Measurement and Instrumentation
Assertion (A) : It is always desirable to take the reading of an indicating instrument very close to the full scale reading. Reason (R) : Accuracy of an indicating instrument is maximum at the full scale deflection and error increases as reading comes closer to the beginning of the scale.

 A is true but R is false
 Both A and R are true and R is the correct explanation of A
 A is false bur R is true
 Both A and R are true but R is NOT the correct explanation of A

ANSWER DOWNLOAD EXAMIANS APP

Measurement and Instrumentation
In AC circuits, the connection of measuring instruments cause loading effect errors which may effect

 both of above.
 magnitude, phase and waveform of the quantity being measured.
 only the magnitude of the quantity being measured.
 only phase of the quantity being measured.

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

 ± 2.4%
 ± 1.4%
 ± 3.4%
 ± 1%

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Measurement and Instrumentation