MCQOPTIONS
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MCQOPTIONS
This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Digital Signal Processing Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Is the system with impulse response h(n)=2nu(n-1) stable. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
x(n)*δ(n-n0)=? |
| A. | x(n+n0) |
| B. | x(n-n0) |
| C. | x(-n-n0) |
| D. | x(-n+n0) |
| Answer» C. x(-n-n0) | |
| 3. |
x(n)*[h1(n)+h2(n)]=x(n)*h1(n)+x(n)*h2(n). |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
Determine the impulse response for the cascade of two LTI systems having impulse responses h1(n)=\((\frac{1}{2})^2\) u(n) and h2(n)=\((\frac{1}{4})^2\) u(n). |
| A. | \((\frac{1}{2})^n[2-(\frac{1}{2})^n]\), n<0 |
| B. | \((\frac{1}{2})^n[2-(\frac{1}{2})^n]\), n>0 |
| C. | \((\frac{1}{2})^n[2+(\frac{1}{2})^n]\), n<0 |
| D. | \((\frac{1}{2})^n[2+(\frac{1}{2})^n]\), n>0 |
| Answer» C. \((\frac{1}{2})^n[2+(\frac{1}{2})^n]\), n<0 | |
| 5. |
x(n)*(h1(n)*h2(n))=(x(n)*h1(n))*h2(n). |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
Determine the output y(n) of a LTI system with impulse response h(n)=anu(n), |a|<1with the input sequence x(n)=u(n). |
| A. | \(\frac{1-a^{n+1}}{1-a}\) |
| B. | \(\frac{1-a^{n-1}}{1-a}\) |
| C. | \(\frac{1+a^{n+1}}{1+a}\) |
| D. | None of the mentioned |
| Answer» B. \(\frac{1-a^{n-1}}{1-a}\) | |
| 7. |
The formula y(n)=\(\sum_{k=-\infty}^{\infty}x(k)h(n-k)\) that gives the response y(n) of the LTI system as the function of the input signal x(n) and the unit sample response h(n) is known as ______________ |
| A. | Convolution sum |
| B. | Convolution product |
| C. | Convolution Difference |
| D. | None of the mentioned |
| Answer» B. Convolution product | |
| 8. |
Resolve the sequence into a sum of weighted impulse sequences. |
| A. | 2δ(n)+4δ(n-1)+3δ(n-3) |
| B. | 2δ(n+1)+4δ(n)+3δ(n-2) |
| C. | 2δ(n)+4δ(n-1)+3δ(n-2) |
| D. | None of the mentioned |
| Answer» C. 2δ(n)+4δ(n-1)+3δ(n-2) | |