Q. What is the effect of frequency on the torque of a moving system?

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Q. In an ordinary dynamometer, the deflecting torque is _________

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Q. Errors are introduced by ________

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Q. Power coil has a low value of ________

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Q. Resistance of pressure coil in a low power factor dynamometer type wattmeter is ________

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Q. Low power factor wattmeters are designed to ________

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Q. Power loss in the current coil is ________

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Q. Pressure coil has no error.

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Q. Error in a pressure coil can be compensated.

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Q. Induction type instruments are used for ____________

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Q. Driving system in an induction type single phase energy meter consists of _________

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Q. Series electromagnet consists of _________

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Q. Shunt magnet consists of _________

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Q. Shunt magnet has _________

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Q. Moving system of the induction type single phase energy meter has _________

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Q. Braking system consists of _________

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Q. What is the effect of eddy currents in the aluminium disc?

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Q. An energy meter produces a flux of ∅ when connected to a supply V.

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Q. The energy meter always measures the load energy correctly.

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Q. Obtaining correct reading from the energy meter requires ______________

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