Measurement and Instrumentation The power factor of a single phase load can be calculated if the instruments available are One voltmeter and one ammeter One voltmeter, one ammeter and one wattmeter Any of the listed here One ammeter, one voltmeter and one energy meter One voltmeter and one ammeter One voltmeter, one ammeter and one wattmeter Any of the listed here One ammeter, one voltmeter and one energy meter ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A wattmeter reads 30.34 W. The absolute error in the measurement is - 2.22 W. What is the true value of power? None of these 32.56 W . 25.45 W. 28.12 W. None of these 32.56 W . 25.45 W. 28.12 W. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Piezoelectric effect is carried out in crystal filter. m derived. constant k prototype. composite filter. crystal filter. m derived. constant k prototype. composite filter. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Relative error is same as true error. ratio of absolute error and true value. absolute error. None of these true error. ratio of absolute error and true value. absolute error. None of these ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Figure show an RC potentiometer to measure AC voltage. It is desire that Vo/Vi should be independent of frequency. The value of C shoud be 0.09 µF. 10 µF. 11 µF. 0.1 µF. 0.09 µF. 10 µF. 11 µF. 0.1 µF. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The errors introduced by an instrument fall in which category ? Environmental errors Random errors Gross errors Systematic errors Environmental errors Random errors Gross errors Systematic errors ANSWER DOWNLOAD EXAMIANS APP