Measurement and Instrumentation Potentiometer method of DC voltage measurement is more accurate than direct measurement using a voltmeter because It loads the circuit to maximum extent. It does not load the circuit at all. It uses centre zero galvanometer instead of voltmeter. It loads the circuit moderately. It loads the circuit to maximum extent. It does not load the circuit at all. It uses centre zero galvanometer instead of voltmeter. It loads the circuit moderately. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation One single phase wattmeter operating on 230V and 5A for 5 hours makes 1940 revolutions. Meter constant in revolutions is 400. What is the power factor of the land? 0.65 0.84 0.73 1 0.65 0.84 0.73 1 ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The range of a moving iron ac ammeter is extended by A shunt None of the listed here Changing number of turns of operating coil A multiplier A shunt None of the listed here Changing number of turns of operating coil A multiplier ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Which of the following devices should be used for accurate measurement of low D.C. voltage? C. potentiometer 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 ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation In eddy current damping, disc or former is made of a material that is a Conductor but magnetic Conductor but non magnetic Non conductor but magnetic Non conductor and non magnetic Conductor but magnetic Conductor but non magnetic Non conductor but magnetic Non conductor and non magnetic ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The calibration of a voltmeter can be carried out by using A potentiometer. A frequency meter. A function generator. An ammeter. A potentiometer. A frequency meter. A function generator. An ammeter. ANSWER DOWNLOAD EXAMIANS APP
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