Measurement and Instrumentation For measuring an AC voltage by an AC potentiometer it is desirable that the supply for the potentiometer is taken from Any of above. The same source as the unknown voltage. A battery. A source other than the source of unknown voltage. Any of above. The same source as the unknown voltage. A battery. A source other than the source of unknown voltage. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The time/div and voltage axes of an oscilloscope have been creased. A student connects a 1 KHz, 5 V P-P square wave calibrition pulse to channel-1 of the scope and observes the screen to be as shown in the upper trace of figure. An unknown signal is connected to channel-2 (lower trace) of the scope. If the time/div and V/div on both channels are the same, the amplitude (P-P) and period of the unknown signal are respectively 10 V, 1 ms. 5 V, 2 ms. 7.5 V, 2 ms. 5 V, 1 ms. 10 V, 1 ms. 5 V, 2 ms. 7.5 V, 2 ms. 5 V, 1 ms. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The transfer instrument which is used for standardization of a polar type AC potentiometer is a thermal instrument. a moving coil instrument. an electrostatic instrument. a dynamometer instrument. a thermal instrument. a moving coil instrument. an electrostatic instrument. a dynamometer instrument. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The coil of a moving coil meter has 100 turns, is 40 mm long and 30 mm wide. The control torque is 240×10-6 N-m on full scale. If magnetic flux density is 1Wb/m2 range of meter is 3 mA. 4 mA. 2 mA. 1 mA. 3 mA. 4 mA. 2 mA. 1 mA. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The error of an instrument is normally given as a percentage of Measured value Mean value Full-scale value Rms value Measured value Mean value Full-scale value Rms value ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A mulliammeter can be used as Wattmeter Frequency meter Ohmmeter Voltmeter and ammeter Wattmeter Frequency meter Ohmmeter Voltmeter and ammeter ANSWER DOWNLOAD EXAMIANS APP
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