MCQOPTIONS
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MCQOPTIONS
This section includes 8 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 Balun to work effectively, it must have ____ impedance for common mode currents and ____ impedance for differential mode current. |
| A. | high, low |
| B. | low, high |
| C. | high, high |
| D. | low, low |
| Answer» B. low, high | |
| 2. |
Reciprocity applies to which of the following devices? |
| A. | Isolator |
| B. | Circulator |
| C. | Balun |
| D. | RF amplifiers |
| Answer» D. RF amplifiers | |
| 3. |
Type II Balun has two Type I balloons in series providing more bandwidth and load impedances at all frequencies. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
Which of the following Balun contains a sliding short circuit bar for frequency adjustment? |
| A. | Type 1 |
| B. | Sleeve Balun |
| C. | Type 2 |
| D. | Type 3 |
| Answer» E. | |
| 5. |
In which of the following Balun we don t choke the current? |
| A. | Sleeve Balun |
| B. | Folded Balun |
| C. | Tapered Balun |
| D. | Infinite Balun |
| Answer» E. | |
| 6. |
Which of the following Balun changes the shape of the unbalanced transmission line to that of a balanced transmission line? |
| A. | Sleeve Balun |
| B. | Folded Balun |
| C. | Tapered Balun |
| D. | Infinite Balun |
| Answer» D. Infinite Balun | |
| 7. |
Consider a 9:1 Balun (unbalanced to balance conversion); if the unbalanced impedance is R then the balanced impedance will be _____ . |
| A. | 9R |
| B. | 3R |
| C. | 0.11R |
| D. | 0.45R |
| Answer» B. 3R | |
| 8. |
Which of the following statement is false regarding Type-1 Sleeve Balun? |
| A. | It is shorted at the base |
| B. | It has a /4 sleeve |
| C. | It has a /2 sleeve |
| D. | Ideally it provides infinite impedance at top |
| Answer» D. Ideally it provides infinite impedance at top | |