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Alternators

Alternators
An alternator supplying power to a load with a leading power factor always has ______ voltage regulation.

Positive
Unity
Negative
Zero

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Alternators
In an alternator one of the advantages of distribution the winding is to

Save on copper
Improve voltage wavefrom
None of the listed here
Reduce noise

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Alternators
The voltage regulation of an alternator for a pf of 0.8 lagging is _______at unity pf.

Greater than
Smaller than
The same as
None of the listed here

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

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

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Alternators
In a cylindrical rotor how much portion of the rotor is wound?

Two third
One third
Full
Half

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Alternators
The speed of an alternator is changed from 3000 rpm to 1500 rpm. The generated emf/phase will become

Half
Unchanged
One fourth
Double

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