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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Q. Phase angle can be made 90 degrees using ____________

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Q. Shading coil consists of many thick turns.

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Q. Copper shading bands are _________

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Q. As copper shading bands move up ________

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Q. Shunt flux is made to lag the applied voltage using ________

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Q. At overloads, magnetic shunt ________

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Q. Energy meter reads correctly when the ___________

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Q. Small torque for energy meter is provided __________

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Q. Driving torque is small and is adjustable.

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Q. Friction torque is eliminated by _________

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Q. Frictional errors are dominant in an energy meter.

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Q. At full load, disc __________

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Q. Self braking torque is _________

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Q. Self braking action is minimised by _________

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Q. Overload compensating devices is _________

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Q. Magnitude of flux in an energy meter varies __________

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