Measurement and Instrumentation To measure 5 volts, if one selects a 0-100 volt range voltmeter which is accurate with in ± 1%, then the error in this measurement may be up to ± 20% ± 2.5% ± 1.5% ± 7.5 % ± 20% ± 2.5% ± 1.5% ± 7.5 % ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The smallest change in measured variable to which instrument will respond is sensitivity. resolution. accuracy. precision. sensitivity. resolution. accuracy. precision. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Kelvin’s double bridge is used to measure low resistance because resistance variation due to temperature. it has high sensitivity. there is no thermo electric emf. effect of contact and lead resistance is eliminated. resistance variation due to temperature. it has high sensitivity. there is no thermo electric emf. effect of contact and lead resistance is eliminated. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation In a wheatstone bridge, a change of 6 Ω in the unknown arm of bridge is required to produce a change in deflection of 2.4 mm of the galvanometer. The sensitivity is 0.4 mm/Ω 5.0 mm/Ω 0.8 mm/Ω 2.5 mm/Ω 0.4 mm/Ω 5.0 mm/Ω 0.8 mm/Ω 2.5 mm/Ω ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Why is a MISC meter not recommended for DC measurement? The meter is calibrated for AC and it’s error for DC would be high The error is high due to hysteresis effect The meter does not respond to DC signals The error is high due to eddy current effect The meter is calibrated for AC and it’s error for DC would be high The error is high due to hysteresis effect The meter does not respond to DC signals The error is high due to eddy current effect ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The transfer instrument which is used for standardization of a polar type AC potentiometer is a dynamometer instrument. a moving coil instrument. an electrostatic instrument. a thermal instrument. a dynamometer instrument. a moving coil instrument. an electrostatic instrument. a thermal instrument. ANSWER DOWNLOAD EXAMIANS APP
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