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The number of electrical degrees ‘passed through’ in one revolution of a 6-pole synchronous alternator is


1. 360 degree
2. 720 degree
3. 1080 degree
4. 2160 degree

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Best answer
Correct Answer - Option 3 : 1080 degree

Concept:

The mechanical degrees in one revolution is 360°.

The electrical degrees is given as 

\({\theta _e} = \frac{P}{2}{\theta _m}\).

Where,

P is number poles

θm = mechanical degrees

θe = electrical degrees

Calculation:

Given

P = 6

θm = 360o

\({\theta _e} = \frac{P}{2}{\theta _m}\)

\({\theta _e} = \frac{6}{2} \times 360^\circ\)

θe = 1080 degree

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