AC GENERATOR - Practice Mode

1) Which type of alternator is used for high speed operation?

Salient pole alternator Smooth cylindrical pure alternator Projected pole alternator Impulse turbo alternator

Correct Answer: Smooth cylindrical pure alternator

2) How the alternators are rated?

KVA KW KVAR KWH

Correct Answer: KVA

3) What is the condition for voltage in parallel operation of 3-phase alternator?

Must be same Must be different Must be low Must be high

Correct Answer: Must be same

4) Which is the condition for parallel operation of 3-phase alternator?

Frequency must be same Voltage must be different Sequence must be different Polarity must be different

Correct Answer: Frequency must be same

5) Why parallel operation of alternators is necessary?

To get more voltage To share more loads To improve efficiency To maintain constant frequency

Correct Answer: To share more loads

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