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
Answer: Option A
This Question Belongs to Electronics And Communications Engineering >> Electromagnetic Field Theory
Join The Discussion
Comments ( 1 )
A loop antenna is a commonly used for
A. Radar
B. Direction finding
C. Satellite communication
D. All of the above
The divergence of a vector is a scalar, while the curl of a vector is another
A. Scalar
B. Vector
C. Unit vector
D. None of the above
Which antenna is a wideband antenna?
A. Hertz antenna
B. Marconi antenna
C. Folded dipole
D. None of the above
A. Accelerating
B. Retardation
C. Oscillating
D. Lagging the current
what about option B?
since waveguide is a high pass filter, wave propagation is possible only above the cut off frequency