21. For constant torque drive which speed control method is preferred ?
22. For starting a D.C. motor a starter is required because
23. For the same H.P. rating and full load speed, following motor has poor starting torque
24. For which of the following applications a D.C. motor is preferred over an A.C. motor ?
25. For which types of D.C. motor, dynamic braking is generally used ?
26. Hopkinsons test on D.C. machines is conducted at
27. If a D.C. motor designed for 40°C ambient temperature is to be used for 50°C ambient temperature, then the motor
28. If a D.C. motor is connected across the A.C. supply it will
29. If a D.C. motor is to be selected for conveyors, which rriotor would be preferred ?
30. If a D.C. shunt motor is working at full load and if shunt field circuit suddenly opens
MCQ Multiple Choice Questions and Answers on DC Motors
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DC Motors Question and Answer
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