MCQOPTIONS
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MCQOPTIONS
This section includes 23 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. |
If M and N are the orders of numerator and denominator of rational system function respectively, then how many memory locations are required in direct form-I realization of that IIR filter? |
| A. | M+N+1 |
| B. | M+N |
| C. | M+N-1 |
| D. | M+N-2 |
| Answer» B. M+N | |
| 2. |
What are the main characteristics of Anti aliasing filter? |
| A. | Ensures that bandwidth of signal to be sampled is limited to frequency range |
| B. | To limit the additive noise spectrum and other interference, which corrupts the signal |
| C. | All of the mentioned |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 3. |
What is the binary equivalent of (-3/8)? |
| A. | (10011)2 |
| B. | (0011)2 |
| C. | (1100)2 |
| D. | (1101)2 |
| Answer» E. | |
| 4. |
The binary digit b-A is called as: |
| A. | LSB |
| B. | Total value |
| C. | MSB |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 5. |
The parallel form realization is also known as normal form representation. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
When the frequency band is selected we can specify the sampling rate and the characteristics of the pre filter, which is also called as __________ filter. |
| A. | Analog filter |
| B. | Anti aliasing filter |
| C. | Analog & Anti aliasing filter |
| D. | None of the mentioned |
| Answer» C. Analog & Anti aliasing filter | |
| 7. |
Which of the following is the application of lattice filter? |
| A. | Digital speech processing |
| B. | Adaptive filter |
| C. | Electroencephalogram |
| D. | All of the mentioned |
| Answer» E. | |
| 8. |
What is the condition to call a number λ is an Eigen value of F and a nonzero vector U is the associated Eigen vector? |
| A. | (F+ λI)U=0 |
| B. | (F- λI)U=0 |
| C. | F- λI=0 |
| D. | None of the mentioned |
| Answer» C. F- λI=0 | |
| 9. |
If E=255 and M≠0, then which of the following statement is true about X? |
| A. | Not a number |
| B. | Infinity |
| C. | Defined |
| D. | Zero |
| Answer» B. Infinity | |
| 10. |
For a twos complement representation, the truncation error is: |
| A. | Always positive |
| B. | Always negative |
| C. | Zero |
| D. | None of the mentioned |
| Answer» C. Zero | |
| 11. |
In general, a digital system designer has better control of tolerances in a digital signal processing system than an analog system designer who is designing an equivalent analog system. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 12. |
What is the configuration of system for digital processing of an analog signal? |
| A. | Analog signal|| Pre-filter ->D/A Converter -> Digital Processor -> A/D Converter -> Post-filter |
| B. | Analog signal|| Pre-filter ->A/D Converter -> Digital Processor -> D/A Converter -> Post-filter |
| C. | Analog signal|| Post-filter ->D/A Converter -> Digital Processor -> A/D Converter -> Pre-filter |
| D. | None of the mentioned |
| Answer» C. Analog signal|| Post-filter ->D/A Converter -> Digital Processor -> A/D Converter -> Pre-filter | |
| 13. |
In the mathematical model for the quantization error e_q (n), to carry out the analysis, what are the assumptions made about the statistical properties of e_q (n)? 1. The error e_q (n) is uniformly distributed over the range — ∆ /2 < e_q (n) < ∆ /2. 2. The error sequence is a stationary white noise sequence. In other words, the error e_q (m) and the error e_q (n) for m≠n are uncorrelated. 3. The error sequence {e_q (n)} is uncorrelated with the signal sequence x(n). 4. The signal sequence x(n) is zero mean and stationary. |
| A. | 1, 2 & 3 |
| B. | 1,2,3,4 |
| C. | 1, 3 |
| D. | 2, 3, 4 |
| Answer» C. 1, 3 | |
| 14. |
In DM, further the two integrators at encode are replaced by one integrator placed before comparator, and then such system is called? |
| A. | System-delta modulation |
| B. | Sigma-delta modulation |
| C. | Source-delta modulation |
| D. | None of the mentioned |
| Answer» C. Source-delta modulation | |
| 15. |
Due to non-uniform resolution, the corresponding error in a floating point representation is proportional to the number being quantized. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 16. |
If we reverse the directions of all branch transmittances and interchange the input and output in the flow graph, then the resulting structure is called as: |
| A. | Direct form-I |
| B. | Transposed form |
| C. | Direct form-II |
| D. | None of the mentioned |
| Answer» C. Direct form-II | |
| 17. |
The determinant |F- λI|=0 yields the characteristic polynomial of the matrix F. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 18. |
If (101.01)2=(x)10, then what is the value of x? |
| A. | 505.05 |
| B. | 10.101 |
| C. | 101.01 |
| D. | 5.25 |
| Answer» E. | |
| 19. |
What is the 2's complement of (1100)2? |
| A. | (0100)2 |
| B. | (0011)2 |
| C. | (0111)2 |
| D. | (1100)2 |
| Answer» B. (0011)2 | |
| 20. |
The selection o f the sampling rate Fs=1/T, where T is the sampling interval, not only determines the highest frequency (Fs/2) that is preserved in the analog signal, but also serves as a scale factor that influences the design specifications for digital filters |
| A. | True |
| B. | False |
| Answer» B. False | |
| 21. |
What is the resolution to cover a range of numbers xmax-xmin with 'b' number of bits? |
| A. | (xmax+xmin)/(2b-1) |
| B. | (xmax+xmin)/(2b+1) |
| C. | (xmax-xmin)/(2b-1) |
| D. | (xmax-xmin)/(2b+1) |
| Answer» D. (xmax-xmin)/(2b+1) | |
| 22. |
The output signal of a system is extracted at a sink node. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 23. |
What are the mantissa and exponent required respectively to represent '5' in binary floating point representation? |
| A. | 011,0.110000 |
| B. | 0.110000,011 |
| C. | 011,0.101000 |
| D. | 0.101000,011 |
| Answer» E. | |