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In a comparative study of the torque-slip characteristic of a balanced polyphase induction motor and that of a single phase induction motor, it is found that for zero slip | |
A. | the torque for the former is zero and has a non-zero negative value for the latter. [Correct Answer] |
B. | the torque has a non-zero positive value on the former and has a non-zero negative value on the latter. [Wrong Answer] |
C. | the torque is zero on both of the characteristics. [Wrong Answer] |
D. | the torque has non-zero positive value on both of the characteristics. [Wrong Answer] |