EXAMIANS
_______ instruments are those which measure the total quantity of the electricity delivered in a particular time.
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The error of an instrument is normally given as a percentage of
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Some wire- wound resistors have bifilar winding. This type of winding is used to
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A 1 mA meter is to be converted to 1 A ammeter. The meter resistance is 100 Ω. The value of shunt resistance
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With a sweep time 10ms across the screen the approx. horizontal sawtooth frequency will be
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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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How many fundamental units are there ?
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An electrodynamic meter can be used to measure
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For power measurement of three phase circuit by two wattmeter method, when the value of power factor is less than 0.5 lagging
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A permanent magnet moving coil ammeter is connected in 50 Hz a. c. Circuit in which 5A current is flowing. The meter will read
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