generator

Answer

A reversing input switch

Answer

A DC generator

Answer

A static inverter

Question 2

To prevent high circulating currents between paralleled alternators, the following conditions should be met:

Accepted Answer

Their voltage, frequency, phase and phase sequence must all be the same

Answer

Their voltage and frequency must be the same

Answer

Their frequencies must be identical and their phase sequence must be the same

Answer

Their inductive and capacitive reactances must match exactly

Question 3

The output of an AC generator is taken from:

Accepted Answer

The stator windings

Answer

The exciter windings

Answer

The field coils

Answer

The rotor coils

Question 4

The moving part of an alternator is:

Accepted Answer

The rotor

Answer

The megacycle

Answer

The stator

Answer

The frequency

Question 5

A frequency wild alternator must be:

Accepted Answer

Unparalleled

Answer

Paralleled

Answer

A rotating magnet type

Answer

Self-exciting

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