MCQOPTIONS
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MCQOPTIONS
This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Digital Signal Processing 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)* (n-n0)=? |
| A. | x(n+n<sub>0</sub>) |
| B. | x(n-n<sub>0</sub>) |
| C. | x(-n-n<sub>0</sub>) |
| D. | x(-n+n<sub>0</sub>) |
| Answer» C. x(-n-n<sub>0</sub>) | |
| 3. |
An LTI system is said to be causal if and only if? |
| A. | Impulse response is non-zero for positive values of n |
| B. | Impulse response is zero for positive values of n |
| C. | Impulse response is non-zero for negative values of n |
| D. | Impulse response is zero for negative values of n |
| Answer» E. | |
| 4. |
x(n)*[h1(n)+h2(n)]=x(n)*h1(n)+x(n)*h2(n). |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
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 | |
| 6. |
x(n)*(h1(n)*h2(n))=(x(n)*h1(n))*h2(n). |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
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} ) | |
| 8. |
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 | |