MCQOPTIONS
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MCQOPTIONS
This section includes 10 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 an unbalanced to balanced signal conversion, if the turn s ratio in a Balun is 1:2 then the balanced impedance is ______ times the unbalanced impedance. |
| A. | 4 |
| B. | 2 |
| C. | ( frac{1}{2} ) |
| D. | ( frac{1}{4} ) |
| Answer» B. 2 | |
| 2. |
The phase difference between the outputs of Balun in frequency domain is ____ |
| A. | 180 |
| B. | 120 |
| C. | 60 |
| D. | 90 |
| Answer» B. 120 | |
| 3. |
Which of the following is false regarding Transformer Balun? |
| A. | It has a narrow band frequency |
| B. | It has infinitely wide band frequency |
| C. | Ideally it provides zero insertion loss |
| D. | Impedance matching is adjusted by its turn ratio |
| Answer» B. It has infinitely wide band frequency | |
| 4. |
Among current Balun and voltage Balun, which works better? |
| A. | Current Balun |
| B. | Voltage Balun |
| C. | Both work equally |
| D. | Depends the power supply |
| Answer» B. Voltage Balun | |
| 5. |
For a 4: 1 Balun, what is the unbalanced impedance if the balanced impedance is 2K ? |
| A. | 8K |
| B. | 0.5K |
| C. | 4K |
| D. | 2K |
| Answer» C. 4K | |
| 6. |
All Baluns provide impedance transformation. |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
A Balun joins a balanced line and an unbalanced line. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
The process of forcing the current at the outer side of the outer conductor to be zero is called _____ |
| A. | Current distribution |
| B. | Current chokes |
| C. | Field effect |
| D. | Impedance chokes |
| Answer» B. Current chokes | |
| 9. |
A Balun is used to make the current along the outer side of the outer conductor along the coaxial cable _______ |
| A. | Zero |
| B. | Maximum |
| C. | Maximum or minimum depends on power supply |
| D. | Infinity |
| Answer» B. Maximum | |
| 10. |
What is a Balun? |
| A. | It is used to balance the unbalanced systems |
| B. | It unbalances the balanced systems |
| C. | A twisted wire |
| D. | Main beam of antenna with large beam width |
| Answer» B. It unbalances the balanced systems | |