Electronics and Communication Engineering - Electromagnetic Field Theory

16.
A ship-to-ship communication system is plagued by fading. The best solution seems to be the use of
space diversity
frequency diversity
a broad band antenna
a more directional antenna
Answer: Option
Explanation:
No answer description is available. Let's discuss.

17.
Which one of the following is not a correct Maxwell equation?
∇ x D = f
Answer: Option
Explanation:
No answer description is available. Let's discuss.

18.
If a wave is propagated in free space, it will be in nature of
TE
TM
TEM
Any one of above
Answer: Option
Explanation:
No answer description is available. Let's discuss.

19.
When the height of a vertical earthed antenna is less than λ/4
the base input impedance will be capacitive
the base input impedance will be purely resistive
the base input impedance will be inductive
the base input impedance will be negligibly small
Answer: Option
Explanation:
No answer description is available. Let's discuss.

20.
Which of the following is a circularly polarized antenna?
Rhombic
Circular loop
Helical
Yagi
Answer: Option
Explanation:
No answer description is available. Let's discuss.