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SYNCHRONOUS MOTORS

Synchronous Motors
A synchronous machine with low value short circuit ratio has

Good voltage regulation
High stability limit
Good speed regulation
Lower stability limit

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Synchronous Motors
The back emf in the stator of a synchronous motor depends on

None of the listed here
Rotor speed
Rotor excitation
Flux density

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Synchronous Motors
The construction of a synchronous motor ressembles

A series motor
An induction motor
An alternator
A rotary converter

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Synchronous Motors
A synchronous motor develop maximum power when load angle is

90°
45°
60°
120°

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Synchronous Motors
A synchronous motor can operate at

Lagging power factor only
Unity power factor only
Lagging, leading and unity power factors
Leading power factor

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