MCQOPTIONS
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MCQOPTIONS
This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Antennas knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The Upper ray is stronger than the lower ray and is mostly preferred for communication. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
Which of the following propagation is used when the receiver is beyond the skip distance? |
| A. | Single hop |
| B. | Single hop multi layer |
| C. | Multi hop |
| D. | Ground wave |
| Answer» D. Ground wave | |
| 3. |
Find the take-off angle for the flat earth surface with θi = 75. |
| A. | 15 |
| B. | 30 |
| C. | 105 |
| D. | 75 |
| Answer» B. 30 | |
| 4. |
Calculate the skip distance for the flat earth when a wave is reflected in an ionosphere at a height of 100km at a take-off angle 10°. |
| A. | 172km |
| B. | 35.26km |
| C. | 17.25km |
| D. | 35.26m |
| Answer» C. 17.25km | |
| 5. |
The take-off angle for the curved earth surface is given by ____ |
| A. | β = 90 – θi – 57.3d/2R |
| B. | β = 180 – θi |
| C. | β = 180 – θi – 57.3d/2R |
| D. | β = 90 – θi |
| Answer» B. β = 180 – θi | |
| 6. |
The propagation of wave from transmitter to receiver by touching ground in between them and goes through different layers is called _____ |
| A. | Multi-hop single layer |
| B. | Single hop multi layer |
| C. | Multi hop multi layer |
| D. | Single hop single layer |
| Answer» D. Single hop single layer | |
| 7. |
The propagation of wave from transmitter to receiver without touching the ground is called as ___ |
| A. | Single hop distance |
| B. | Virtual height |
| C. | Actual height |
| D. | Multi-hop |
| Answer» B. Virtual height | |