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Alternators

Alternators
When load on an alternator is increased, the terminal voltage increases if the load pf is ______

Unity
Lagging
Zero
Leading

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

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

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Alternators
The distribution of load between two alternators operating in parallel can be changed by changing ______

None of the listed here
Driving torques of prime movers
Field excitation of alternators
Phase sequence

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Alternators
The frequency of emf generated in an 8-pole alternator running at 900 rpm is ______

None of the listed here
60 Hz
50 Hz
120 Hz

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Alternators
The dark and bright lamp method is used for

Transfer of load
Balancing of load
Synchronizing
Phase sequence

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Alternators
The full load efficiency of an alternator _______with increases in speed.

Increases
Remains unchanged
Decreases
None of the listed here

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