Electronics and Communication Engineering - Microwave Communication

1.
Which one of the following is also called 'rat race'?
E plane tee
H plane tee
Magic tee
Hybrid ring
Answer: Option
Explanation:
No answer description is available. Let's discuss.

2.
Radar principle is used in
detection of aircraft
burglar alarms
garage door openers
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.

3.
In an optional fiber the refractive index of cladding material should be
nearly 1
very low
less than that of core
more than that of core
Answer: Option
Explanation:
No answer description is available. Let's discuss.

4.
In microwave circuits, a mode transducer is used to
change mode of wave transmission
change direction of wave transmission
change polarization of wave transmission
change mode, direction or polarization wave transmission
Answer: Option
Explanation:
No answer description is available. Let's discuss.

5.
A waveguide connected to a circularly polarized antenna must be able to efficiently propagate both vertically and horizontally polarised waves.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.