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Electromagnetic Field Theory

Electromagnetic Field Theory
The electric field on a plane is decribed by . The field due to

 none of above.
 a monopole.
 a dipole and a monopole.
 a dipole.

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Electromagnetic Field Theory
In a lossless medium the intrinsic impedance η = 60π and μr = 1. The relative dielectric constant εr shall be

 2.
 4.
 8.
 1.

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Electromagnetic Field Theory
Two coupled coils with L1 = L2 = 0.6 H have a coupling coefficient of K = 0.8. The turns ratio N1/N2 is

 0.5.
 4.
 2.
 1.

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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

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

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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

Loss coefficient
Front to back ratio
Transmission efficiency
None of these

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Electromagnetic Field Theory
In above problem the induced emf will be reduced to half if the conductor moves an angle of

  60° to the direction of field.
  75° to the direction of field.
  30° to the direction of field.
  45° to the direction of field.

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