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Alternators

Alternators
Which harmonic will be totally eliminate in an alternator by using a fractional pitch of 4/5 ?

Fifth
Third
Ninth
Seventh

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Alternators
The non salient field construction is used for _______ alternator.

None of the listed here
Medium speed
Low speed
High speed

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Alternators
The number of cycles generated in a 6-pole alternators in one revolution is _______

50
6
None of the listed here
3

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Alternators
Modern 3-phase alternator of a central power station will have generated voltage of

400 V
11 kV
230 V
132 kV

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Alternators
When the speed of an alternator is reduced by half, the generated emf will become

Four times
Twice
Half
One-fourth

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Alternators
The power factor of an alternator is determined by its

Speed
Excitation
Load
Primemover

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