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Alternators

Alternators
A two pole alternator is running at 1500 rpm. Its angular velocity is ______

157 rad/s
192 rad/s
118 rad/s
212 rad/s

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Alternators
Alternators, now a days, are designed to have poor regulation because

We employ automatic voltage regulators
It limits the value of short circuit current
None of the listed here
It reduces the construction cost

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Alternators
For producing an emf of given frequency, an alternator will run at greatest speed for _____ poles.

8
4
12
2

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Alternators
The stator of an alternator is wound for _______on the rotor.

The same number of poles as
More number of poles than
None of the listed here
Less number of poles than

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Alternators
Damper windings are used in alternators to

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

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Alternators
Majority of the alternators are

Single phase
None of the listed here
Three phase
Two phase

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