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Electronics and Communication Engineering - Electromagnetic Field Theory

Exercise : Electromagnetic Field Theory - Section 5
21.
Which of the wave remains unaffected whether it is a day or night?
Sky wave
Ground wave
Tropospheric wave
Space wave
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
Which of the following is not an omnidirectional antenna?
Log periodic
Half-wave dipole
Discone
Marconi
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
The unit of magnetic flux density is
farad/metre
ohm/metre
tesla
ampere/metre
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
In a waveguide if TE mode exist for z direction propagation, then
Ez = 0, Hz ≠ 0
Ez = 0, Hz = 0
Ez ≠ 0, Hz = 0
Ez ≠ 0, Hz ≠ 0
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
Critical frequency of a layer in ionosphere
fc = 9 N
fc = 81 N2
fc = 81 N
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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