Maximum permissible voltage drop sustained while starting an electrical rotating machine

Q.  What is the maximum permissible voltage drop that can be sustained while starting an electrical rotating machine?
- Published on 28 Sep 15

a. 15 – 20 % of the rated voltage
b. 20 – 25 % of the rated voltage
c. 5 – 10 % of the rated voltage
d. 0 – 5 % of the rated voltage

ANSWER: 15 – 20 % of the rated voltage

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