EXAMIANS
The meter constant of an energy meter is 1500 rev/kWh, the disc makes 3000 revolution in a given time. The energy consumed is
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The resistance of a circuit is measured from the relation R= P/I2, where P is the power fed into the circuit and I is the current flowing through it. If the limiting errors in the measurement of power and current are respectively ± 1.0% and ± 1.0%, then what will be the limiting error in measurement of resistance ?
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A voltmeter using thermocouple measures
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The material of the shunt should have _______ temperature co-efficient of resistance.
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A 0 - 200 V voltmeter has a guaranteed accuracy of 1% of full scale reading. The voltage measured by this instrument is 50 V. What is the limiting error?
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Dynamic errors are caused by
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Which of the following devices should be used for accurate measurement of low D.C. voltage?
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To measure an A. C. voltage by using an A.C. potentiometer, it is desirable that the supply for the potentiometer in taken
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The full-scale deflection current of an ammeter is 1 mA and its internal resistance is 100°hm. This is to have full deflection when 100V is measured. What is the value of series resistor to be used?
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Direct method is used to measure
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