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For a 3-phase, 4-pole, 50 Hz synchronous motor the frequency, pole number and the load torque are all halved. The motor speed will be | |
A. | 375 rpm. [Wrong Answer] |
B. | 75 rpm. [Wrong Answer] |
C. | 1,500 rpm. [Correct Answer] |
D. | 3,000 rpm. [Wrong Answer] |