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Electromagnetic Field Theory

Electromagnetic Field Theory
Magnetic field intensity at centre of circular coil, of diameter 1 m and carrying a current of 2 A is

 4 A/m.
 8 A/m.
 2 A/m.
 1 A/m.

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Electromagnetic Field Theory
Which of the following is multiband HF receiving antenna?

Square loop
Conical horn
Log-periodic
Folded dipole

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Electromagnetic Field Theory
Parabolic and lens antenna used at

Medium frequency
Low frequency
Microwave frequency
High frequency

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Electromagnetic Field Theory
Tropospheric scatter is used with frequencies in the

VHF
VLF
UHF
HF

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Electromagnetic Field Theory
The force required to seperate two surfaces with a contact area measuring 5 cm by 6 cm, when flux density normal to the surface is 0.8 tesla, will be

 764 N.
 7640 N.
 76400 N.
 76.4 N.

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Electromagnetic Field Theory
Find H for centre of solenoid having finite length d = 1 unit where N = no of turns = 500, I = 2 A.

 500.
 None of these.
 100.
 1000.

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MORE MCQ ON Electromagnetic Field Theory

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