MCQOPTIONS
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MCQOPTIONS
This section includes 18 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. |
What is the order of operations to be performed in order to realize linear phase IIR filter?(i) Passing x(-n) through a digital filter H(z)(ii) Time reversing the output of H(z)(iii) Time reversal of the input signal x(n)(iv) Passing the result through H(z) |
| A. | (i),(ii),(iii),(iv) |
| B. | (iii),(i),(ii),(iv) |
| C. | (ii),(iii),(iv),(i) |
| D. | (i),(iii),(iv),(ii) |
| Answer» C. (ii),(iii),(iv),(i) | |
| 2. |
If the filter is in linear phase, then filter would have a mirror-image pole outside the unit circle for every pole inside the unit circle. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
What is the condition on the system function of a linear phase filter? |
| A. | H(z)=\(z^{-N} H(z^{-1})\) |
| B. | H(z)=\(z^N H(z^{-1})\) |
| C. | H(z)=\(±z^N H(z^{-1})\) |
| D. | H(z)=\(±z^{-N} H(z^{-1})\) |
| Answer» E. | |
| 4. |
Physically realizable and stable IIR filters cannot have linear phase. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
If the conversion technique is to be effective, then the LHP of s-plane should be mapped into _____________ |
| A. | Outside of unit circle |
| B. | Unit circle |
| C. | Inside unit circle |
| D. | Does not matter |
| Answer» D. Does not matter | |
| 6. |
If the conversion technique is to be effective, the jΩ axis in the s-plane should map into the unit circle in the z-plane. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
What is the relation between h(t) and Ha(s)? |
| A. | Ha(s)=\( \int_{-\infty}^{\infty} h(t)e^{-st} dt\) |
| B. | Ha(s)=\(\int_0^{\infty} h(t)e^{st} dt\) |
| C. | Ha(s)=\( \int_{-\infty}^{\infty} h(t)e^{st} dt\) |
| D. | None of the mentioned |
| Answer» B. Ha(s)=\(\int_0^{\infty} h(t)e^{st} dt\) | |
| 8. |
Which of the following is the difference equation of the FIR filter of length M, input x(n) and output y(n)? |
| A. | y(n)=\(\sum_{k=0}^{M+1} b_k x(n+k)\) |
| B. | y(n)=\(\sum_{k=0}^{M+1} b_k x(n-k)\) |
| C. | y(n)=\(\sum_{k=0}^{M-1} b_k x(n-k)\) |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 9. |
PHYSICALLY_REALIZABLE_AND_STABLE_IIR_FILTERS_CANNOT_HAVE_LINEAR_PHASE.?$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
If the filter is in linear phase, then filter would have a mirror-image pole outside the unit circle for every pole inside the unit circle.$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 11. |
When an application requires a linear phase filter, it should be an FIR filter. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 12. |
What is the order of operations to be performed in order to realize linear phase IIR filter? |
| A. | Passing x(-n) through a digital filter H(z) |
| B. | Time reversing the output of H(z) |
| C. | Time reversal of the input signal x(n) |
| D. | Passing the result through H(z) |
| Answer» C. Time reversal of the input signal x(n) | |
| 13. |
If the conversion technique is to be effective, then the LHP of s-plane should be mapped into? |
| A. | Outside of unit circle |
| B. | Unit circle |
| C. | Inside unit circle |
| D. | Does not matter |
| Answer» D. Does not matter | |
| 14. |
If the conversion technique is to be effective, the jΩ axis in the s-plane should map into the unit circle in the z-plane.$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 15. |
For an analog LTI system to be stable, where should the poles of system function H(s) lie? |
| A. | Right half of s-plane |
| B. | Left half of s-plane |
| C. | On the imaginary axis |
| D. | At origin |
| Answer» C. On the imaginary axis | |
| 16. |
Which of the following is a representation of system function? |
| A. | Normal system function |
| B. | Laplace transform |
| C. | Rational system function |
| D. | All of the mentioned |
| Answer» E. | |
| 17. |
Which of the following methods are used to convert analog filter into digital filter? |
| A. | Approximation of Derivatives |
| B. | Bilinear transformation |
| C. | Impulse invariance |
| D. | All of the mentioned |
| Answer» E. | |
| 18. |
What is the duration of the unit sample response of a digital filter? |
| A. | Finite |
| B. | Infinite |
| C. | Impulse(very small) |
| D. | Zero |
| Answer» C. Impulse(very small) | |