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

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

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Electromagnetic Field Theory
Which of the following statement regarding waveguides is incorrect?

At waveguide can be coupled to a coaxial cable
Waveguides can handle large power at UHF and microwaves
Waveguides are usually air filled hollow conducting metallic tubes for transmitting UHF and microwaves
At frequencies below the cut off value the wave progresses across the waveguide after total reflections

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