Measurement and Instrumentation The two pressure coils of a single phase power factor meter have The same dimension but different number of turns The same number of turns but different dimensions The same dimensions and the same number of turns None of these The same dimension but different number of turns The same number of turns but different dimensions The same dimensions and the same number of turns None of these ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Which of the following cannot be measured by multimeters? Frequency Current Resistance Voltage Frequency Current Resistance Voltage ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation If two meters X and Y require 40 mA and 50 mA respectively, to give full scale deflection, then Y is more sensitive. It would not be possible to assess the sensitivity on the basis of the given data. Both X and Y are equally sensitive. X is more sensitive. Y is more sensitive. It would not be possible to assess the sensitivity on the basis of the given data. Both X and Y are equally sensitive. X is more sensitive. 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% ± 6% ± 7% ± 5% ± 8% ± 6% ± 7% ± 5% ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation ______ instruments are most sensitive. Dynamometer Permanent magnet moving coil Hot wire Moving iron Dynamometer Permanent magnet moving coil Hot wire Moving iron ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The current ‘I’ through a resistance R is measures with the following uncertainties I = 4 A ± 0.5%, R = 100Ω±0.2%. If power is computed from these two measured quantities, the uncertainty in the power computed will be 0.5% 1.5% 1.2% 1% 0.5% 1.5% 1.2% 1% ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS