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Alternators

Alternators
Copper losses of an alternator can be measured by

Rectifier
Dc motor
Transformer
None of the listed here

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Alternators
If the number of poles of an alternator is increased, the generated emf

None of the listed here
Decreases
Remains the same
Increases

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Alternators
The stator of an alternator rarely uses _____slots.

None of the listed here
Wide open type
Semi-closed type
Closed type

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Alternators
The speed at which a 6-pole alternator should be driven to generate 50 cycles per second is _______

1500 rpm
1000 rpm
500 rpm
None of the listed here

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Alternators
Majority of the alternators in the use have _____

Revolving ac armature winding
Revolving field type construction
None of the listed here
Stationary field type construction

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Alternators
In aircrafts, alternators have operating frequency of

50 Hz
400 Hz
60 Hz
800 Hz

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