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Single Phase Motors

Single Phase Motors
The capacitor start, capacitor run induction motor acts as a true 2-phase motor at _______

All loads
Full load
No load
Starting

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Single Phase Motors
Most of the fractional horsepower motors have either

soft and porous bearings
ball or roller bearings
hard and annealed bearings
plain or sleeve bearings

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Single Phase Motors
Which of the following is most economical method of starting a single phase induction motor?

Resistance start method
Inductance start method
Capacitor start method
Split phase method

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Single Phase Motors
Which motor will make least noise?

Capacitor motor
Universal motor
Hysteresis motor
Shaded pole motor

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Single Phase Motors
Reluctance motors are

Singly excited
None of the listed here
Either of the listed
Doubly excited

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

high efficiency
good power factor
minimum cost
high starting torque

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