MCQOPTIONS
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MCQOPTIONS
This section includes 14 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. |
AM-to-PM conversion brings about |
| A. | Amplitude variation |
| B. | Phase variation |
| C. | Frequency variation |
| D. | None of the mentioned |
| Answer» C. Frequency variation | |
| 2. |
AM-to-AM conversion brings about |
| A. | Amplitude variation |
| B. | Phase variation |
| C. | Frequency variation |
| D. | None of the mentioned |
| Answer» B. Phase variation | |
| 3. |
In which repeaters uplink is decoupled from the downlink? |
| A. | Regenerative |
| B. | Non regenerative |
| C. | Regenerative & Non regenerative |
| D. | None of the mentioned |
| Answer» B. Non regenerative | |
| 4. |
When two networks are connected in series, its composite noise figure can be given as |
| A. | F1+(F2-1)/G1 |
| B. | F1-(F2-1)/G1 |
| C. | F2+(F1-1)/G1 |
| D. | F1G1+(F2-1) |
| Answer» B. F1-(F2-1)/G1 | |
| 5. |
Noise figure is a parameter that represents a ______ of the system. |
| A. | Noisiness |
| B. | Efficiency |
| C. | Maximum output |
| D. | Maximum power handling capacity |
| Answer» B. Efficiency | |
| 6. |
Noise figure measures the |
| A. | Power degradation |
| B. | Noise degradation |
| C. | SNR degradation |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 7. |
AM-TO-AM_CONVERSION_BRINGS_ABOUT?$ |
| A. | Amplitude variation |
| B. | Phase variation |
| C. | Frequency variation |
| D. | None of the mentioned |
| Answer» B. Phase variation | |
| 8. |
IN_WHICH_REPEATERS_UPLINK_IS_DECOUPLED_FROM_THE_DOWNLINK??$ |
| A. | Regenerative |
| B. | Non regenerative |
| C. | Regenerative & Non regenerative |
| D. | None of the mentioned |
| Answer» B. Non regenerative | |
| 9. |
AM-to-PM conversion brings about$ |
| A. | Amplitude variation |
| B. | Phase variation |
| C. | Frequency variation |
| D. | None of the mentioned |
| Answer» C. Frequency variation | |
| 10. |
What are the functions of non-regenerative repeaters? |
| A. | Amplifies |
| B. | Re transmits |
| C. | Amplifies & Re transmits |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 11. |
What are the functions of satellite repeaters? |
| A. | Re transmits |
| B. | Regenerates |
| C. | Reconstitutes |
| D. | All of the mentioned |
| Answer» E. | |
| 12. |
Which parameter is referred to as receiver sensitivity? |
| A. | S/N ratio |
| B. | G/T ratio |
| C. | EIRP |
| D. | PR/N0 |
| Answer» C. EIRP | |
| 13. |
Atmospheric window region is used for |
| A. | Satellite communication |
| B. | Deep-space communication |
| C. | Satellite & Deep-space communication |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 14. |
The space window region ranges from |
| A. | 1GHz to 10 GHz |
| B. | 10GHz to 100GHZ |
| C. | 5GHz to 50GHz |
| D. | 1MHz to 10MHz |
| Answer» B. 10GHz to 100GHZ | |