After the starting winding is disconnected from the circuit the motor continues to run only on the-a)Squirrel cage windingb)Running windingc)Magnetic windingd)Compensating windingCorrect answer is option 'B'. Can you explain this answer?

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After the starting winding is disconnected from the circuit the motor continues to run only on the-

a)
Squirrel cage winding
b)
Running winding
c)
Magnetic winding
d)
Compensating winding

Correct answer is option 'B'. Can you explain this answer?

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After the starting winding is disconnected from the circuit the motor...

A single-phase motor cannot create a rotating magnetic field. It will just standstill and oscillate. To see this disconnect the start winding and you will see the motor will not startup. If you twist the motor shaft with your fingers it will run in whichever direction you twist. To self-start a single-phase motor one must create a rotating magnetic field on the stator. Two windings are used and the difference in impedance creates a phase delay in the magnetic fields produced by each winding allowing the motor to start.

Hence, the correct option is (B)

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After the starting winding is disconnected from the circuit the motor continues to run only on the-a)Squirrel cage windingb)Running windingc)Magnetic windingd)Compensating windingCorrect answer is option 'B'. Can you explain this answer?

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