a) Moving coil voltmeter b) Electrostatic voltmeter c) Moving iron voltmeter d) Hot wire instrument Ans: (b)
a) Operating torque is to braking torque b) Operating torque is half of the braking torque c) Breaking torque is zero d) Braking torque is more than operating torque Ans: (a)
a) Voltmeter b) Wattmeter c) Energymeter d) Ammeter Ans: (c)
a) An ampere-hour meter b) True watt-hour meter c) Wattmeter d) VAR meter Ans: (b)
a) To reduce the weight of the disc for easy rotation b) To eliminate creeping on no load c) For proper ventilation d) To increase the deflection torque Ans: (b)
a) Murray loop test b) Varley loop test c) Fisher loop test Ans: ()
a) True b) False Ans: (a)
a) A simple thermometer pyrometer b) Electrical resistance pyrometer c) Thermo-electric pyrometer d) None of the above Ans: (c)
a) True b) False Ans: (a)
a) Copper-constantan b) Silver-constantan c) Iron-constantan Ans: ()