MCQOPTIONS
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MCQOPTIONS
This section includes 16 Mcqs, each offering curated multiple-choice questions to sharpen your Avionics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
An Em wave is said to be vertically polarized when the angle between the electrical field and earth is _______ |
| A. | 50° |
| B. | 20° |
| C. | 90° |
| D. | 180° |
| Answer» D. 180° | |
| 2. |
The Far field is also known as ______________ |
| A. | Fresnel zone |
| B. | Fraunhofer zone |
| C. | Maxwell zone |
| D. | Marconi zone |
| Answer» C. Maxwell zone | |
| 3. |
At what distance from the antenna does the far field start? |
| A. | 2 wavelengths |
| B. | 5 wavelengths |
| C. | 10 wavelengths |
| D. | 25 wavelengths |
| Answer» D. 25 wavelengths | |
| 4. |
The fields in the Fresnel zone are radio waves that contain the information transmitted. |
| A. | True |
| B. | False |
| Answer» C. | |
| 5. |
AT_WHAT_DISTANCE_FROM_THE_ANTENNA_DOES_THE_FAR_FIELD_START??$ |
| A. | 2 wavelengths |
| B. | 5 wavelengths |
| C. | 10 wavelengths |
| D. | 25 wavelengths |
| Answer» D. 25 wavelengths | |
| 6. |
An Em wave is said to be vertically polarized when the angle between the electrical field and earth is _______$ |
| A. | 50° |
| B. | 20° |
| C. | 90° |
| D. | 180° |
| Answer» D. 180¬¨¬®‚Äö√†√ª | |
| 7. |
The Far field is also known as ______________$ |
| A. | Fresnel zone |
| B. | Fraunhofer zone |
| C. | Maxwell zone |
| D. | Marconi zone |
| Answer» C. Maxwell zone | |
| 8. |
Which of the following devices assist in using the same antenna for transmission and receiving? |
| A. | Monoplexer |
| B. | Multiplexer |
| C. | Duplexer |
| D. | Switch |
| Answer» D. Switch | |
| 9. |
What happens when a vertical or horizontal polarized antenna receives a circular polarized wave? |
| A. | Gain increases |
| B. | Signal strength increases |
| C. | Signal strength reduces |
| D. | Cannot receive circular polarized waves |
| Answer» D. Cannot receive circular polarized waves | |
| 10. |
The fields in the Fresnel zone are radio waves that contain the information transmitted? |
| A. | True |
| B. | False |
| Answer» C. | |
| 11. |
What is the ratio of the electric field strength of a radiated wave to the magnetic field strength called? |
| A. | Impedance of space |
| B. | Dielectric constant |
| C. | Permittivity |
| D. | Permeability |
| Answer» B. Dielectric constant | |
| 12. |
The radiation from an open line can be increased by bending to which of the following angle? |
| A. | 0° |
| B. | 180° |
| C. | 90° |
| D. | 53.76° |
| Answer» D. 53.76¬¨¬®‚Äö√†√ª | |
| 13. |
What happens to the electric field between two conductors when the permeability of the material between the plates is increased? |
| A. | Field strength increases |
| B. | Field radius decreases |
| C. | Field strength decreases |
| D. | Nothing happens |
| Answer» E. | |
| 14. |
Which of the following is the most necessary for an electric field to exist? |
| A. | Current |
| B. | Potential difference |
| C. | Dielectric material |
| D. | Metal conductor |
| Answer» C. Dielectric material | |
| 15. |
In a current carrying conductor, what happens to the magnetic field produced if the supplied voltage is increased and current is maintained constant? |
| A. | Field strength increases |
| B. | Field radius increases |
| C. | Filed strength decreases |
| D. | Does not change |
| Answer» E. | |
| 16. |
All EM waves propagate at the speed of light irrespective of medium. |
| A. | True |
| B. | False |
| Answer» C. | |