Measurement and Instrumentation The three resistors R1, R2 and R3 have the following ratings: R1 = 25Ω ± 4%, R2 = 65 Ω ± 4%; R3 =45 Ω ± 4%. If the resistance are connected in series, then limiting error produced in equivalent resistance is 3% 1% 4% 2% 3% 1% 4% 2% ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Wagner earthing device is used to eliminate errors due to None of these Electrostatic coupling Both A and B Electromagnetic coupling None of these Electrostatic coupling Both A and B Electromagnetic coupling ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation For power measurement of three phase circuit by two wattmeter method, when the value of power factor is less than 0.5 lagging Pressure coil of the wattmeter will become ineffective. One of the wattmeters will read zero Both give the same readings One of the wattmeter connections will have to be reversed Pressure coil of the wattmeter will become ineffective. One of the wattmeters will read zero Both give the same readings One of the wattmeter connections will have to be reversed ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation To measure ac as well as dc power, we use Sometimes induction and sometimes dynamometer wattmeter Dynamometer wattmeter Induction wattmeter None of the listed here Sometimes induction and sometimes dynamometer wattmeter Dynamometer wattmeter Induction wattmeter None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A Manganin swap resistance is connected in series with a moving coil ammeter consisting of a milli ammeter and a suitable shunt in order to Reduce the size of the meter. Minimize the effect of stray magnetic fields. Obtaine large deflecting torque. Minimize the effect of temperature variation. Reduce the size of the meter. Minimize the effect of stray magnetic fields. Obtaine large deflecting torque. Minimize the effect of temperature variation. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The chemical effect of current is used in C. energy meter C. ammeter None of these C. ammeter hour meter C. energy meter C. ammeter None of these C. ammeter hour meter ANSWER DOWNLOAD EXAMIANS APP
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