MCQOPTIONS
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MCQOPTIONS
This section includes 20 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. |
In the equation xq(n)=axq(n-1)+dq(n), if a < 1 then integrator is called? |
| A. | Leaky integrator |
| B. | Ideal integrator |
| C. | Ideal accumulator |
| D. | Both Ideal integrator & accumulator |
| Answer» B. Ideal integrator | |
| 2. |
In the equation xq(n)=axq(n-1)+dq(n), if a = 1 then integrator is called? |
| A. | Leaky integrator |
| B. | Ideal integrator |
| C. | Ideal accumulator |
| D. | Both Ideal integrator & accumulator |
| Answer» E. | |
| 3. |
In DM, the quantizer is a simple ________ bit and ______ level quantizer. |
| A. | 2-bit, one-level |
| B. | 1-bit, two-level |
| C. | 2-bit, two level |
| D. | 1-bit, one level |
| Answer» C. 2-bit, two level | |
| 4. |
What is the abbreviation of DM? |
| A. | Diameter Modulation |
| B. | Distance Modulation |
| C. | Delta Modulation |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 5. |
The simplest form of differential predictive quantization is called? |
| A. | AM |
| B. | BM |
| C. | DM |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 6. |
To reduce the dynamic range of the difference signal d(n) = x(n) – \(\hat{x}(n)\), thus a predictor of order p has the form? |
| A. | \(\hat{x}(n)=\sum_{k=1}^pa_k x(n+k)\) |
| B. | \(\hat{x}(n)=\sum_{k=1}^pa_k x(n-k)\) |
| C. | \(\hat{x}(n)=\sum_{k=0}^pa_k x(n+k)\) |
| D. | \(\hat{x}(n)=\sum_{k=0}^pa_k x(n-k)\) |
| Answer» C. \(\hat{x}(n)=\sum_{k=0}^pa_k x(n+k)\) | |
| 7. |
If the difference d(n) = x(n)–ax(n-1), then what is the optimum choice for a = ? |
| A. | \({γ_{xx} (1)}{σ_x^2}\) |
| B. | \({γ_{xx} (0)}{σ_x^2}\) |
| C. | \({γ_{xx} (0)}{σ_d^2}\) |
| D. | \({γ_{xx} (1)}{σ_d^2}\) |
| Answer» B. \({γ_{xx} (0)}{σ_x^2}\) | |
| 8. |
What is the variance of the difference between two successive signal samples, d(n) = x(n)–ax(n-1)? |
| A. | \(σ_d^2=2σ_x^2 [1-a^2]\) |
| B. | \(σ_d^2=σ_x^2 [1+a^2]\) |
| C. | \(σ_d^2=σ_x^2 [1-a^2]\) |
| D. | \(σ_d^2=2σ_x^2 [1+a^2]\) |
| Answer» D. \(σ_d^2=2σ_x^2 [1+a^2]\) | |
| 9. |
What is the variance of the difference between two successive signal samples, d(n) = x(n) – x(n-1)? |
| A. | \(σ_d^2=2σ_x^2 [1+γ_{xx} (1)]\) |
| B. | \(σ_d^2=2σ_x^2 [1-γ_{xx} (1)]\) |
| C. | \(σ_d^2=4σ_x^2 [1-γ_{xx} (1)]\) |
| D. | \(σ_d^2=3σ_x^2 [1-γ_{xx} (1)]\) |
| Answer» C. \(σ_d^2=4σ_x^2 [1-γ_{xx} (1)]\) | |
| 10. |
What is the abbreviation of DM?$ |
| A. | Diameter Modulation |
| B. | Distance Modulation |
| C. | Delta Modulation |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 11. |
The_simplest_form_of_differential_predictive_quantization_is_called?$ |
| A. | AM |
| B. | BM |
| C. | DM |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 12. |
In the equation xq(n)=axq(n-1)+ dq(n), if a < 1 then integrator is called? |
| A. | Leaky integrator |
| B. | Ideal integrator |
| C. | Ideal accumulator |
| D. | Both Ideal integrator & accumulator |
| Answer» B. Ideal integrator | |
| 13. |
In the equation xq(n)=axq(n-1)+ dq(n), if a = 1 then integrator is called? |
| A. | Leaky integrator |
| B. | Ideal integrator |
| C. | Ideal accumulator |
| D. | Both Ideal integrator & accumulator |
| Answer» E. | |
| 14. |
In DM, What is the order of predictor is used? |
| A. | Zero-order predictor |
| B. | Second-order predictor |
| C. | First-order predictor |
| D. | Third-order predictor |
| Answer» D. Third-order predictor | |
| 15. |
In DM, the quantizer is a simple ________ bit and ______ level quantizer? |
| A. | 2-bit, one-level |
| B. | 1-bit, two-level |
| C. | 2-bit, two level |
| D. | 1-bit, one level |
| Answer» C. 2-bit, two level | |
| 16. |
What are the main uses of DPCM? |
| A. | Speech Decoding and Transmission over mobiles |
| B. | Speech Encoding and Transmission over mobiles |
| C. | Speech Decoding and Transmission over telephone channels |
| D. | Speech Encoding and Transmission over telephone channels |
| Answer» E. | |
| 17. |
What is the expansion of DPCM? |
| A. | Differential Pulse Code Modulation |
| B. | Differential Plus Code Modulation |
| C. | Different Pulse Code Modulation |
| D. | None of the mentioned |
| Answer» B. Differential Plus Code Modulation | |
| 18. |
The differential predictive signal quantizer system is known as? |
| A. | DCPM |
| B. | DMPC |
| C. | DPCM |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 19. |
What is the quantity ax(n-1) is called? |
| A. | Second-order predictor of x(n) |
| B. | Zero-order predictor of x(n) |
| C. | First-order predictor of x(n) |
| D. | Third-order predictor of x(n) |
| Answer» D. Third-order predictor of x(n) | |
| 20. |
For a given number of bits, the power of quantization noise is proportional to the variance of the signal to be quantized. |
| A. | True |
| B. | False |
| Answer» B. False | |