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Synchronous Motors

Synchronous Motors
For reciprocating compressor, the synchronous motor is designed to have pull in torque of about ______ times the full load torque.

2
5
6
0.5

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Synchronous Motors
The percentage slip in case of a synchronous motor is

0.005
1
zero
0.01

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Synchronous Motors
The net armature voltage of a synchronous motor is equal to the

vector sum of Eb and V
vector difference of Eh and V
arithmetic sum of Eb and V
arithmetic difference of Eb and V

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

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

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Synchronous Motors
The maximum speed variation in a 3 phase synchronous motor is

Zero
2 percent
4 percent
10 percent

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Synchronous Motors
Which of the following motors is non self starting?

Wound rotor induction motor
Dc series motor
Synchronous motor
Squirrel cage induction motor

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