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1. |
A 3-phase, 6-pole, 50 Hz induction motor has a full load speed of 960 rpm with its slip rings short circuited. The motor drives the constant load. If the speed is reduced to 800 rpm, then ohmic losses will be? |
A. | 5 times that at full load |
B. | 0.2 times as that at full load |
C. | 15 times as that at full load |
D. | same as that at full load |
Answer» B. 0.2 times as that at full load | |