MCQOPTIONS
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MCQOPTIONS
This section includes 13 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. |
According to reciprocity theorem, _____ and _____ are identical. |
| A. | Transmitting power and receiving power |
| B. | Transmitting gain and receiving gain |
| C. | Effective area and physical area |
| D. | None of the mentioned |
| Answer» C. Effective area and physical area | |
| 2. |
Effective radiated power of an isotropic radiator can be given as a product of |
| A. | Radiated power and received power |
| B. | Effective area and physical area |
| C. | Transmitted power and transmitting gain |
| D. | Receiving power and receiving gain |
| Answer» D. Receiving power and receiving gain | |
| 3. |
Antenna’s efficiency is given by the ratio of |
| A. | Effective aperture to physical aperture |
| B. | Physical aperture to effective aperture |
| C. | Signal power to noise power |
| D. | Losses |
| Answer» B. Physical aperture to effective aperture | |
| 4. |
EFFECTIVE_RADIATED_POWER_OF_AN_ISOTROPIC_RADIATOR_CAN_BE_GIVEN_AS_A_PRODUCT_OF?$ |
| A. | Radiated power and received power |
| B. | Effective area and physical area |
| C. | Transmitted power and transmitting gain |
| D. | Receiving power and receiving gain |
| Answer» D. Receiving power and receiving gain | |
| 5. |
According_to_reciprocity_theorem,_______and_______are_identical.$ |
| A. | Transmitting power and receiving power |
| B. | Transmitting gain and receiving gain |
| C. | Effective area and physical area |
| D. | None of the mentioned |
| Answer» C. Effective area and physical area | |
| 6. |
Antenna’s efficiency is given by the ratio o?# |
| A. | Effective aperture to physical aperture |
| B. | Physical aperture to effective aperture |
| C. | Signal power to noise power |
| D. | Losses |
| Answer» B. Physical aperture to effective aperture | |
| 7. |
Space loss occurs due to a decrease in |
| A. | Electric field strength |
| B. | Efficiency |
| C. | Phase |
| D. | Signal power |
| Answer» B. Efficiency | |
| 8. |
Mechanism contributing to a reduction in efficiency is called as |
| A. | Amplitude tapering |
| B. | Blockage |
| C. | Edge diffraction |
| D. | All of the mentioned |
| Answer» E. | |
| 9. |
Antennas are used |
| A. | As transducer |
| B. | To focus |
| C. | As transducer & To focus |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 10. |
Which factor adds phase noise to the signal? |
| A. | Jitter |
| B. | Phase fluctuations |
| C. | Jitter & Phase fluctuations |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 11. |
Which is the primary cost for degradation of error performance? |
| A. | Loss in signal to noise ratio |
| B. | Signal distortion |
| C. | Signal distortion & Loss in signal to noise ratio |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 12. |
Link budget can help in predicting |
| A. | Equipment weight and size |
| B. | Technical risk |
| C. | Prime power requirements |
| D. | All of the mentioned |
| Answer» E. | |
| 13. |
Link budget consists of calculation of |
| A. | Useful signal power |
| B. | Interfering noise power |
| C. | Useful signal & Interfering noise power |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |