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ALTERNATORS

Alternators
The salient pole construction for field structure of an alternator is generally used for ______ machine.

2-pole
8-pole
4-pole
None of the listed here

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Alternators
What is the largest size of a alternator being manufactured in india?

500 MW
110 MW
250MW
210 MW

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

Steam turbine
Francis turbine
Reciprocating diesel engine
Steam engine

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Alternators
Hydrogen is used in large alternators mainly to

Reduce distortion of waveform
Reduce eddy current losses
Cool the machine
Strengthen the magnetic field

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Alternators
Excessive windage loss and noise occur with

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

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