Measurement and Instrumentation One single phase wattmeter operating on 230V and 5A for 5 hours makes 1940 revolutions. Meter constant in revolutions is 400. What is the power factor of the land? 0.73 0.84 1 0.65 0.73 0.84 1 0.65 ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A galvanometer has Air friction damping Eddy current damping Fluid friction damping Spring coil damping Air friction damping Eddy current damping Fluid friction damping Spring coil damping ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation If two 300V full scale voltmeters V1 and V2 having sensitivities of 100 kOhm/V and 150 kOhm/V are connected in series to measure 500V then V1 = 0V and V2 = 0V. V1 = 300V and V2 = 200V. V1 = 200V and V2 = 300V. V1 = 250V and V2 = 250V. V1 = 0V and V2 = 0V. V1 = 300V and V2 = 200V. V1 = 200V and V2 = 300V. V1 = 250V and V2 = 250V. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The difference between the indicated value and the true value of a quantity is Gross error Absolute error Dynamic error Relative error Gross error Absolute error Dynamic error Relative error ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A 150 V moving iron voltmeter of accuracy class 1-0 reads 75 V when used in a circuit under standard condition. The maximum possible percentage error in the reading is 1% 2% 1.5% 2.5% 1% 2% 1.5% 2.5% ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A single phase load is connected between R and Y terminals of a 415 V, symmetrical, 3-phase, 4 wire system with phase sequence RYB. A wattmeter is connected in the system as shown in figure. The power factor of the load is 0.8 lagging. The wattmeter will read + 597 W. + 795 W. - 597 W. - 795 W. + 597 W. + 795 W. - 597 W. - 795 W. ANSWER DOWNLOAD EXAMIANS APP
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