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Synchronous Motors

Synchronous Motors
The ratio of starting torque to running torque in a synchronous motor is

Infinity
One
Zero
Two

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

90°
120°
45°
60°

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

kVAR
VAR
MVAR
None of the listed here

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Synchronous Motors
A synchronous motor working at leading power factor can be used as

Voltage booster
Mechanical synchronizer
Phase advancer
Noise generator

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Synchronous Motors
A 50 Hz synchronous motor runs at 200 rpm. The number of salient poles on the rotor are______

16
36
30
None of the listed here

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Synchronous Motors
When the synchronous motor runs at synchronous speed, the voltage induced in the damper winding is _____

None of the listed here
Zero
Maximum
minimum

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