MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Digital Communications knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
In which mixing is easier? |
| A. | Analog signal |
| B. | Digital signal |
| C. | Analog & Digital signal |
| D. | None of the mentioned |
| Answer» C. Analog & Digital signal | |
| 2. |
Transmitted pulse becomes distorted due to |
| A. | Ideal transmission characteristic |
| B. | Non ideal transmission characteristic |
| C. | All of the mentioned |
| D. | None of the mentioned |
| Answer» C. All of the mentioned | |
| 3. |
Different cases of sampling include |
| A. | Ideal impulse sampling |
| B. | Flat-topped sampling |
| C. | Sampling with rectangular pulses |
| D. | All of the mentioned |
| Answer» E. | |
| 4. |
The quantization will be finer when |
| A. | Smaller the number of discrete amplitudes |
| B. | Larger the number of discrete amplitudes |
| C. | Does not depend on amplitudes |
| D. | None of the mentioned |
| Answer» C. Does not depend on amplitudes | |
| 5. |
Non uniform quantization includes |
| A. | Compression |
| B. | Expansion |
| C. | Compression & Expansion |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 6. |
Delay element in delta modulation acts as |
| A. | First order predictor |
| B. | Second order predictor |
| C. | Third order predictor |
| D. | Fourth order predictor |
| Answer» B. Second order predictor | |
| 7. |
Source coding reduces |
| A. | Redundancy |
| B. | Average bit rate |
| C. | Redundancy & Average bit rate |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 8. |
Shot noise occurs in |
| A. | Transistors |
| B. | Valves |
| C. | Transistors & Valves |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 9. |
Auto-correlation function is a |
| A. | Even function |
| B. | Odd function |
| C. | Even & Odd function |
| D. | None of the mentioned |
| Answer» B. Odd function | |
| 10. |
Which signals are function of time? |
| A. | Random signal |
| B. | Deterministic signal |
| C. | Random & Deterministic signal |
| D. | None of the mentioned |
| Answer» C. Random & Deterministic signal | |