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Electromagnetic Field Theory

Electromagnetic Field Theory
A medium is said to be isotropic when

 ∈ is a scalar constant.
 ∈ = μ.
 ∈ = μσ.
 ∈ is zero.

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Electromagnetic Field Theory
The radiation pattern of loop antenna is

Elliptical
Cardoid or Limacon
Semicircle
Circle

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Electromagnetic Field Theory
A loop antenna is a commonly used for

Satellite communication
Direction finding
All of these
Radar

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Electromagnetic Field Theory
1 Tesla =

 1 wb/m.
 1 wb .
 1 wb- m2.
 1 wb/ m2.

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Electromagnetic Field Theory
In case of surface waves the field strength at a point is directly proportional to

Distance of the point from the antenna
Wave frequency
Antenna height
Current of the antenna

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Electromagnetic Field Theory
An emf of 16 volts is induced in a coil of inductance 4 H. The rate of change of current must be

 64 A / s.
 4 A / s.
 16 A / s.
 32 A / s.

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MORE MCQ ON Electromagnetic Field Theory

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