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Single Phase Motors

Single Phase Motors
The full load efficiency of a shaded pole motor is about _______

30 to 35%
5 to 10%
60 to 70%
70 to 80%

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Single Phase Motors
The capacitor used in capacitor start motor is always a _______ capacitor.

Mica
Electrolyte
Paper
Ceramic

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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

Run as induction motor
Fall out of synchronism and come to stand still
Become unstable
Draw excessive armature current and may burn out

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Single Phase Motors
A motor gets overheated due to

All of the listed here
Dry bearings
Overloads
Worn bearings

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Single Phase Motors
The repulsion start induction run motor is used because of

high starting torque
minimum cost
good power factor
high efficiency

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

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

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MORE MCQ ON Single Phase Motors

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