Measurement and Instrumentation The power factor of a single phase load can be calculated if the instruments available are One voltmeter and one ammeter One voltmeter, one ammeter and one wattmeter Any of the listed here One ammeter, one voltmeter and one energy meter One voltmeter and one ammeter One voltmeter, one ammeter and one wattmeter Any of the listed here One ammeter, one voltmeter and one energy meter ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Which of the following instruments can be used to measure AC current only? Moving iron ammeter Moving iron voltmeter Permanent Magnet Type ammeter Induction type ammeter Moving iron ammeter Moving iron voltmeter Permanent Magnet Type ammeter Induction type ammeter ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Basically potential meter is a device for Measuring a voltage Measuring a current Comparing two currents Comparing two voltages Measuring a voltage Measuring a current Comparing two currents Comparing two voltages 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 ? ± 0.065 ± 0.045 ± 0.054 ± 0.056 ± 0.065 ± 0.045 ± 0.054 ± 0.056 ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The thermocouple instruments do not have Absence of frequency error High sensitivity High degree of measuring accuracy Independence of ambient temperature Absence of frequency error High sensitivity High degree of measuring accuracy Independence of ambient temperature ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A 50 Hz bar primary CT has a secondary with 500 turns. The secondary supplies 5 A current into a purely resistive burden of 1Ω. The magnetizing ampere-turn is 200. The phase angle between the primary and secondary current is 85.4o. 175.4o. 94.6o. 4.6o. 85.4o. 175.4o. 94.6o. 4.6o. ANSWER DOWNLOAD EXAMIANS APP
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