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Q. |
A 50Hz 20 poles 3 phase I.M. has a full load slip 1.33%. Its rotor impedance per phase on standstill is 0.02+j0.3ohms. Then the ratio of starting torque to the maximum torque is____. |
A. | 0.384 |
B. | 0.527 |
C. | 0.132 |
D. | 0.854 |
Answer» C. 0.132 |
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