Measurement and Instrumentation Which of the following devices should be used for accurate measurement of low D.C. voltage? Small range moving coil voltmeter None of these Small range thermocouple voltmeter C. potentiometer Small range moving coil voltmeter None of these Small range thermocouple voltmeter C. potentiometer ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A spring-controlled moving iron voltmeter draws a current of 1 mA for full scale value of 100V. If it draws a current of 0.5 mA, the meter reading is 200 V. 100 V. 25 V. 50 V. 200 V. 100 V. 25 V. 50 V. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A moving coil of a meter has 100 turns, and a length and depth of 10 mm and 20 mm respectively. It is postioned in a uniform radial flux density of 200 mT. The coil carries a current of 50 mA. The torque on the coil is 2 Nm. 1 Nm. 200 Nm. 100 Nm. 2 Nm. 1 Nm. 200 Nm. 100 Nm. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The material of the shunt should have _______ temperature co-efficient of resistance. Negative Negligible Positive None of the listed here Negative Negligible Positive None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A PMMC instrument can be used as flux meter By making control springs of large moment of inertia By using a low resistance shunt By using a high series resistance By eliminating the control springs By making control springs of large moment of inertia By using a low resistance shunt By using a high series resistance By eliminating the control springs ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The absolute measurement of resistance is done by Bridge Method Rayleigh method Lorenz method Ohm’s law method Bridge Method Rayleigh method Lorenz method Ohm’s law method ANSWER DOWNLOAD EXAMIANS APP
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