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Single Phase Motors

Single Phase Motors
In a capacitor start motor, the phase displacement between starting and running winding can be nearly

60°
10°
90°
30°

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Single Phase Motors
A 4 pole, 50 Hz single phase induction motor has a slip of 5% . The speed of the motor will be

1425 rpm
1500 rpm
1200 rpm
None of the listed here

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Single Phase Motors
Most of the single phase induction motor are _____ machines.

8-pole
2-pole
6-pole
4-pole

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

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

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Single Phase Motors
Which of the following motors is inherently self starting?

Reluctance motor
Shaded pole motor
None of the listed here
Split motor

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Single Phase Motors
If starting winding of a single-phase induction motor is left in the circuit, it will

spark at light loads
draw excessive current and overheat
run faster
run slower

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