MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Avionics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the length of the shortest element in the yagi antenna? |
| A. | One quarter the wavelength of the highest frequency |
| B. | One quarter the wavelength of the lowest frequency |
| C. | One half the wavelength of the highest frequency |
| D. | One half the wavelength of the lowest frequency |
| Answer» D. One half the wavelength of the lowest frequency | |
| 2. |
Which of the following is not one of the types of driven array antenna? |
| A. | Rectilinear antenna |
| B. | Broadside antenna |
| C. | End fire antenna |
| D. | log periodic antenna |
| Answer» B. Broadside antenna | |
| 3. |
Why is the boom of the yagi antenna connected to a metal mast and electrical ground? |
| A. | Better signal directivity |
| B. | Increased bandwidth |
| C. | Lightning protection |
| D. | To avoid short circuiting |
| Answer» D. To avoid short circuiting | |
| 4. |
Parasitic element that is typically about 5 percent longer than the half-wave dipole-driven element is called _______ |
| A. | Array element |
| B. | Director element |
| C. | Reflector element |
| D. | Driven element |
| Answer» D. Driven element | |
| 5. |
In a parasitic array the elements are shorted if they are connected to a conducting beam. |
| A. | True |
| B. | False |
| Answer» C. | |
| 6. |
In a parasitic array antenna, the conductors that are not connected to the transmission line is called as? |
| A. | Driven element |
| B. | Parasitic elements |
| C. | Extra elements |
| D. | Array elements |
| Answer» C. Extra elements | |
| 7. |
Why is top hat added to antennas? |
| A. | To increase capacitance |
| B. | Increasing the antenna gain |
| C. | Sideband suppression |
| D. | Increasing the range of the antenna |
| Answer» B. Increasing the antenna gain | |
| 8. |
What is the use of loading coil? |
| A. | Correcting resonance to a desired frequency |
| B. | Increasing the antenna gain |
| C. | Sideband suppression |
| D. | Increasing the range of the antenna |
| Answer» B. Increasing the antenna gain | |