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Electronics and Communication Engineering - Communication Systems

Exercise : Communication Systems - Section 15
16.
Consider the following statements about advantages of phase discriminator over slope detector
  1. Fewer tuned circuits
  2. Greater limiting
  3. Better linearity
  4. Easy alignment
Which of the above are true?
1, 2, 3, 4
2, 3, 4
1, 2, 3
1, 3, 4
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
In a superheterodyne radio receiver
RF amplifier normally operates at 455 kHz above carrier frequency
mixer input must be tuned to the signal frequency
local oscillator operates below signal frequency
local oscillator frequency is double the IF
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
The assigned carrier frequency of an FM broadcast station is 96.3 MHz. Its FM signal has a centre frequency of
10 MHz
455 kHz
48.15 MHz
96.3 MHz
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
Digital television is also called
High digital television
High definition television
High deflection television
High display television
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
The number of spectral component of a cosine wave is
1
0
2
4
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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