MCQOPTIONS
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MCQOPTIONS
| 1. |
A 3 phase induction motor is controlled by voltage and frequency control such that the ratio V/f is constant. At 50 Hz, the starting torque is 100 N-m. At 25 Hz, the starting torque |
| A. | will be less than 100 N-m |
| B. | will be more than 100 N-m |
| C. | may be more or less than 100 N-m depending on motor parameters |
| D. | very small |
| Answer» C. may be more or less than 100 N-m depending on motor parameters | |