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Alternators

Alternators
In an alternator, for a coil having a span of 2/3 of pole pitch, the coil span factor will be

0.6
0.866
0.2
0.707

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Alternators
In an alternator the armature reaction is mainly influenced by

Speed of the alternator
The power factor of the load
Short circuit ratio
Total current drawn

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Alternators
Damper windings are used in alternators to

Achieve synchronism
Reduce windage loss
None of the listed here
Prevenent hunting

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Alternators
For the same rating, the size of low speed alternator is ______that of high speed alternator.

About the same as
Less than
More than
None of the listed here

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Alternators
The rating of an alternator is expressed in______

kW
kVAR
kVA
HP

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Alternators
The ac armature winding of an alternator is _______

Always star connected
Star-delta connected
Generally delta connected
None of the listed here

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MORE MCQ ON Alternators

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