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Alternators

Alternators
The field winding of an alternator is _____ excited.

DC
AC
None of the listed here
Both DC and AC

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

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

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Alternators
The synchronous reactance of an alternator is generally _______ armature resistance.

5 times greater than
10 times smaller than
5 times smaller than
10 to 100 times greater than

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Alternators
Majority of the alternators are

Single phase
None of the listed here
Two phase
Three phase

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Alternators
Zero power factor method for alternator is generally used to determine

Synchronous impedance of alternator
None of the listed here
Efficiency of alternator
Voltage regulation of the alternator

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Alternators
Voltage regulation of an alternator is larger than that of a dc generator because of _______

Complex effects of armature reaction
Large leakage reactance
None of the listed here
Large armature resistance

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