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Single Phase Motors
If the centrifugal switch of a two-value capacitor motor using two capacitors fails to open then
motor will not carry the load
motor will not come up to speed
current drawn by the motor will be excessively high
electrolytic capacitor will, in all probability, suffer break down
motor will not carry the load
motor will not come up to speed
current drawn by the motor will be excessively high
electrolytic capacitor will, in all probability, suffer break down
Answer
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Related Question
Single Phase Motors
A capacitor-start single phase induction motor is switched on to supply with its capa-citor replaced by an inductor of equivalent reactance value. It will
not start at all
start and run slowly
start and then stop
start and run at rated speed
not start at all
start and run slowly
start and then stop
start and run at rated speed
Answer
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Single Phase Motors
In a capacitor start motor, the phase displacement between starting and running winding can be nearly
30°
10°
90°
60°
30°
10°
90°
60°
Answer
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Single Phase Motors
In case of a reluctance motor, when the load is increased so that it cannot maintain synchronous speed the motor will
Become unstable
Run as induction motor
Draw excessive armature current and may burn out
Fall out of synchronism and come to stand still
Become unstable
Run as induction motor
Draw excessive armature current and may burn out
Fall out of synchronism and come to stand still
Answer
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Single Phase Motors
A Reluctance motor
Need no dc excitation
Is self starting
Is constant speed motor
All of the listed here
Need no dc excitation
Is self starting
Is constant speed motor
All of the listed here
Answer
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Single Phase Motors
Electrical faults in a motor occur must commonly in its
Commutator
Control equipment
Brushes
Motor winding
Commutator
Control equipment
Brushes
Motor winding
Answer
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