MCQOPTIONS
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MCQOPTIONS
This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Antennas knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
For a feeder length of 0.5λ, which among the following would be the director length? |
| A. | 0.525λ |
| B. | 0.455λ |
| C. | 0.493λ |
| D. | 0.55λ |
| Answer» C. 0.493λ | |
| 2. |
What is the Director length (in feet) for a three element Yagi-Uda array, operating at a frequency 500MHz? |
| A. | 0.91 |
| B. | 1 |
| C. | 2 |
| D. | 0.5 |
| Answer» B. 1 | |
| 3. |
What is the driven length (in feet) for a three element Yagi-Uda array, operating at a frequency 500MHz? |
| A. | 0.95 |
| B. | 0.2 |
| C. | 1 |
| D. | 2 |
| Answer» B. 0.2 | |
| 4. |
What is the reflector length (in feet) for a three element Yagi-Uda array, operating at a frequency 500MHz? |
| A. | 2 |
| B. | 0.2 |
| C. | 1 |
| D. | 0.1 |
| Answer» D. 0.1 | |
| 5. |
If the input impedance of a half wave dipole Yagi-Uda is 73Ω, then input impedance of a half wave folded dipole as driven element is ____ |
| A. | 73Ω |
| B. | 146Ω |
| C. | 36.5Ω |
| D. | 292Ω |
| Answer» E. | |
| 6. |
For a feeder length of 0.5λ, which among the following would be the reflector length? |
| A. | 0.525λ |
| B. | 0.425λ |
| C. | 0.23λ |
| D. | 0.35λ |
| Answer» B. 0.425λ | |
| 7. |
If length of the reflector, driven element, director islr, lde, ld, respectively then the order in the increasing order of their lengths is _____ |
| A. | lr, lde, ld |
| B. | ld, lde, lr |
| C. | lde, lr, ld |
| D. | lr, lde, lde |
| Answer» C. lde, lr, ld | |
| 8. |
What is the approximate distance between directors for a Yagi-Uda antenna operating at frequency 150MHz? |
| A. | 0.4m |
| B. | 1.6m |
| C. | 2m |
| D. | 4.8m |
| Answer» B. 1.6m | |
| 9. |
The distance between directors of Yagi-Uda antenna is ____ |
| A. | 0.2λ |
| B. | 0.49λ |
| C. | 0.52λ |
| D. | 0.62λ |
| Answer» B. 0.49λ | |
| 10. |
The length of the reflector compared to the driven element is ______ |
| A. | Greater |
| B. | Smaller |
| C. | Independent to each other |
| D. | Depends on the type of driven element |
| Answer» B. Smaller | |
| 11. |
The length of the director compared to the driven element is ______ |
| A. | Greater |
| B. | Smaller |
| C. | Independent to each other |
| D. | Depends on the type of driven element |
| Answer» C. Independent to each other | |