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Electromagnetic Field Theory

Electromagnetic Field Theory
The potential that appears at a point in space due to the current which caused it is called potential

Accelerating
Lagging the current
Retardation
Oscillating

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Electromagnetic Field Theory
The two windings of a transformer have an inductor of 2 H each. If mutual inductor between them is also 2 H, then

 turns ratio of the transformer is also two.
 transformer is an ideal transformer.
 none of these.
 it is a perfect transformer.

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Electromagnetic Field Theory
In case of antenna the ratio of the power radiated in the desired direction to the power radiated in the opposite direction is known as

None of these
Loss coefficient
Front to back ratio
Transmission efficiency

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Electromagnetic Field Theory
In above question no. 9, the average force on the core to reduce the air gap will be

 6664.8 N.
 1666.22 N.
 832.29 N.
 3332.47 N.

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Electromagnetic Field Theory
Electric field strength of charge

 Increase distance.
 Decrease with distance.
 Increase square distance.
 Decrease with square distance.

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Electromagnetic Field Theory
Which of following circuit element stores energy in electro-magnetic field?

 Condenser.
 Inductor.
 Variable Resistor.
 Capacitor.

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MORE MCQ ON Electromagnetic Field Theory

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