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Electronics and Communication Engineering - Exam Questions Papers

Exercise : Exam Questions Papers - Exam Paper 13
26.
The Function F = ∑(0, 3, 4, 5, 7) is implemented using the multiplexer then Identify the correct one :
None
Answer: Option
Explanation:
No answer description is available. Let's discuss.
27.
Which of the following Boolean algebra rules is correct?
A . A = 1
A + AB = A + B
A + A B = A + B
A(A + B) = B
Answer: Option
Explanation:
No answer description is available. Let's discuss.
28.
The Table given below is the mark obtained by 2 students in 8 different subjects.

The coefficient of correlation is:
-0.4748
0.4748
-0.0338
0.0338
Answer: Option
Explanation:
No answer description is available. Let's discuss.
29.
In PSK modulation, the input signal is :
S1(t) = A cos ω0t and S2(t) = - A cos ω0t
S1(t) = S2(t) = A cos ω0t
Answer: Option
Explanation:
No answer description is available. Let's discuss.
30.
Which of the following statements about the matched filter in a communication receiver are correct?
  1. Its impulse response depends on the signed shape
  2. It maximizes the SNR at the detection shape.
  3. It produces ISI.
  4. It may produce phase error if synchronization is improper.
Select the correct answer from the codes given below:
1 and 4 only
1 and 2 only
2, 3 and 4
1, 2 and 4
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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