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Electromagnetic Field Theory

Electromagnetic Field Theory
The magnetic vector potential due to a single conductor carrying current is

 infinite.
 finite.
 zero.
 none of tha above.

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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

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

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Electromagnetic Field Theory
A waveguide operated below cut off frequency can be used as

An isolator
An attenuator
Phase shifter
None

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Electromagnetic Field Theory
Tropospheric scatter is used with frequencies in the

VLF
VHF
UHF
HF

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Electromagnetic Field Theory
The magnitude of force acting on a current carrying conductor placed in a magnetic field is independent of

 current flowing through the conductor.
 length of conductor.
 flux density.
 cross-sectional area of conductor.

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Electromagnetic Field Theory
Voltage applied across a dielectric produces an electrostatic field 50 times greater than air. The dielectric constant of the dielectric will be

 5.
 20.
 50.
 10.

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MORE MCQ ON Electromagnetic Field Theory

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