Measurement and Instrumentation When a potentiometer is used for measurement of voltage of an unknown source, the power consumed in the circuit of the unknown source under null condition is high. small. ideally zero. very high. high. small. ideally zero. very high. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Standardization of potentiometer is done in order that, they become accurate. precise. accurate and precise. accurate and direct reading. accurate. precise. accurate and precise. accurate and direct reading. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The meter constant of a single phase 240 V induction watthour meter is 400 revolutions per KWh. The speed of the meter disc for a current of 10 Amperes of 0.8 p.f lagging will be 18.2 rpm. 21.1 rpm. 16.02 rpm. 12.8 rpm. 18.2 rpm. 21.1 rpm. 16.02 rpm. 12.8 rpm. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The resistance can be measured most accurately by Megger Voltmeter-ammeter method Bridge method Multimeter Megger Voltmeter-ammeter method Bridge method Multimeter ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The measurment of very low and very high frequencies is invariably done using a frequency counter in which one of the following? Frequency measurment modes only. Frequency and period measurment modes, respectively. Period measurment modes only. Period and frequency measurement modes respectively. Frequency measurment modes only. Frequency and period measurment modes, respectively. Period measurment modes only. Period and frequency measurement modes respectively. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A metal strain gauge has a gauge factor of two. Its nominal resistance is 120 ohms. If it undergoes a strain of 10-5, the value of change of resistance in response to the strain is 0.0012 Ohm. 120 Ohm. 240 Ohm. 0.0024 Ohm. 0.0012 Ohm. 120 Ohm. 240 Ohm. 0.0024 Ohm. ANSWER DOWNLOAD EXAMIANS APP
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