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Electromagnetic Field Theory

Electromagnetic Field Theory
The frequency range for satellite communication is

300 to 3000 kHz
3 to 30 kHz
30000 to 300000 MHz
3000 to 30000 MHz

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Electromagnetic Field Theory
Which of following can induce the maximum induced voltage ?

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

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Electromagnetic Field Theory
If a and b are the dimensions of waveguide then

a = 2b
a = b/4
a = b
a = 3b

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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

 24t.
 12t.
 4t3.
 12t3.

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Electromagnetic Field Theory
An infinite sheet has a charge density of 150 μ C/m. The flux density in μ C/m 2 is

 50.
 1/75.
 75.
 100.

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Electromagnetic Field Theory
Two point charges (Q and – Q) are situated at the vertex of the square. If potential at another vertex is 2 V, so potential at opposite vertex (diagonally) is

 Zero.
  2 V.
 1 V.
 √ 2 V.

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MORE MCQ ON Electromagnetic Field Theory

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