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 1.2% 1% 0.5% 1.5% 1.2% 1% 0.5% 1.5% ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Which one of the following meters has maximum loading effect on the circuit under measurement ? 1000 Ω/volt 100 Ω/volt 10 MΩ/volt 1 MΩ/volt 1000 Ω/volt 100 Ω/volt 10 MΩ/volt 1 MΩ/volt 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% ± 1.4% ± 3.4% ± 2.4% ± 1% ± 1.4% ± 3.4% ± 2.4% ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation What is the approximate input impedance of a CRO? 0 10 MΩ 100 MΩ 1 MΩ 0 10 MΩ 100 MΩ 1 MΩ ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Which instrument has identical calibration for ac as well as dc values? Moving coil type Induction type Hot wire type Moving iron type Moving coil type Induction type Hot wire type Moving iron type ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation In a single phase energy meter, braking torque is provided by None of the listed here Permanent magnet Air friction Fluid friction None of the listed here Permanent magnet Air friction Fluid friction ANSWER DOWNLOAD EXAMIANS APP
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