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Electronics and Communication Engineering - Electromagnetic Field Theory

Exercise : Electromagnetic Field Theory - Section 3
16.
The I/P impedance of a long short circuited section of a loss less transmission line is
zero
inductive
capacitance
infinite
Answer: Option
Explanation:

if Zi = -jkZ0 then capacitive = jkZ0 the inductive.

17.
Which of the following relations is correct?
∇ . = r
∇ . = r
∇ . = - r
∇ . =
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
For frequencies upto 1650 kHz __________ antenna is used
yagi
grounded
turnstile
marconi
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
Due to which of the following reasons, the ground wave eventually disappears, as one moves away from the transmitter?
Tilting
Loss of line-of-eight conditions
Interference from the sky wave
Maximum single hop distance limitation
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
A loop antenna may be of
square on triangular shape
hexagonal shape
circular shape
any of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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