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Electromagnetic Field Theory

Electromagnetic Field Theory
Which antenna is a wideband antenna?

Marconi antenna
None of these
Hertz antenna
Folded dipole

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Electromagnetic Field Theory
In an iron core coil the iron core is removed so that the coil becomes an air core coil. The inductance of the coil will

 remain the same.
 increase.
 decrease.
 initially increase and then decrease.

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Electromagnetic Field Theory
Coulombs law for the force between electric charges most closely resembles with

 Law of conservation of energy.
 Gauss theorem.
 Newtons law of motion.
 Newtons law of gravitation.

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Electromagnetic Field Theory
The skip distance is the maximum distance upto which ionospheric reflection is possible.

False
True

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Electromagnetic Field Theory
Tropospheric scatter is used with frequencies in the

VHF
UHF
VLF
HF

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Electromagnetic Field Theory
A conductor of length L has current I passing through it, when it is placed parallel to strong magnetic field. The force experienced by the conductor will be

 BL2I.
 BI2L.
 BIL.
 zero.

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MORE MCQ ON Electromagnetic Field Theory

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