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Synchronous Motors

Synchronous Motors
A synchronous capacitor is an over excited motor running at ________

Full load
None of the listed here
Half full load
No load

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Synchronous Motors
When the synchronous motor is pulled out of synchronism, the stator current _______

Remains unchanged
Is increased too much
Becomes zero
Is decreased too much

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Synchronous Motors
Leading power factor synchronous motors cost ______ the unity pf motors.

Less than
More than
None of the listed here
About the same as

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Synchronous Motors
A synchronous motor can develop synchronous torque

only at synchronous speed
below or above synchronous speed
while over-excited
when under loaded

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Synchronous Motors
A synchronous motor can be started by

Dc compound motor
Pony motor
All of the listed here
Provinding damper winding

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Synchronous Motors
The construction of a synchronous motor resembles

a rotary converter
an alternator
an induction motor
a series motor

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