41. In a D.C. machine, the value of peripheral speed should not, normally, exceed
42. A moving-coil permanent-magnet instrument can be used as _____ by using a low resistance shunt.
43. Volt box is a component to
44. For measuring current at high frequency we should use
45. In an AC co-ordinate potentiometer, the currents in the phase and quadrature potentiometer are adjusted to be
46. The adjustment of position of shading bands, in an energy meter is done to provide
47. A multirangq instrument has
48. Which of the following are integrating instruments ?
49. The use of _____ instruments is merely confined within laboratories as standardizing instruments.
50. In a low power factor wattmeter the pressure coil is connected
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