Electromagnetic Field Theory
In a perfect conductor the incident and reflected wave combine to produce

A stronger incident wave
A stronger reflected wave
None of these
A standing wave which is not progressing

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

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

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