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. |
An IIR system with system function H(z)= ( frac{B(z)}{A(z)} ) is called a mixed phase if ___________ |
| A. | All poles and zeros are inside the unit circle |
| B. | All zeros are outside the unit circle |
| C. | All poles are outside the unit circle |
| D. | Some, but not all of the zeros are outside the unit circle |
| Answer» E. | |
| 2. |
An IIR system with system function H(z)= ( frac{B(z)}{A(z)} ) is called a minimum phase if ___________ |
| A. | All poles and zeros are inside the unit circle |
| B. | All zeros are outside the unit circle |
| C. | All poles are outside the unit circle |
| D. | All poles and zeros are outside the unit circle |
| Answer» B. All zeros are outside the unit circle | |
| 3. |
If the frequency response of an FIR system is given as H(z)=1-5/2z-1-3/2z-2, then the system is ___________ |
| A. | Minimum phase |
| B. | Maximum phase |
| C. | Mixed phase |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 4. |
If the frequency response of an FIR system is given as H(z)=1-z-1-6z-2, then the system is ___________ |
| A. | Minimum phase |
| B. | Maximum phase |
| C. | Mixed phase |
| D. | None of the mentioned |
| Answer» C. Mixed phase | |
| 5. |
If the frequency response of an FIR system is given as H(z)=6+z-1-z-2, then the system is ___________ |
| A. | Minimum phase |
| B. | Maximum phase |
| C. | Mixed phase |
| D. | None of the mentioned |
| Answer» B. Maximum phase | |
| 6. |
What is the causal inverse of the FIR system with impulse response h(n)= (n)-a (n-1)? |
| A. | (n)-a (n-1) |
| B. | (n)+a (n-1) |
| C. | a<sup>-n</sup> |
| D. | a<sup>n</sup> |
| Answer» E. | |
| 7. |
What is the inverse of the system with impulse response h(n)= (n)-1/2 (n-1)? |
| A. | (1/2)<sup>n</sup>u(n) |
| B. | -(1/2)<sup>n</sup>u(-n-1) |
| C. | (1/2)<sup>n</sup>u(n) & -(1/2)<sup>n</sup>u(-n-1) |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 8. |
What is the inverse of the system with impulse response h(n)=(1/2)nu(n)? |
| A. | (n)+1/2 (n-1) |
| B. | (n)-1/2 (n-1) |
| C. | (n)-1/2 (n+1) |
| D. | (n)+1/2 (n+1) |
| Answer» C. (n)-1/2 (n+1) | |
| 9. |
If h(n) is the impulse response of an LTI system T and h1(n) is the impulse response of the inverse system T-1, then which of the following is true? |
| A. | [h(n)*h<sub>1</sub>(n)].x(n)=x(n) |
| B. | [h(n).h<sub>1</sub>(n)].x(n)=x(n) |
| C. | [h(n)*h<sub>1</sub>(n)]*x(n)=x(n) |
| D. | [h(n).h<sub>1</sub>(n)]*x(n)=x(n) |
| Answer» D. [h(n).h<sub>1</sub>(n)]*x(n)=x(n) | |
| 10. |
If a system is said to be invertible, then? |
| A. | One-to-one correspondence between its input and output signals |
| B. | One-to-many correspondence between its input and output signals |
| C. | Many-to-one correspondence between its input and output signals |
| D. | None of the mentioned |
| Answer» B. One-to-many correspondence between its input and output signals | |