Measurement and Instrumentation The EMF of Weston standard cell is measured using Digital Volt meter Moving-coil meter Moving- iron meter Potentiometer Digital Volt meter Moving-coil meter Moving- iron meter Potentiometer ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A set of independent current measurements taken by four observers was recorded as : 117.02 mA, 117.11 mA, 117.08 mA and 117.03 mA. What is the range of error ? ± 0.056 ± 0.065 ± 0.054 ± 0.045 ± 0.056 ± 0.065 ± 0.054 ± 0.045 ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The resistance offered to the passage of an in-varying current by a column of mercury at the temperature of melting ice of mass 14.4521 gms of uniform cross-sectional area and length 106.3cm is One ohm according to working standards Standard ohm One international ohm One ohm according to SI units One ohm according to working standards Standard ohm One international ohm One ohm according to SI units 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? 1 0.73 0.84 0.65 1 0.73 0.84 0.65 ANSWER DOWNLOAD EXAMIANS APP
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 260 V. 248 V. 252 V. 250 V. 260 V. 248 V. 252 V. 250 V. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A multirange instrument has Variable turns of coil Multirange meters inside the measurement system Multicoil arrangement Multiple shunt or series resistance inside the meter Variable turns of coil Multirange meters inside the measurement system Multicoil arrangement Multiple shunt or series resistance inside the meter ANSWER DOWNLOAD EXAMIANS APP
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