Electronics and Communication Engineering - Microwave Communication

31. 

A short circuited stub is preferred to an open circuited stub because an open circuited stub

A. is more difficult to fabricate and construct
B. is made of transmission line of different Z0
C. is liable to radiate
D. is incapable of giving full range of reactance

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

32. 

If the peak transmitted power in a radar is increased by a factor 81, the maximum range is increased by a factor of

A. 3
B. 9
C. 27
D. 81

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

33. 

Radar is essentially an echo ranging system

A. True
B. False

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

34. 

In Gunn diode electrons are transferred from

A. Ridge guide is essentially a form of capacitively loaded guide
B. low to high mobility energy bands
C. valley to domain formation
D. domain to valley formation

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

35. 

Consider the following statements about radar Beacon

  1. It is also called transponder.
  2. It includes pulse transmitter, receiver and antenna.
  3. It replies with full power even when the signal receives is weak.
Which of the above statements are correct?

A. All
B. 1 and 2 only
C. 2 and 3 only
D. 2 only

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.