Measurement and Instrumentation A PMMC voltmeter is connected across a series combination of a DC voltage source V1 = 2 V and an AC voltage source V2 = 3sin4t, the voltmeters reads 2 V. (2 + √3/2)V. 0 V. 5 V. 2 V. (2 + √3/2)V. 0 V. 5 V. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The maximum percentage error in the sum of two voltage measurements when V1 = 100V ± 1% and V2 = 80V ± 5% is ± 4% ± 6% ± 3% ± 2.8% ± 4% ± 6% ± 3% ± 2.8% 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 ± 1% ± 2.4% ± 3.4% ± 1.4% ± 1% ± 2.4% ± 3.4% ± 1.4% ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A voltmeter using thermocouple measures Peak to peak value. Peak value. rms value. Average value. Peak to peak value. Peak value. rms value. Average value. 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. 94.6o. 175.4o. 4.6o. 85.4o. 94.6o. 175.4o. 4.6o. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The errors introduced by an instrument fall in which category ? Random errors Environmental errors Gross errors Systematic errors Random errors Environmental errors Gross errors Systematic errors ANSWER DOWNLOAD EXAMIANS APP
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