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Alternators

Alternators
The power factor of an alternator is determined by its

Speed
Excitation
Primemover
Load

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Alternators
Excessive windage loss and noise occur with

Cylindrical rotors
Salient pole rotors
Either cylindrical or salient
None of the listed here

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Alternators
An alternator coupled to which primemover will usually have the highest rotating speed?

Francis turbine
Steam engine
Steam turbine
Reciprocating diesel engine

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Alternators
When two alternators are running in exact synchronism, the synchronising power will be

None of the listed here
Zero
Sum of the output of two
Unity

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Alternators
Armature winding of an alternator are generally

Open winding
Partly open and partly closed windings
Closed winding
None of the listed here

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

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

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