Which of the following statement regarding waveguides is incorrect?
A
At waveguide can be coupled to a coaxial cable
B
At frequencies below the cut off value the wave progresses across the waveguide after total reflections
C
Waveguides are usually air filled hollow conducting metallic tubes for transmitting UHF and microwaves
D
Waveguides can handle large power at UHF and microwaves
Correct Answer: At waveguide can be coupled to a coaxial cable