When the applied voltage per phase is reduced to one-half, the starting torque of a ___

When the applied voltage per phase is reduced to one-half, the starting torque of a three-phase squirrel cage induction motor becomes

A. 1/2 of the initial value.
B. 1/4 of the initial value.
C. twice of the initial value,
D. 4 times of the initial value

Show Answer

Answer: B

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