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. |
What is the resistive load if SWR= 3.05 and Zo =75Ω? |
| A. | 1.23Ω |
| B. | 51.23Ω |
| C. | 254.2Ω |
| D. | 24.59Ω |
| Answer» E. | |
| 2. |
What percentage of power is reflected if the reflection coefficient is 0.5? |
| A. | 50% |
| B. | 75% |
| C. | 25% |
| D. | 12% |
| Answer» D. 12% | |
| 3. |
What is the reflection coefficient If a line is terminated in its characteristic impedance? |
| A. | 0 |
| B. | Infinity |
| C. | 2 |
| D. | 0.5 |
| Answer» B. Infinity | |
| 4. |
The ratio of the incident voltage wave Vi to the reflected voltage wave Vr is called the reflection coefficient. |
| A. | True |
| B. | False |
| Answer» C. | |
| 5. |
What is the Standing wave ratio if a 75Ω antenna load is connected to a 50Ω transmission line? |
| A. | 1 |
| B. | 2 |
| C. | 1.5 |
| D. | 1.43 |
| Answer» D. 1.43 | |
| 6. |
WHAT_IS_THE_REFLECTION_COEFFICIENT_IF_A_LINE_IS_TERMINATED_IN_ITS_CHARACTERISTIC_IMPEDANCE??$ |
| A. | 0 |
| B. | Infinity |
| C. | 2 |
| D. | 0.5 |
| Answer» B. Infinity | |
| 7. |
What is the resistive load if SWR= 3.05 and Zo =75Ω?$# |
| A. | 1.23Ω |
| B. | 51.23Ω |
| C. | 254.2Ω |
| D. | 24.59Ω |
| Answer» E. | |
| 8. |
What_percentage_of_power_is_reflected_if_the_reflection_coefficient_is_0.5?$ |
| A. | 50% |
| B. | 75% |
| C. | 25% |
| D. | 12% |
| Answer» D. 12% | |
| 9. |
The ratio of the incident voltage wave Vi to the reflected voltage wave Vr is called the reflection coefficient? |
| A. | True |
| B. | False |
| Answer» C. | |
| 10. |
What is the Standing wave ratio if a 75Ω antenna load is connected to a 50Ω transmission line?$ |
| A. | 1 |
| B. | 2 |
| C. | 1.5 |
| D. | 1.43 |
| Answer» D. 1.43 | |
| 11. |
In an unmatched line the actual signal on the line is ___________ |
| A. | The sum of forward and reflected signals |
| B. | The difference of forward and reflected signals |
| C. | The product of forward and reflected signals |
| D. | The modulus of forward signal |
| Answer» B. The difference of forward and reflected signals | |
| 12. |
How would the graph of wavelength vs voltage look like if the transmission line is matched (neglect resistive loss)? |
| A. | Linearly increasing |
| B. | Linearly decreasing |
| C. | Exponentially decreasing |
| D. | Constant |
| Answer» E. | |
| 13. |
The transmission line in which the resistive impedance is equal to the characteristic impedance is called _____ |
| A. | Matched lines |
| B. | Paralleled lines |
| C. | Balanced lines |
| D. | Unbalanced lines |
| Answer» B. Paralleled lines | |
| 14. |
What is the load on a transmission line? |
| A. | 0 Ω |
| B. | Infinity |
| C. | Some value between 0 and infinity |
| D. | Some value between0 and 1 |
| Answer» D. Some value between0 and 1 | |
| 15. |
Which of the following is not true regarding standing wave? |
| A. | In a standing wave the energy moves towards the power source |
| B. | In a standing wave power loss occurs |
| C. | Standing waves do not affect signal strength |
| D. | Standing waves are not desirable |
| Answer» D. Standing waves are not desirable | |
| 16. |
Which of the following does not cause standing waves? |
| A. | Short circuit |
| B. | Open circuit |
| C. | High frequency high power signal |
| D. | Impedance is not matched |
| Answer» D. Impedance is not matched | |