31. Operating torques in analogue instruments are
32. The principle on which vector voltmeter is based is
33. Which of the following is the major consideration to evolve a good design ?
34. The stator of phase shifting transformer for use in conjunction with an A.C. potentiometer usually has a
35. Which of the following problem arises in D.C. motors which are fed from thyristor bridge circuits ?
36. The cylindrical windings using circular conductors are used for current rating of
37. The forced oil and air circulation method is usual one for transformers of capacities
38. In an energy meter braking torque is produced to
39. In a portable instrument, the controlling torque is provided by
40. In a meggar controlling torque is provided by
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