Exercise :: Signals and Systems - Section 1
- Signals and Systems - Section 1
- Signals and Systems - Section 2
- Signals and Systems - Section 3
- Signals and Systems - Section 4
- Signals and Systems - Section 5
- Signals and Systems - Section 6
- Signals and Systems - Section 7
- Signals and Systems - Section 8
- Signals and Systems - Section 9
- Signals and Systems - Section 10
36. | The signal defined by the equations f(t) = 0 for t < 0, f(t) = E for 0 ≤ t ≤ a and f(t) = 0 for t > a is |
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Answer: Option B Explanation: It is a pulse lasting for t = a. |
37. | Inverse Laplace transform of is |
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Answer: Option B Explanation:
f(t) = e^{-2t} + e^{-3t}. |
38. | Two function g_{1}(t) and g_{2}(t) with correlation of 6 has average power of 4 and 5 respectively. The power of g_{1}(t) + g_{2}(t) is |
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Answer: Option B Explanation: Power of two correlated signal is P = P_{1} + P_{2} +2R_{1}, _{2}(t). |
39. | A box has 4 white and 3 red balls. Two balls are taken out in succession. What is the probability that both are white? |
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Answer: Option C Explanation: The probability that first ball is white is and the probability the second ball is white is . The probability that both are white is . |
40. | Z transform is a non-linear operation. |
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Answer: Option B Explanation: Z transform is a linear operation. |