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Synchronous Motors

Synchronous Motors
The capacity of a synchronous capacitor is generally in the range of

None of the listed here
kVAR
VAR
MVAR

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Synchronous Motors
The construction of a synchronous motor ressembles

An induction motor
An alternator
A rotary converter
A series motor

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

kW rating
kVAR rating
kVA rating
None of the listed here

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Synchronous Motors
Damper winding in a synchronous motor________

Increases hunting of the motor
Reduces windage losses
Improve pf of the motor
Serves to start the motor

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Synchronous Motors
In a synchronous motor it the back e.m.f. generated in the armature at noload is approximately equal to the applied voltage, then

the motor is said to be fully loaded
the excitation is said to be hundred per cent
the torque generated is maximum
the excitation is said to be zero per cent

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Synchronous Motors
Small synchronous motors are started by _______

None of the listed here
Variable frequency source
Damper winding
Pony motor

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