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
| 21. | If |
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Answer: Option C Explanation: If
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then for this to be true x(t) is
.| 22. | For the discrete time system of the given figure |
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Answer: Option C Explanation: uk + 0.5 yk - 1 - 0.25 yk - 2 = yk. |
| 23. | The analog signal m(t) is given below m(t) = 4 cos 100 pt + 8 sin 200 pt + cos 300 pt, the Nyquist sampling rate will be |
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Answer: Option C Explanation: m (t) = 4 cos 100 pt + 8 sin 200 pt + cos 300 pt Nyquist sampling freq fs ≤ 2fm where fm is highest frequency component in given signal and highest fm in 3rd part 2pfmt = 300 pt fm = 150 Hz fs = 2 x 150 p 300 Hz
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.| 24. | The ROC of sequence in the Z.T. of sequence x[n] = an ∪ [n] is |
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Answer: Option C Explanation: The simplest method to find the ROC. Put denominator to greater than zero. |
| 25. | In Laplace transform, multiplication by e-at in time domain becomes |
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Answer: Option A Explanation: £e-at f(t) = F(s + a). |