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Synchronous Motors
A synchronous motor will always stop when
Load in motor varies
Supply voltage fluctuates
Excitation winding gets disconnected
Supply voltage frequency changes
Load in motor varies
Supply voltage fluctuates
Excitation winding gets disconnected
Supply voltage frequency changes
Answer
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Related Question
Synchronous Motors
The ratio of starting torque to running torque in a synchronous motor is
One
Two
Infinity
Zero
One
Two
Infinity
Zero
Answer
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Synchronous Motors
The construction of a synchronous motor resembles
a series motor
an alternator
a rotary converter
an induction motor
a series motor
an alternator
a rotary converter
an induction motor
Answer
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Synchronous Motors
A synchronous motor with large air gap has
A higher synchronizing power which makes the machine less sensitive to load variations
All of the listed here
A small value of inherent regulation
A higher value of stability limit
A higher synchronizing power which makes the machine less sensitive to load variations
All of the listed here
A small value of inherent regulation
A higher value of stability limit
Answer
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Synchronous Motors
Slip rings in a synchronous motor carry
No current
Direct current
Alternating current
All of the listed here
No current
Direct current
Alternating current
All of the listed here
Answer
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Synchronous Motors
The efficiency of a properly designed synchronous motor will usually fall in range
85 to 95%
75 to 80%
99 to 99.5%
60 to 70%
85 to 95%
75 to 80%
99 to 99.5%
60 to 70%
Answer
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