Measurement and Instrumentation The coil of a moving iron instrument has a resistance of 500 ohm and inductance of 1 H. It reads 250 V when a 250 V DC is applied. It series resistance is 2000 ohms its reading when fed by 250 V, 50 Hz AC will be 250 V. 248 V. 252 V. 260 V. 250 V. 248 V. 252 V. 260 V. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A moving coil permanent magnet instrument can be used as ______ by using a low resistance shunt. Voltmeter Flux meter Ballastic galvanometer Ammeter Voltmeter Flux meter Ballastic galvanometer Ammeter ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The calibration of a voltmeter can be carried out by using A function generator. A potentiometer. A frequency meter. An ammeter. A function generator. A potentiometer. A frequency meter. An ammeter. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The use of __________________ instruments is merely confined within laboratories as standardizing instrument. integrating. indicating. absolute. recording. integrating. indicating. absolute. recording. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Kelvin’s double bridge is used to measure low resistance because there is no thermo electric emf. it has high sensitivity. resistance variation due to temperature. effect of contact and lead resistance is eliminated. there is no thermo electric emf. it has high sensitivity. resistance variation due to temperature. effect of contact and lead resistance is eliminated. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A wattmeter reads 30.34 W. The absolute error in the measurement is - 2.22 W. What is the true value of power? None of these 32.56 W . 28.12 W. 25.45 W. None of these 32.56 W . 28.12 W. 25.45 W. ANSWER DOWNLOAD EXAMIANS APP
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