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Electromagnetic Field Theory

Electromagnetic Field Theory
Two straight parallel conductors carry equal currents in opposite direction. The force between them is

 repulsive.
 attractive.
 none of above.
 zero.

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Electromagnetic Field Theory
It is best to use for coupling a coaxial line to a parallel wire transmission line.

Balun
Directional Coupler
Slotted line
Tee

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Electromagnetic Field Theory
The radiation pattern of Hertzian dipole in the plane perpendicular to dipole is a

Figure of eight
Null
Circle
None of these

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

Folded dipole
Log-periodic
Square loop
Conical horn

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Electromagnetic Field Theory
A coil of 300 turns is wound on a non magnetic core having a mean circumference of 300 mm and a cross sectional area of 300 mm2. The inductance of the coil corresponding to a magnetizing current of 6 A will be

 1.1304 μH.
 37.68 μH.
  113.04 μH.
 3.768 μH.

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Electromagnetic Field Theory
If the static magnetic flux density is B, then

 Curl of B = J.
 Divergence of B = J.
 Curl of B = 0.
  Divergence of B = 0.

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MORE MCQ ON Electromagnetic Field Theory

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