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Alternators

Alternators
Majority of the alternators are

Single phase
Three phase
Two phase
None of the listed here

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Alternators
The airgap in an alternator is ________ in an induction motor.

Much shorter than
None of the listed here
Much longer than
About same as

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

Medium speed
Low speed
None of the listed here
High speed

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Alternators
In air-crafts, alternators have operating frequency of

50 Hz
60 Hz
400 Hz
500 Hz

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

None of the listed here
6
3
50

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Alternators
The slip rings emplyod in a 3-phase alternator in hydro station are insulated for

Extra high tension voltage
Full armature voltage
Low voltage
Very low voltage

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