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Electronics and Communication Engineering - Electromagnetic Field Theory

Exercise : Electromagnetic Field Theory - Section 12
41.
A transmission line has primary constants R, L, G and C and secondary constant z0 and γ = (a + Jβ). If the line is loss less, then
R = 0, G ≠ 0, and a = 0
R = 0, G = a, 0 and β = |r|
G = 0, a = β
R = 0, G = 0, a = 0, β = |r|
Answer: Option
Explanation:
No answer description is available. Let's discuss.
42.
Which of the following is multiband HF receiving antenna?
Square loop
Log-periodic
Conical horn
Folded dipole
Answer: Option
Explanation:
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43.
A rectangular waveguide is a
rectangular conducting wire to propagate electromagnetic waves
hollow rectangular walled room carrying electromagnetic wave
hollow rectangular conducting tube through which electromagnetic waves can be propagated
tube antenna to transmit and receive electromagnetic waves
Answer: Option
Explanation:
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44.
If a and b are the dimensions of waveguide then
a = 3b
a = 2b
a = b
a = b/4
Answer: Option
Explanation:
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45.
The frequency range for satellite communication is
3 to 30 kHz
300 to 3000 kHz
3000 to 30000 MHz
30000 to 300000 MHz
Answer: Option
Explanation:
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