DC Motors – Page 8 – HI MCQ!

Four point starter in the D.C. motor is used?

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D.C. generators are installed near the load centres to reduce?

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Hopkinson’s test on D.C. machines is conducted at?

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In Ward Leonard method of speed control of a D.C. motor, change in speed of motor is obtained by the?

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Which of the following losses are significantly reduced by laminating the core of a D.C. generator?

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What will happen if the back e.m.f. of a D.C. motor vanishes suddenly?

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Which loss in a D.C. generator does not vary with load as well as flux density?

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Usually wide and sensitive speed control is desired in case of?

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As there is no back e.m.f. at the instant of starting a D.C. motor, in order to prevent a heavy current from flowing though the armature circuit?

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Which of the following load normally, needs starting torque more than. The rated torque?

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