Which of the following application requires high starting torque?
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Electrical Engineering · all questionsD.C. Motors
D.C. Motors
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If the field of a D.C. shunt motor gets opened while motor is running
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Which of the following steps is likely to result in reduction of hysteresis loss in a D.C. generator?
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Which of the following loss in a D.C. generator is dissipated in the form of heat?
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The hysteresis loss in a D.C. machine least depends on
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Hopkinson's test on D.C. machines is conducted at
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Regenerative method of braking is based on that
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In the D.C. motor the iron losses occur in
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In which of the following applications D.C. series motor is invariably tried?
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In D.C. machines fractional pitch winding is used
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Which D.C. motor has got maximum self loading property?
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In D.C. machines the residual magnetism is of the order of
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In a D.C. generator, the iron losses mainly take place in
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For constant torque drive which speed control method is preferred?
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By looking at which part of the motor, it can be easily confirmed that a particular motor is D.C. motor?
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One D.C. motor drives another D.C. motor. The second D.C. motor when excited and driven
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Where D.C. motor of H.P. 12 or more requires frequent starting, stopping, reversing and speed control
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Ward-Leonard control is basically a
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Which of the following motors is most suitable for signalling devices and many kinds of timers ?
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The mechanical power developed by a shunt motor will be maximum when the ratio of back e.m.f. to applied voltage is
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