IndiaBIX

Electronics and Communication Engineering - Communication Systems

Exercise : Communication Systems - Section 12
1.
Which of the following is the main advantage of PCM system?
Lower noise
Lower power
Lower bandwidth
All of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
2.
BPSK stands for
Binary Phase Shifting Key
Broad Phase Shifting Key
Bit Phase Shifting Key
Binary Pulse Shifting Key
Answer: Option
Explanation:
No answer description is available. Let's discuss.
3.
If a dipole is meant for a frequency of 1 MHz, the length of each rod is about
5 m
20 m
100 m
50 m
Answer: Option
Explanation:
No answer description is available. Let's discuss.
4.
Consider the following statements:
In a radar system having a high value of the ratio (antenna diameter)/wavelength
  1. the maximum range is large
  2. good target discrimination is achieved
  3. capture area is increased
  4. target acquisition is difficult
Which of the above are correct?
1, 2, 3, 4
1, 2, 3
1, 2
1, 3, 4
Answer: Option
Explanation:
No answer description is available. Let's discuss.
5.

Assertion (A): The maximum range of a radar is proportional to fourth root of the peak transmitted pulse power.

Reason (R): Radar signals are subjected twice to inverse square law.

Both A and R are correct and R is correct explanation of A
Both A and R are correct but R is not correct explanation of A
A is correct but R is wrong
A is wrong but R is correct
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers