Question

When there is no load then mechanical efficiency is

Answer 1

mechanical effeciency is zero

Answer 2

Answer:

Heya.....here’s ur answer

Explanation:

The efficiency of any electric motor will be zero at no-load condition as there is no output while there is an input power at least to cover the rotational losses (iron losses plus mechanical losses) beside a small encountered copper loss. thus, at light loads the efficiency will be very small.

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