Alternator Multiple Choice Questions and Answers

1. In an alternator one of the advantages of distributing the winding is to

   A.Improve voltage waveform

   B.Reduce noise

   C.Same on copper

   D.Reduce harmonics

   D.None of the above

2. In large generators protection provided against external faults is

   A.Inter-turn fault protection

   B.Sensitive earth fault protection

   C.Biased differential protection

   D.All of the above

3. Due to which of the following reasons, for aircraft alternators high frequency is used

   A.To reduce the bulk

   B.To compensate for high speeds

   C.To compensate for high altitudes

   D.To free the systems from external distribuance

   D.None of the above

4. The permissible duration for which a generator of rated frequency 50Hz can at 46 Hz is

   A.One cycle

   B.One second

   C.One minute

   D.Zero

   E.None of the above

5. In an alternator the voltage of field system is usually

   A.More than 1000 V

   B.Between 400 V and 600 V

   C.Less than 200 V

   D.None of the above

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