Measurement and Instrumentation A high frequency AC signal is applied to a PMMC instrument. The RMS value of the AC signal is 2V, the reading of the instrument is Zero. √2V. 2V. 2√2V. Zero. √2V. 2V. 2√2V. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Kelvin’s double bridge is used to measure low resistance because it has high sensitivity. resistance variation due to temperature. effect of contact and lead resistance is eliminated. there is no thermo electric emf. it has high sensitivity. resistance variation due to temperature. effect of contact and lead resistance is eliminated. there is no thermo electric emf. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A Manganin swap resistance is connected in series with a moving coil ammeter consisting of a milli ammeter and a suitable shunt in order to Reduce the size of the meter. Obtaine large deflecting torque. Minimize the effect of stray magnetic fields. Minimize the effect of temperature variation. Reduce the size of the meter. Obtaine large deflecting torque. Minimize the effect of stray magnetic fields. Minimize the effect of temperature variation. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A current of is measured with a thermocouple, 5 A full scale meter. What is the meter reading? 4.06 A. 2.03 A. 5 A. 6.09 A. 4.06 A. 2.03 A. 5 A. 6.09 A. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A 0 - 200 V voltmeter has a guaranteed accuracy of 1% of full scale reading. The voltage measured by this instrument is 50 V. What is the limiting error? 2% 5% 4% 3% 2% 5% 4% 3% ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A variable w is related to three other variables x, y and z as w = xy/z. The variables are measured with meters of accuracy ± 0.5% reading, ± 1% of full scale value and ± 1.5% reading. The actual readings of the three meters are 80, 20 and 50 with 100 being the full scale value for all three. The maximum uncertainty in the measurement of w will be ± 7% ± 6% ± 5% ± 8% ± 7% ± 6% ± 5% ± 8% ANSWER DOWNLOAD EXAMIANS APP
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