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Electromagnetic Field Theory

Electromagnetic Field Theory
Whenever the magnetic flux changes with respect to an electric conductor or a coil, an EMF is induced in the conductor is Faraday’s

 first law
 second law
 third law
 fourth law

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Electromagnetic Field Theory
Which of the following impedance inversion is obtained?

A quarter wave line
A half wave line
Balun transformer
Short-circuited stub

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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)

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

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Electromagnetic Field Theory
A medium is said to be isotropic when

 ∈ = μσ.
 ∈ is zero.
 ∈ = μ.
 ∈ is a scalar constant.

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Electromagnetic Field Theory
The main purpose of choke is

 to pass high frequencies.
 to block low frequencies.
 none of above.
  to pass low frequencies.

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Electromagnetic Field Theory
Conductor is varying and field is fixed then emf will be induced. This principle is called

 dynamically induced emf.
None of these
 static induced emf.
 both A and B.

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