Measurement and Instrumentation What is the approximate input impedance of a CRO? 10 MΩ 100 MΩ 0 1 MΩ 10 MΩ 100 MΩ 0 1 MΩ ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Which of the following devices should be used for accurate measurement of low D.C. voltage? Small range thermocouple voltmeter Small range moving coil voltmeter C. potentiometer None of these Small range thermocouple voltmeter Small range moving coil voltmeter C. potentiometer None of these 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% 1.5% 1.2% 0.5% 1% 1.5% 1.2% ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Most sensitive galvanometer is Duddle galvanometer Spot ballastic galvanometer Elastic galvanometer Vibration galvanometer Duddle galvanometer Spot ballastic galvanometer Elastic galvanometer Vibration galvanometer ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The two pressure coils of a single phase power factor meter have The same dimensions and the same number of turns The same dimension but different number of turns None of these The same number of turns but different dimensions The same dimensions and the same number of turns The same dimension but different number of turns None of these The same number of turns but different dimensions ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Which of the following meters has a linear scale? Moving coil meter Thermocouple meter Moving iron meter Hot wore meter Moving coil meter Thermocouple meter Moving iron meter Hot wore meter ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS