Q. Which of the following loss is likely to have highest proportion at rated load of the DC generator?

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Q. Which of the following loss in a DC generator varies significantly with the load current?

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Q. Which of the following methods is likely to result in reduction of hysteresis loss in a DC generator?

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Q. Which of the following loss/losses in a DC generator is dissipated in the form of heat?

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Q. Which of the following losses are significantly reduced by laminating the core of a DC generator?

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Q. The total losses in a well-designed DC generator of 10 kW will be nearly equal to ________

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Q. The condition for maximum efficiency for a DC generator is __________

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

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Q. In a DC generator, the iron losses mainly take place in ____________

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Q. If DC generators are located near load centres, which losses can be minimised?

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Q. Nature of efficiency curve of DC machine is _________________

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Q. Why retardation test is carried on DC machine?

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Q. In the DC motor the iron losses occur in __________

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Q. Which of the following losses is not under constant losses?

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Q. Variable losses are proportional to ________

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Q. Swinburne’s test can be carried out on all DC motors.

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Q. Which of the following test will be suitable for testing two similar DC series motors of large capacity?

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Q. Which losses can be identified from Swinburne’s test?

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Q. While carrying out Swinburne’s test at rated armature voltage motor will run at ____________

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Q. In order to run motor on rated speed while carrying out Swinburne’s test we add ______________

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