Measurement and Instrumentation Which of the following devices should be used for accurate measurement of low D.C. voltage? Small range thermocouple voltmeter Small range moving coil voltmeter None of these C. potentiometer Small range thermocouple voltmeter Small range moving coil voltmeter None of these C. potentiometer ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Which devices used to measure the temperature of an object ? Thermometers Odometer Galvanometer Poteintiometer Thermometers Odometer Galvanometer Poteintiometer ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The coil of a moving coil meter has 100 turns, is 40 mm long and 30 mm wide. The control torque is 240×10-6 N-m on full scale. If magnetic flux density is 1Wb/m2 range of meter is 3 mA. 4 mA. 1 mA. 2 mA. 3 mA. 4 mA. 1 mA. 2 mA. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A voltmeter has 100 scale divisions and can measure up to 100 V. Each division can be read to ½ division. The resolution of the voltmeter is 1.5 V 0.5 V 1 V 2 V 1.5 V 0.5 V 1 V 2 V ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A rectifier type instrument is connected to 100VDC and is operated in the DC measuring module reads 50V 90V 100V 111V 50V 90V 100V 111V ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The errors introduced by an instrument fall in which category ? Random errors Systematic errors Gross errors Environmental errors Random errors Systematic errors Gross errors Environmental errors ANSWER DOWNLOAD EXAMIANS APP
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