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Electromagnetic Field Theory

Electromagnetic Field Theory
A square corner reflector is used in

Point to point communication
Radio astronomy
All of these
Tv broadcast

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Electromagnetic Field Theory
A conductor of length 100 cm moves at right angles to a magnetic field of flux density 1.5 Wb/m2 with a velocity of 50 m/s. The induced emf in the conductor will be

 150 V.
 75 V.
 50 V.
 37.5 V.

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Electromagnetic Field Theory
The virtual height of an ionospheric layer is __________ true height

Less than
Higher than
Equal to
No relation

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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

 8.
 1.
 4.
 2.

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Electromagnetic Field Theory
Mutual inductance between two magnetically coupled coils depends on

 cross sectional area of their common core.
 the number of their turns.
 all of above.
 permeability of core.

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Electromagnetic Field Theory
A satellite that simply reflect back the signals from one region of the earth to the other region is known as

Orbiting satellite
Passive satellite
Geostationary satellite
Active satellite

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MORE MCQ ON Electromagnetic Field Theory

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