MCQOPTIONS
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MCQOPTIONS
This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Satellite Communication knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Mark out the WRONG statement. As compared to FDMA, the demand assignment system TDMA |
| A. | Needs very high-speed burst modems |
| B. | Faces no problems caused by intermodulation of carriers so that transponder can be used at its full power |
| C. | Needs high-speed manipulation of bit streams |
| D. | Is less flexible so that channels of widely different capacities cannot used and intermixed |
| Answer» E. | |
| 2. |
Point out the false statement. Launching of geostationary experimental communication satellite has helped India to gain experience in |
| A. | Building, for the time, a body-stabilized geosynchronous communication satellite with its own apogee propulsion and control systems |
| B. | Attitude control and station management operations for a geostationary satellite |
| C. | Building launching rocket Ariane for putting APPLE in orbit |
| D. | Domestic communications on an experimental basis |
| Answer» D. Domestic communications on an experimental basis | |
| 3. |
Which of the following statement regarding link loss for a satellite is wrong? |
| A. | For fixed antenna, it is inversely proportional to |
| B. | 2 |
| C. | For fixed frequency, it is inversely proportional to the product of the antenna aperture areas |
| D. | For a given satellite operating at a given frequency, it is inversely proportional to |
| E. | Loss in down-link is negligible as compared to that in uplink |
| Answer» E. Loss in down-link is negligible as compared to that in uplink | |
| 4. |
The INTELSAT-IV satellite launched in 1974 had two earth coverage antenna and two narrower-angle antennas subtending 4.5 . The signal from narrow-angle antenna was stronger than that from earth- coverage antenna by a factor of |
| A. | 17.34/4.5 |
| B. | 17.34 x 4.5 |
| C. | (17.34/4.5)2 |
| D. | (17.34/4.5)4 |
| Answer» D. (17.34/4.5)4 | |
| 5. |
The present total cost per watt of power generation in geosynchronous orbit is nearly Rs |
| A. | 20 |
| B. | 50 |
| C. | 100 |
| D. | 5 |
| Answer» B. 50 | |
| 6. |
Power received from Sun per m2 surface area of a geosynchronous satellite in nearly __________ watt. |
| A. | 100 |
| B. | 500 |
| C. | 2000 |
| D. | 1000 |
| Answer» E. | |
| 7. |
While keeping the down-link frequency constant, the diameter of a satellite antenna is reduced by half. To offer the same EIRP over the increased coverage area, the RF output power has to be increases by a factor of |
| A. | 2 |
| B. | 4 |
| C. | 8 |
| D. | 16 |
| Answer» C. 8 | |