EXAMIANS
Potentiometer method of DC voltage measurement is more accurate than direct measurement using a voltmeter because
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The rectifier instrument is not free from
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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
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The watt hour meter is ______ instrument.
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A DC potentiometer is designed to measure up to about 2V with a slide wire of 800 mm. A standard cell of emf 1.18 V obtains balances at 600 mm. A test cell is seen to obtain balance at 680 mm. The emf of test cell is
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Piezoelectric effect is carried out in
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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
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Moving iron instruments have _____ scale.
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_______ is used to measure the flow of air around aeroplane.
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Which one the following statements is correct? The application of the instrument in wrong manner in the procedure of measurement results in a/an
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