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Synchronous Motors
Synchronous motors are generally used in application requiring _______
Variable speed
Sudden application of heavy loads
Infrequent starting
Frequent stopping
Variable speed
Sudden application of heavy loads
Infrequent starting
Frequent stopping
Answer
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Related Question
Synchronous Motors
The direction of rotation of a synchronous motor can be reversed by reversing,
Polarity of rotor poles
Supply phase sequence
None of the listed here
Current to field winding
Polarity of rotor poles
Supply phase sequence
None of the listed here
Current to field winding
Answer
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Synchronous Motors
If the field of a synchronous motor is underexcited, the power factor will be
leading
unity
lagging
zero
leading
unity
lagging
zero
Answer
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Synchronous Motors
If a synchronous motor is operating at a supply frequency of 50 cycles/second, then, rotor revolves at ______
None of the listed here
25 cycles/ second
100 cycles/second
50 cycles/second
None of the listed here
25 cycles/ second
100 cycles/second
50 cycles/second
Answer
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Synchronous Motors
Which of the following motors is non self starting?
Dc series motor
Wound rotor induction motor
Squirrel cage induction motor
Synchronous motor
Dc series motor
Wound rotor induction motor
Squirrel cage induction motor
Synchronous motor
Answer
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Synchronous Motors
The size of a synchronous motor is determined by its _____
kVA rating
None of the listed here
kW rating
kVAR rating
kVA rating
None of the listed here
kW rating
kVAR rating
Answer
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