MCQOPTIONS
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MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Electromagnetic Theory knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Find the load impedance in a quarter line transformer with characteristic impedance of 75 ohm and input impedance of 200 ohm. |
| A. | 28.125 |
| B. | 12.285 |
| C. | 52.185 |
| D. | 85.128 |
| Answer» B. 12.285 | |
| 2. |
THE_REFLECTION_COEFFICIENT_OF_A_PERFECTLY_MATCHED_TRANSMISSION_LINE_IS?$ |
| A. | 1 |
| B. | -1 |
| C. | 0 |
| D. | ‚àû |
| Answer» D. ‚Äö√Ñ√∂‚àö‚Ć‚àö¬™ | |
| 3. |
The quarter wave transformer can be considered as a$ |
| A. | Impedance inverter |
| B. | Impedance doubler |
| C. | Impedance tripler |
| D. | Impedance quadrupler |
| Answer» B. Impedance doubler | |
| 4. |
The_purpose_of_the_transmission_line_equation_is_to$ |
| A. | Find primary parameters |
| B. | Find secondary parameters |
| C. | Find the reflection cofficient |
| D. | Impedance matching |
| Answer» E. | |
| 5. |
Which_transmission_line_is_called_as_one_to_one_transformer? |
| A. | L = λ |
| B. | L = λ/2 |
| C. | L = λ/4 |
| D. | L = λ/8 |
| Answer» C. L = ‚âà√≠¬¨‚Ñ¢/4 | |
| 6. |
Find the load impedance in a quarter line transformer with characteristic impedance of 75 ohm and input impedance of 200 ohm? |
| A. | 28.125 |
| B. | 12.285 |
| C. | 52.185 |
| D. | 85.128 |
| Answer» B. 12.285 | |
| 7. |
Find the characteristic impedance of a quarter wave with input and load impedances given by 50 and 25 respectively. |
| A. | 50 |
| B. | 25 |
| C. | 75 |
| D. | 35.35 |
| Answer» E. | |
| 8. |
The condition for a quarter wave transformer is |
| A. | Zo<sup>2</sup> = Zin ZL |
| B. | Zo = Zin ZL |
| C. | ZL<sup>2</sup> = Zin Zo |
| D. | Zo = Zin |
| Answer» B. Zo = Zin ZL | |
| 9. |
The input impedance of a half wave transmission line with a load impedance of 12.5 ohm is |
| A. | 25 |
| B. | 50 |
| C. | 6.25 |
| D. | 12.5 |
| Answer» E. | |
| 10. |
When the length of the transmission line is same as that of the wavelength, then which condition holds good? |
| A. | Zin = Zo |
| B. | Z = Zo |
| C. | ZL = Zo |
| D. | Zin = ZL |
| Answer» E. | |
| 11. |
The best transmission length for effective transmission of power is |
| A. | L = λ/4 |
| B. | L = λ/8 |
| C. | L = λ/2 |
| D. | L = ‚àû |
| Answer» C. L = ‚âà√≠¬¨‚Ñ¢/2 | |
| 12. |
For an infinite transmission line, the characteristic impedance is given by 50 ohm. Find the input impedance. |
| A. | 25 |
| B. | 100 |
| C. | 2500 |
| D. | 50 |
| Answer» E. | |
| 13. |
Which of the following parameters does not exist in the transmission line equation? |
| A. | R |
| B. | Zo |
| C. | ZL |
| D. | Propagation constant |
| Answer» B. Zo | |