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Electromagnetic Field Theory

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
Which of following can induce the maximum induced voltage ?

 1 amp 100 Hz.
 1 amp 1 Hz.
 20 amp dc.
 1 amp dc.

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Electromagnetic Field Theory
In free space E (z, t) = 103 sin(ωt - βz) uy v/m. What is the value of H (z, t)

 None of above.
 (103/377) sin(ωt - β z)(-ux) A/m.
 (103/377) sin(ωt - β z)(ux) A/m.
 (103/377) cos(ωt - β z)(-ux) A/m.

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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

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

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Electromagnetic Field Theory
A metal sphere with 1 m radius and a surface charge density of 10 coulombs/m2 is enclosed in a cube of 10 m side. The total outward electric displacement normal to the surface of the cube is

 5 C.
 10 C.
 40π C.
 None of above.

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Electromagnetic Field Theory
A dipole having a moment p – 3ux - 5uy + 10uz ncm is located at p(1,2,-4) in free space. The V as Q(2,3,4) is

 2.62 V.
 1.26 V.
 2.52 V.
 1.31 V.

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MORE MCQ ON Electromagnetic Field Theory

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