MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Antennas knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the value of the effective radius factor k of earth if the radius of curvature and the earth radius equals? |
| A. | 1 |
| B. | 0 |
| C. | Infinity |
| D. | 4/3 |
| Answer» D. 4/3 | |
| 2. |
The radio horizon can be equal to the LOS distance if same height antennas are used. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
Radio horizon is less than LOS distance. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
If the heights of transmitting and receiving antenna are equal then LOS distance is ___ in km. |
| A. | 8.24 h |
| B. | 4.82 h |
| C. | 4.12 h |
| D. | 2.06 h |
| Answer» B. 4.82 h | |
| 5. |
The value of k at which LOS equals to the radio horizon is ___ |
| A. | 1 |
| B. | 0 |
| C. | 3/4 |
| D. | -3/4 |
| Answer» B. 0 | |
| 6. |
Expression for radio horizon in km is ____ |
| A. | (4.12( sqrt{h_t}+ sqrt{h_r}) ) |
| B. | (4.12( sqrt{h_t}- sqrt{h_r}) ) |
| C. | (3.56( sqrt{h_t}+ sqrt{h_r}) ) |
| D. | (3.56( sqrt{h_t}- sqrt{h_r}) ) |
| Answer» D. (3.56( sqrt{h_t}- sqrt{h_r}) ) | |
| 7. |
Expression for the LOS distance is _____ (km) |
| A. | (4.12( sqrt{h_t}+ sqrt{h_r}) ) |
| B. | (4.12( sqrt{h_t}- sqrt{h_r}) ) |
| C. | (3.56( sqrt{h_t}+ sqrt{h_r}) ) |
| D. | (3.56( sqrt{h_t}- sqrt{h_r}) ) |
| Answer» B. (4.12( sqrt{h_t}- sqrt{h_r}) ) | |
| 8. |
Which of the following order is correct? |
| A. | LOS > Radio horizon > Optical horizon |
| B. | Radio horizon < LOS < Optical horizon |
| C. | Radio horizon > Optical horizon > LOS |
| D. | Optical horizon > Radio horizon > LOS |
| Answer» B. Radio horizon < LOS < Optical horizon | |
| 9. |
On which of the following factors does the LOS distance depends? |
| A. | Height of receiving antenna alone |
| B. | Height of transmitting antenna alone |
| C. | Only on height of transmitting and receiving antenna |
| D. | On height of transmitting and receiving antenna and effective earths radius factor k |
| Answer» E. | |
| 10. |
Which of the following statement is defined as line of sight distance? |
| A. | Distance covered by a direct space wave from transmitting to receiving antenna |
| B. | Distance covered by an indirect space wave from transmitting to receiving antenna |
| C. | Distance covered by a direct sky wave from transmitting to receiving antenna |
| D. | Distance covered by an indirect sky wave from transmitting to receiving antenna |
| Answer» B. Distance covered by an indirect space wave from transmitting to receiving antenna | |