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Single Phase Motors

Single Phase Motors
Electrical faults in a motor occur must commonly in its

Motor winding
Control equipment
Brushes
Commutator

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Single Phase Motors
When a universal motor is operated on no load, its speed is limited by

Weight of the armature
Windage and friction
Supply voltage frequency
Armature reaction

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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

start and run at rated speed
start and run slowly
not start at all
start and then stop

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Single Phase Motors
What could be the size of a universal motor for use in vaccum cleaners?

3/4 HP
1 HP
1/4 HP
2 HP

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Single Phase Motors
At starting, the line current of a capacitor start induction motor is ______ the normal full load current.

4 to 5 times
7 to 8 times
8 to 10 times
Equal to

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Single Phase Motors
Which motor has unsymmetrical rotor?

Shaded pole motor
Universal motor
Split phase motor
Reluctance motor

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MORE MCQ ON Single Phase Motors

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