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. |
EXAMPLES_OF_DOUBLE_SIDE_BAND_SIGNALS_ARE?$ |
| A. | ASK |
| B. | PSK |
| C. | ASK & PSK |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 2. |
A_PULSE_SHAPING_FILTER_SHOULD_SATISFY_TWO_REQUIREMENTS._THEY_ARE?$ |
| A. | Should be realizable |
| B. | Should have proper roll off factor |
| C. | Should be realizable & have proper roll off factor |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 3. |
Which value of r (roll off factor) is considered as Nyquist minimum bandwidth case? |
| A. | 0 |
| B. | 1 |
| C. | Infinity |
| D. | None of the mentioned |
| Answer» B. 1 | |
| 4. |
Roll off factor is the fraction of |
| A. | Excess bandwidth and absolute bandwidth |
| B. | Excess bandwidth and minimum nyquist bandwidth |
| C. | Absolute bandwidth and minimum nyquist bandwidth |
| D. | None of the mentioned |
| Answer» C. Absolute bandwidth and minimum nyquist bandwidth | |
| 5. |
The minimum nyquist bandwidth for the rectangular spectrum in raised cosine filter is |
| A. | 2T |
| B. | 1/2T |
| C. | T<sup>2</sup> |
| D. | 2/T |
| Answer» C. T<sup>2</sup> | |
| 6. |
Examples of nyquist filters are |
| A. | Root raised cosine filter |
| B. | Raised cosine filter |
| C. | Root raised & Raised cosine filter |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 7. |
A nyquist pulse is the one which can be represented by _____ shaped pulse multiplied by another time function. |
| A. | Sine |
| B. | Cosine |
| C. | Sinc |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 8. |
What is symbol rate packing? |
| A. | Maximum possible symbol transmission rate |
| B. | Maximum possible symbol receiving rate |
| C. | Maximum bandwidth |
| D. | Maximum ISI value allowed |
| Answer» B. Maximum possible symbol receiving rate | |
| 9. |
If each pulse of the sequence to be detected is in _____ shape, the pulse can be detected without ISI. |
| A. | Sine |
| B. | Cosine |
| C. | Sinc |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 10. |
The method in which the tail of one pulse smears into adjacent symbol interval is called as |
| A. | Intersymbol interference |
| B. | Interbit interference |
| C. | Interchannel interference |
| D. | None of the mentioned |
| Answer» B. Interbit interference | |