MCQOPTIONS
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MCQOPTIONS
This section includes 10 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. |
The function given by the equation x(n)=1, for n=0; x(n)=0, for n 0 is a _____________ |
| A. | Step function |
| B. | Ramp function |
| C. | Triangular function |
| D. | Impulse function |
| Answer» E. | |
| 2. |
What is the condition for a signal x(n)=Brn where r=e T to be called as an decaying exponential signal? |
| A. | 0<r< |
| B. | 0<r<1 |
| C. | r>1 |
| D. | r<0 |
| Answer» C. r>1 | |
| 3. |
Time scaling operation is also known as ___________ |
| A. | Down-sampling |
| B. | Up-sampling |
| C. | Sampling |
| D. | None of the mentioned |
| Answer» B. Up-sampling | |
| 4. |
The odd part of a signal x(t) is? |
| A. | x(t)+x(-t) |
| B. | x(t)-x(-t) |
| C. | (1/2)*(x(t)+x(-t)) |
| D. | (1/2)*(x(t)-x(-t)) |
| Answer» E. | |
| 5. |
A real valued signal x(n) is called as anti-symmetric if ___________ |
| A. | x(n)=x(-n) |
| B. | x(n)=-x(-n) |
| C. | x(n)=-x(n) |
| D. | none of the mentioned |
| Answer» C. x(n)=-x(n) | |
| 6. |
x(n)* (n-k)=? |
| A. | x(n) |
| B. | x(k) |
| C. | x(k)* (n-k) |
| D. | x(k)* (k) |
| Answer» D. x(k)* (k) | |
| 7. |
The signal given by the equation ( sum_{n=-{ infty}}^{ infty}|x(n)|^2 ) is known as __________ |
| A. | Energy signal |
| B. | Power signal |
| C. | Work done signal |
| D. | None of the mentioned |
| Answer» B. Power signal | |
| 8. |
The phase function of a discrete time signal x(n)=an, where a=r.ej is? |
| A. | tan(n ) |
| B. | n |
| C. | tan<sup>-1</sup>(n ) |
| D. | none of the mentioned |
| Answer» C. tan<sup>-1</sup>(n ) | |
| 9. |
The discrete time function defined as u(n)=n for n 0;u(n)=0 for n<0 is an _____________ |
| A. | Unit sample signal |
| B. | Unit step signal |
| C. | Unit ramp signal |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 10. |
If x(n) is a discrete-time signal, then the value of x(n) at non integer value of n is? |
| A. | Zero |
| B. | Positive |
| C. | Negative |
| D. | Not defined |
| Answer» E. | |