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Synchronous Motors

Synchronous Motors
The construction of a synchronous motor resembles

a series motor
an induction motor
a rotary converter
an alternator

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Synchronous Motors
The duration of sudden short circuit test on synchronous motor is usually about

One minute
None of the listed here
One second
One hour

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Synchronous Motors
A synchronous motor runs at speed ranging from ______

150 to 1800 rpm
1800 to 3600 rpm
None of the listed here
3600 to 6000 rpm

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Synchronous Motors
A synchronous motor working at leading power factor can be used as

Phase advancer
Noise generator
Voltage booster
Mechanical synchronizer

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Synchronous Motors
Dust and dirt accumulation on motor winding will result in

Increased core losses
Rise in winding temperature
Shorting of coils
Eddy current flow

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Synchronous Motors
A rotary converter can also be run as a

Dc compound generator
Dc series generator
Synchronous motor
Dc shunt generator

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