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Synchronous Motors

Synchronous Motors
The size of a synchronous motor is determined by its _____

kVAR rating
kVA rating
None of the listed here
kW rating

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Synchronous Motors
A synchronous motor runs at speed ranging from ______

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

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Synchronous Motors
The construction of a synchronous motor ressembles

An alternator
A series motor
A rotary converter
An induction motor

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Synchronous Motors
A synchronous motor delivers reactive power when ______

None of the listed here
Over excited
Under excited
Normally excited

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Synchronous Motors
Which of the following motors is non self starting?

Dc series motor
Synchronous motor
Squirrel cage induction motor
Wound rotor induction motor

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Synchronous Motors
If the field circuit of an unloaded salientpole synchronous motor gets suddenly open-circuited, then

it runs at a slower speed
the motor stops
it continues to run at the same speed
it runs at a very high speed

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