Measurement and Instrumentation The internal resistance of an ammeter should be Very small Infinity Medium High Very small Infinity Medium High ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The range of a moving iron ac ammeter is extended by A shunt A multiplier Changing number of turns of operating coil None of the listed here A shunt A multiplier Changing number of turns of operating coil None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation When a potentiometer is used for measurement of voltage of an unknown source, the power consumed in the circuit of the unknown source under null condition is ideally zero. very high. small. high. ideally zero. very high. small. high. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Which amplifier in used in an electronic amplifier? Differential amplifier. Power amplifier. Wideband amplifier. Butter amplifer. Differential amplifier. Power amplifier. Wideband amplifier. Butter amplifer. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A resistance is measured by the voltmeter-ammeter method employing dc excitation and a voltmeter of very high resistance connected directly across the unknown resistance. If the voltmeter and ammeter reading are subject to maximum possible errors of ± 2.4 % and ± 1.0 % respectively, then the magnitude of the maximum possible percentage error in the value of resistance deduced from the measurement is nearly ± 3.4% ± 1% ± 1.4% ± 2.4% ± 3.4% ± 1% ± 1.4% ± 2.4% ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The current coil of a wattmeter is connected to the CT of R-phase. The potential coil is connected across Y and B phases. The wattmeter measures Active power in R phase Power proportional to 3 phase power if the load is balanced Reactive power of R phase Active power of Y phase Active power in R phase Power proportional to 3 phase power if the load is balanced Reactive power of R phase Active power of Y phase ANSWER DOWNLOAD EXAMIANS APP
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