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Synchronous Motors

Synchronous Motors
The rotor copper losses, in a synchronous motor, are met by

armature input
motor input
supply lines
c. source

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Synchronous Motors
An important advantage of a synchronous motor over wound round induction motor is that

its speed is independent of supply frequency
its power factor may be varied at will
None of these
its speed may be controlled more easily

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Synchronous Motors
In a synchronous motor, the rotor copper loss are met by ______

Armature input
Motor input
Supply lines
Dc source

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Synchronous Motors
The direction of rotation of a synchronous motor can be reversed by reversing,

None of the listed here
Polarity of rotor poles
Supply phase sequence
Current to field winding

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Synchronous Motors
The construction of a synchronous motor ressembles

A rotary converter
An induction motor
A series motor
An alternator

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Synchronous Motors
A synchronous motor is a ______ motor.

None of the listed here
Singly fed
Variable speed
Variable pf

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