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Synchronous Motors

Synchronous Motors
The pull out torque of a synchronous motor is generally ______ times its full-load torque.

1.25 to 3.5
5 to 10
0.5
6 to 9

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Synchronous Motors
The speed regulation of a synchronous motor is always

1%
Positive
Zero
0.5%

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

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

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Synchronous Motors
Hunting in a synchronous motor cannot be due to

windage friction
variable load
variable supply voltage
variable frequency

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

None of the listed here
VAR
MVAR
kVAR

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Synchronous Motors
An over excited synchronous motor is used for

Variable speed loads
Power factor corrections
Fluctuating loads
Low torque loads

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