31. The losses occurring in a D.C. generator are given below. Which loss is likely to have highest proportion at rated load of the generator?
32. Which of the following load normally needs starting torque more than the rated torque?
33. Which of the following motors is most suitable for signaling devices and many kinds of timers?
34. D.C. shunt motors are used for driving
35. The condition for maximum power in case of D.C. motor is
36. Which of the following law/rule can he used to determine the direction of rotation of D.C. motor?
37. The speed of a D.C. motor can be varied by varying
38. Following motor is used where high starting torque and wide speed range control is required.
39. The current drawn by the armature of D.C. motor is directly proportional to
40. The speed of a D.C. shunt motor more than its full-load speed can be obtained by
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