

MCQOPTIONS
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1. |
A 3-phase, 4-pole, 50 Hz induction motor is uses DOL method of starting. It is later replaced by auto transformer method of starting with a tapping ratio of ‘x’, then the starting current reduces by? |
A. | x |
B. | x^2 |
C. | 1/x |
D. | no change in the starting current |
Answer» C. 1/x | |