What is the range of size of the motor (kW) for efficiency nearly equals to 90%?(a) 15-150(b) 0-2(c) 3-15(d) 150-250This question was addressed to me by my college director while I was bunking the class.The query is from Motors Rating and Heating in division Rating and Heating of Motors of Electric Drives

What is the range of size of the motor (kW) for efficiency nearly equa

1.	What is the range of size of the motor (kW) for efficiency nearly equals to 90%?(a) 15-150(b) 0-2(c) 3-15(d) 150-250This question was addressed to me by my college director while I was bunking the class.The query is from Motors Rating and Heating in division Rating and Heating of Motors of Electric Drives
Answer» Right choice is (a) 15-150 For EXPLANATION I WOULD say: As the size of the motor INCREASES its SPEED decreases. The range of size of the motor (kW) for efficiency nearly equals to 90 % is 15-150. The efficiency increases as the size increases.

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