41. The form factor in AC is the ratio of
42. The error of an instrument is normally given as a percentage of
43. The repeat accuracy of an instrument can be judged from its
44. The resistance offered to the passage of an in-varying current by a column of mercury at the temperature of melting ice of mass 14.4521 gms of uniform cross-sectional area and length 106.3cm is
45. In a gravity controlled instrument, the deflection angle is proportional
46. The problem of Electrostatic coupling in a transformer is acute at
47. Which meter is suitable for the measurement of 10mV at 50MHz?
48. Which of the following devices should be used for accurate measurement of low D.C. voltage?
49. An instrument to be used for measurement and control should preferably have
50. Electrostatic instruments are normally used for
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