Measurement and Instrumentation The smallest change in measured variable to which instrument will respond is resolution. accuracy. sensitivity. precision. resolution. accuracy. sensitivity. precision. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A rectifier type instrument is connected to 100VDC and is operated in the DC measuring module reads 90V 50V 100V 111V 90V 50V 100V 111V ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation One single phase wattmeter operating on 230V and 5A for 5 hours makes 1940 revolutions. Meter constant in revolutions is 400. What is the power factor of the land? 0.84 0.73 1 0.65 0.84 0.73 1 0.65 ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A variable w is related to three other variables x, y and z as w = xy/z. The variables are measured with meters of accuracy ± 0.5% reading, ± 1% of full scale value and ± 1.5% reading. The actual readings of the three meters are 80, 20 and 50 with 100 being the full scale value for all three. The maximum uncertainty in the measurement of w will be ± 8% ± 5% ± 6% ± 7% ± 8% ± 5% ± 6% ± 7% ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The resistance offered to the passage of an in-varying current by a column of mercury at the temperature of melting ice of mass 14.4521 gms of uniform cross-sectional area and length 106.3cm is One international ohm One ohm according to SI units One ohm according to working standards Standard ohm One international ohm One ohm according to SI units One ohm according to working standards Standard ohm ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation In DC potentiometer measurments, a second reading is often taken after reversing the polarities of the DC supply and the unknown voltage and the average of the two reading is taken. This is with a view of eliminate the effects of Ripples of the DC supply. Errorneous standardisation. Stray magnetic fields. Stray thermal emfs. Ripples of the DC supply. Errorneous standardisation. Stray magnetic fields. Stray thermal emfs. ANSWER DOWNLOAD EXAMIANS APP
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