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DC generators are normally designed for maximum efficiency at or near ____________

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DC generators are normally designed for maximum efficiency at or near ____________

(a) Full-load

(b) Minimum load

(c) Rated voltage

(d) At all loads

The question was asked in an online quiz.

The question is from Efficiency of DC Machine- 2 topic in chapter Efficiency and Testing of DC Machines

1 Answer

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Best answer
Right answer is (c) Rated voltage

The explanation is: The efficiency of a machine is different at different values of power output. All electrical machines are generally designed to give maximum efficiency at or near the rated output of the machine. Thus, maximum efficiency occurs at rated voltage.

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