MCQOPTIONS
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MCQOPTIONS
This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Microwave Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
If a transmission line of z =50 is matched using /4 transmission line of z =100 , then the transmission co efficient T is: |
| A. | 1 |
| B. | 0.6667 |
| C. | 1.3333 |
| D. | 2 |
| Answer» C. 1.3333 | |
| 2. |
When a transmission line of characteristic impedance(50 ) z is matched to a load by a /4 transmission line of characteristic impedance 100 , then the transmission co efficient is: |
| A. | 1.5 |
| B. | 0.5 |
| C. | 1.333 |
| D. | 2 |
| Answer» D. 2 | |
| 3. |
If the reflection co-efficient of a transmission line is 0.334 with a characteristic impedance of 50 then the input impedance of the transmission line is: |
| A. | 100 |
| B. | 50 |
| C. | 150 |
| D. | None of the mentioned |
| Answer» B. 50 | |
| 4. |
For a transmission line , if the input impedance of the transmission line is 100 with a characteristic impedance of 150 , then the magnitude of the reflection co efficient: |
| A. | 0.5 |
| B. | 1 |
| C. | 0.2 |
| D. | 0 |
| Answer» D. 0 | |
| 5. |
When a /4 transmission line is used for impedance matching, then which of the following is valid? |
| A. | Standing waves are present on the /4 transmission line |
| B. | No standing waves on the /4 transmission line |
| C. | Standing waves are not present both on the feed line and the matching /4 line |
| D. | Standing waves are present on both the feed line and the matching /4 line |
| Answer» B. No standing waves on the /4 transmission line | |
| 6. |
Expression for the characteristic impedance of a transmission line( /4) used for impedance matching is: |
| A. | Z<sub>1</sub>= (Z R)L |
| B. | Z<sub>1</sub>= (Z /R)L |
| C. | Z<sub>1</sub>= (Z +R)L |
| D. | None of the mentioned |
| Answer» B. Z<sub>1</sub>= (Z /R)L | |
| 7. |
If a /4 transmission line is 100 is used to match a transmission line to a load of 100 , then the characteristic impedance of the transmission line is: |
| A. | 100 |
| B. | 50 |
| C. | 70.71 |
| D. | 200 |
| Answer» B. 50 | |
| 8. |
If a transmission line of characteristic impedance 50 is to be matched to a load of 100 , then the characteristic impedance of the /4 transmission line to be used is: |
| A. | 70.71 |
| B. | 50 |
| C. | 100 |
| D. | 75 |
| Answer» B. 50 | |