Measurement and Instrumentation Kelvin’s double bridge is used to measure low resistance because it has high sensitivity. effect of contact and lead resistance is eliminated. resistance variation due to temperature. there is no thermo electric emf. it has high sensitivity. effect of contact and lead resistance is eliminated. resistance variation due to temperature. there is no thermo electric emf. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation If the instrument is to have a wide range, the instrument should have Square-law scale Linear scale Exponential scale Logarithmic scale Square-law scale Linear scale Exponential scale Logarithmic scale 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 250 V. 248 V. 260 V. 252 V. 250 V. 248 V. 260 V. 252 V. 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 ? ± 0.045 ± 0.056 ± 0.054 ± 0.065 ± 0.045 ± 0.056 ± 0.054 ± 0.065 ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A power factor meter has One current circuit and one pressure circuit None of the listed here One current circuit and two pressure circuits Two current circuit and one pressure circuit One current circuit and one pressure circuit None of the listed here One current circuit and two pressure circuits Two current circuit and one pressure circuit ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The pointer of an indicating instrument should be Very light Either light or heavy None of the listed here Very heavy Very light Either light or heavy None of the listed here Very heavy ANSWER DOWNLOAD EXAMIANS APP
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