MCQOPTIONS
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MCQOPTIONS
This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Antennas knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Relation between beam efficiency and stray factor is given by ____ |
| A. | ∈B+∈s=1 |
| B. | ∈B-∈s=1 |
| C. | \(\frac{\in_B}{\in_s}=1\) |
| D. | ∈B+∈s=2 |
| Answer» B. ∈B-∈s=1 | |
| 2. |
If the antennas revolution time is 10 sec and 3 dB beam width duration is 150ms then the antenna beam width is _______ |
| A. | 5.4° |
| B. | 54° |
| C. | 15° |
| D. | 1.5° |
| Answer» B. 54° | |
| 3. |
If beam efficiency is 0.87 then the stray factor is ____ |
| A. | 1.87 |
| B. | 0.13 |
| C. | 1.30 |
| D. | 0.87 |
| Answer» C. 1.30 | |
| 4. |
Total beam area is sum of major and minor lobe areas. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
If the HPBW is 30° then FNBW is approximately _____ |
| A. | 60° |
| B. | 30° |
| C. | 15° |
| D. | 20° |
| Answer» B. 30° | |
| 6. |
Angular width between the first nulls or first side lobes is called as _______ |
| A. | half power beam width |
| B. | full null beam width |
| C. | beam area |
| D. | directivity |
| Answer» C. beam area | |