Measurement and Instrumentation The error of an instrument is normally given as a percentage of Mean value Measured value Rms value Full-scale value Mean value Measured value Rms value Full-scale value ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Which wave has the least form factor? Sine wave Triangular wave Square wave Rectangular wave Sine wave Triangular wave Square wave Rectangular wave ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Most accurate measurement of unknown resistance will be by Voltmeter and ammeter Ohmmeter Wheatstone bridge Potentiometer Voltmeter and ammeter Ohmmeter Wheatstone bridge Potentiometer ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The meter constant of a single phase 240 V induction watthour meter is 400 revolutions per KWh. The speed of the meter disc for a current of 10 Amperes of 0.8 p.f lagging will be 21.1 rpm. 16.02 rpm. 12.8 rpm. 18.2 rpm. 21.1 rpm. 16.02 rpm. 12.8 rpm. 18.2 rpm. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation It is found that 10A current passes through a resistor of 10°hms. The resistor has 5% tolerance . The error in measurement of current can be as high as 5%. What is max error in measurement of power, calculated from measured value of I and the nominal value of resistor? 150W 200W 50W 100W 150W 200W 50W 100W ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation For handling greater currents induction watt-meters are used in conjunction with Either of the above Current transformers Power transformers Potential transformers Either of the above Current transformers Power transformers Potential transformers ANSWER DOWNLOAD EXAMIANS APP
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