MCQOPTIONS
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MCQOPTIONS
This section includes 15 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. |
The number of filters in CPM receiver structure is |
| A. | LM |
| B. | ML |
| C. | M/L |
| D. | None of the mentioned |
| Answer» C. M/L | |
| 2. |
CPM has |
| A. | Narrower bandwidth |
| B. | Wider bandwidth |
| C. | More bandwidth requirement |
| D. | None of the mentioned |
| Answer» B. Wider bandwidth | |
| 3. |
Continuous phase modulation has |
| A. | More bandwidth efficiency |
| B. | More smoothness |
| C. | More bandwidth efficiency & smoothness |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 4. |
What is the function of the edge detector? |
| A. | Differentiation |
| B. | Rectification |
| C. | Differentiation & Rectification |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 5. |
WHAT_IS_THE_FUNCTION_OF_THE_EDGE_DETECTOR??$ |
| A. | Differentiation |
| B. | Rectification |
| C. | Differentiation & Rectification |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 6. |
CPM has$ |
| A. | Narrower bandwidth |
| B. | Wider bandwidth |
| C. | More bandwidth requirement |
| D. | None of the mentioned |
| Answer» B. Wider bandwidth | |
| 7. |
Continuous_phase_modulation_has$ |
| A. | More bandwidth efficiency |
| B. | More smoothness |
| C. | More bandwidth efficiency & smoothness |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 8. |
The_number_of_filters_in_CPM_receiver_structure_is |
| A. | LM |
| B. | ML |
| C. | M/L |
| D. | None of the mentioned |
| Answer» C. M/L | |
| 9. |
To avoid the loop to be driven to lock, the sweep rate should be |
| A. | Smaller |
| B. | Larger |
| C. | It does not depend on it |
| D. | None of the mentioned |
| Answer» B. Larger | |
| 10. |
Acquisition is a ______ operation. |
| A. | Linear |
| B. | Non linear |
| C. | Linear & Non linear |
| D. | None of the mentioned |
| Answer» C. Linear & Non linear | |
| 11. |
When phase noise and phase jitter is doubled, the phase variance increases by |
| A. | Two times |
| B. | Four times |
| C. | 0.5 times |
| D. | 8 times |
| Answer» C. 0.5 times | |
| 12. |
A cycle slip occurs when the magnitude of the original phase error exceeds |
| A. | Π radians |
| B. | 2π radians |
| C. | π/2 radians |
| D. | π2 radians |
| Answer» C. ‚âà√¨‚àö√ë/2 radians | |
| 13. |
PLL designs have |
| A. | First order loop |
| B. | Second order loop |
| C. | Higher order loop |
| D. | None of the mentioned |
| Answer» C. Higher order loop | |
| 14. |
In VCO the output frequency is a linear function of its input |
| A. | Frequency |
| B. | Voltage |
| C. | Time period |
| D. | None of the mentioned |
| Answer» C. Time period | |
| 15. |
Phase locked loops consists of |
| A. | Phase detectors |
| B. | Loop filter |
| C. | Voltage controlled oscillator |
| D. | All of the mentioned |
| Answer» E. | |