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Alternators

Alternators
Copper losses of an alternator can be measured by

Dc motor
Rectifier
Transformer
None of the listed here

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Alternators
The salient pole construction for field structure of an alternator is generally used for ______ machine.

2-pole
None of the listed here
8-pole
4-pole

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Alternators
An under excited alternator supplies _______

No reactive power
Leading VAR
None of the listed here
Lagging VAR

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

50
3
None of the listed here
6

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Alternators
The field winding of an alternator is _____ excited.

None of the listed here
DC
AC
Both DC and AC

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Alternators
Excessive windage loss and noise occur with

Cylindrical rotors
None of the listed here
Salient pole rotors
Either cylindrical or salient

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