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Electrician
Electrician Set-1
Alternators
11

Alternators MCQ - Electrician (Set-1) with Answers

11) The pitch factor is defined as the ratio of the e.m.fs. of the :

full-pitch winding to short-pitch winding

short-pitch coil to full-pitch coil

full-pitch winding to concentrated winding

distributed winding to full-pitch winding

Answer is:

short-pitch coil to full-pitch coil

Alternators MCQ - Electrician (Set-1) with Answers

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Related Alternators MCQ - Electrician (Set-1) with Answers

12) The rotor of a salient pole alternator has 12 poles. The number of cycles of e.m.f. in one revolution will be :\n(Hint: Two-pole alternator will generate one cycle of e.m.f. in one rotation)

2

4

6

8

Answer is:

6

13) In large sized alternators, dampers are used to :

reduce current fluctuations

reduce voltage fluctuations

increase stability

increase output e.m.f.

Answer is:

increase stability

14) The number of electrical degrees which passes through in one revolution of a 6-pole alternator is :

2160

1080

720

360

Answer is:

1080

15) The waveform of the e.m.f. generated by an alternator should be :

pulse shaped wave

square wave

sine wave

triangular wave

Answer is:

sine wave

Alternators MCQ - Electrician (Set-1) with Answers

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