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 : |
Answer: Option C
Explanation:
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| 27. |
Which of the following Boolean algebra rules is correct? |
| A. |
A . A = 1 | | B. |
A + AB = A + B | | C. |
A + A B = A + B | | D. |
A(A + B) = B |
Answer: Option C
Explanation:
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| 28. |
The Table given below is the mark obtained by 2 students in 8 different subjects.
The coefficient of correlation is: |
Answer: Option A
Explanation:
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| 29. |
In PSK modulation, the input signal is : |
| A. |
S1(t) = A cos ω0t and S2(t) = - A cos ω0t | | B. |
S1(t) = S2(t) = A cos ω0t | | C. |
 | | D. |
 |
Answer: Option A
Explanation:
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| 30. |
Which of the following statements about the matched filter in a communication receiver are correct? - Its impulse response depends on the signed shape
- It maximizes the SNR at the detection shape.
- It produces ISI.
- It may produce phase error if synchronization is improper.
Select the correct answer from the codes given below: |
| A. |
1 and 4 only | | B. |
1 and 2 only | | C. |
2, 3 and 4 | | D. |
1, 2 and 4 |
Answer: Option B
Explanation:
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