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Which starting method is the worst method in Induction motor?

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in Electric Drives by (99.8k points)
Which starting method is the worst method in Induction motor?

(a) Direct online starting

(b) Autotransformer starting

(c) Reactance starting

(d) Star-Delta starting

I got this question at a job interview.

Enquiry is from Motors Rating and Heating in portion Rating and Heating of Motors of Electric Drives

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Correct answer is (c) Reactance starting

The explanation: The Reactance starting method is the worst method in an Induction motor. It uses the concept of the potential divider. The losses are very high in case of Reactance starting method.

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