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Synchronous Motors
The speed of a synchronous motor can be changed by varying _______
None of the listed here
Field excitation
Mechanical load
Supply frequency
None of the listed here
Field excitation
Mechanical load
Supply frequency
Answer
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Related Question
Synchronous Motors
Small synchronous motors are started by _______
Variable frequency source
Pony motor
None of the listed here
Damper winding
Variable frequency source
Pony motor
None of the listed here
Damper winding
Answer
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Synchronous Motors
A three phase synchronous motor will have
No slip rings
One slip rings
Three slip rings
Two slip rings
No slip rings
One slip rings
Three slip rings
Two slip rings
Answer
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Synchronous Motors
An under excited synchronous motor behaves as_______
None of the listed here
A capacitor
A resistor
An inductor
None of the listed here
A capacitor
A resistor
An inductor
Answer
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Synchronous Motors
The speed regulation of a synchronous motor is always
1%
Positive
0.5%
Zero
1%
Positive
0.5%
Zero
Answer
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Synchronous Motors
Slip rings in a synchronous motor carry
No current
Alternating current
Direct current
All of the listed here
No current
Alternating current
Direct current
All of the listed here
Answer
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