EXAMIANS
A galvanometer has
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A permanent magnet moving coil ammeter has a coil resistance of 99ohm and Full Scale DeflectionFSD. current of 0.1mA. Shunt resistance is 1 ohm. Current through the meter at 0.5 F.S.D is
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When a capacitor was connected to the terminal of ohmmeter, the pointer indicated a low resistance initially and then slowly came to infinity position. This shows that capacitor is
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A multirange instrument has
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The current coil of a wattmeter is connected to the CT of R-phase. The potential coil is connected across Y and B phases. The wattmeter measures
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With a sweep time 10ms across the screen the approx. horizontal sawtooth frequency will be
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_______ instruments are those which measure the total quantity of the electricity delivered in a particular time.
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Some wire- wound resistors have bifilar winding. This type of winding is used to
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The internal resistance of a milli-ammeter must be very low for
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Alternating current is measured by
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