Measurement and Instrumentation The meter constant of an energy meter is 1500 rev/kWh, the disc makes 3000 revolution in a given time. The energy consumed is 3 kWh 1 kWh 4 kWh 2 kWh 3 kWh 1 kWh 4 kWh 2 kWh ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation To measure an A. C. voltage by using an A.C. potentiometer, it is desirable that the supply for the potentiometer in taken Any of the above From a source which is not the same as the unknown voltage From the same source as the unknown voltage From a battery Any of the above From a source which is not the same as the unknown voltage From the same source as the unknown voltage From a battery ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The resistance of a circuit is found by measuring current flowing and the power fed into the circuit. If the limiting errors in the measurement of power and current are ± 1.5% and ± 1.0% respectively, the limiting error in the measurement of resistance ± 1% ± 1.5% ± 2.5% ± 3.5% ± 1% ± 1.5% ± 2.5% ± 3.5% ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation PMMC Instrument can be used for Both AC and DC AC work only None of the listed here DC work only Both AC and DC AC work only None of the listed here DC work only ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The total current I = I1 + I2 in a circuit is measured as I1 = 150 ± 1A , I2 = 250 ± 2A, where the limits of error are as standard deviations. I is measured as (400 ± 1.5) A (400 ± 2.24) A (400 ± 1) A (400 ± 3) A (400 ± 1.5) A (400 ± 2.24) A (400 ± 1) A (400 ± 3) A ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Kelvin’s double bridge is used to measure low resistance because there is no thermo electric emf. resistance variation due to temperature. it has high sensitivity. effect of contact and lead resistance is eliminated. there is no thermo electric emf. resistance variation due to temperature. it has high sensitivity. effect of contact and lead resistance is eliminated. ANSWER DOWNLOAD EXAMIANS APP
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