Measurement and Instrumentation For measuring an AC voltage by an AC potentiometer it is desirable that the supply for the potentiometer is taken from Any of above. A source other than the source of unknown voltage. The same source as the unknown voltage. A battery. Any of above. A source other than the source of unknown voltage. The same source as the unknown voltage. A battery. 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? Period and frequency measurement modes respectively. Frequency and period measurment modes, respectively. Period measurment modes only. Frequency measurment modes only. Period and frequency measurement modes respectively. Frequency and period measurment modes, respectively. Period measurment modes only. Frequency measurment modes only. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation An ammeter of range 0-25 A has a guaranteed accuracy of 1% of full-scale reading. The current measured by the ammeter is 5 A. The limiting error in the reading is 6% 3% 4% 5% 6% 3% 4% 5% ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation For handling greater currents induction watt-meters are used in conjunction with Either of the above Potential transformers Current transformers Power transformers Either of the above Potential transformers Current transformers Power transformers ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A resistance is measured by the voltmeter-ammeter method employing dc excitation and a voltmeter of very high resistance connected directly across the unknown resistance. If the voltmeter and ammeter reading are subject to maximum possible errors of ± 2.4 % and ± 1.0 % respectively, then the magnitude of the maximum possible percentage error in the value of resistance deduced from the measurement is nearly ± 3.4% ± 2.4% ± 1.4% ± 1% ± 3.4% ± 2.4% ± 1.4% ± 1% ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The thermocouple instruments do not have Absence of frequency error High degree of measuring accuracy High sensitivity Independence of ambient temperature Absence of frequency error High degree of measuring accuracy High sensitivity Independence of ambient temperature ANSWER DOWNLOAD EXAMIANS APP
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