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Electromagnetic Field Theory

Electromagnetic Field Theory
In H-plane metal plate lens the travelling wave front is

Neither accelerated nor retarded
Accelerated
Totally retarded
Retarded

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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

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

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Electromagnetic Field Theory
Radiation intensity in a given direction is the

None of these
Energy radiated per square metre
Power radiated per square metre
Power radiated per unit solid angle in that direction

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Electromagnetic Field Theory
A voltage waveform V(t) = 12t2 is applied across a 1H inductor for t = 0, with initial current through it being zero. The current through the inductor for t = 0 is given by

 12t3.
 24t.
 12t.
 4t3.

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

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

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Electromagnetic Field Theory
Two coils are coupled in such a way that the mutual inductance between them is 20 mH. If the inductances of the coils are 40 mH and 50 mH respectively, the coefficient of coupling is

 0.447.
 0.577.
 0.01.
 0.477.

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MORE MCQ ON Electromagnetic Field Theory

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