MCQOPTIONS
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MCQOPTIONS
This section includes 15 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. |
A short transmission line stub can be used to provide a shunt capacitance of: |
| A. | 0-0.1µF |
| B. | 0-0.1pF |
| C. | 0-0.1nF |
| D. | 1-10pF |
| Answer» C. 0-0.1nF | |
| 2. |
Large values of inductance can be realized by: |
| A. | loop of transmission line |
| B. | spiral inductor |
| C. | coils of wires |
| D. | none of the mentioned |
| Answer» C. coils of wires | |
| 3. |
An ‘L’ network is required to match a load impedance of 40Ω to a transmission line of characteristic impedance 60Ω. The components of the L network are: |
| A. | 28.28+j0 Ω |
| B. | 28.28+j1 Ω |
| C. | 50Ω |
| D. | 48.9Ω |
| Answer» B. 28.28+j1 Ω | |
| 4. |
The major limitation of a lumped elements matching ‘L’ network is: |
| A. | they are not equally efficient at higher frequencies as they are at lower frequencies. |
| B. | size of the network |
| C. | they restrict flow of current |
| D. | none of the mentioned |
| Answer» B. size of the network | |
| 5. |
LARGE_VALUES_OF_INDUCTANCE_CAN_BE_REALIZED_BY:?$ |
| A. | loop of transmission line |
| B. | spiral inductor |
| C. | coils of wires |
| D. | none of the mentioned |
| Answer» C. coils of wires | |
| 6. |
A short transmission line stub can be used to provide a shunt capacitance of:$ |
| A. | 0-0.1µF |
| B. | 0-0.1pF |
| C. | 0-0.1nF |
| D. | 1-10pF |
| Answer» C. 0-0.1nF | |
| 7. |
Which of the following material is not used in the fabrication of resistors of thin films? |
| A. | nichrome |
| B. | tantalum nitride |
| C. | doped semiconductor |
| D. | pure silicon |
| Answer» E. | |
| 8. |
The imaginary part of the matching network is given by the relation: |
| A. | ±(√(Z<sub>0</sub>– R<sub>L</sub>)/R<sub>L</sub>)Z0<sub>0</sub> |
| B. | ±(√(Z<sub>0</sub>– R<sub>L</sub>)/R<sub>L</sub>) |
| C. | ±(√(Z<sub>0</sub>– R<sub>L</sub>)/ Z<sub>0</sub> |
| D. | None of the mentioned |
| Answer» B. ¬¨¬®¬¨¬±(‚Äö√Ñ√∂‚àö‚Ć‚àö‚àÇ(Z<sub>0</sub>‚Äö√Ñ√∂‚àö√ë‚àö¬® R<sub>L</sub>)/R<sub>L</sub>) | |
| 9. |
An ‘L’ network is required to match a load impedance of 40Ω to a transmission line of characteristic impedance 60Ω. The components of the L network are:$ |
| A. | 28.28+j0 Ω |
| B. | 28.28+j1 Ω |
| C. | 50Ω |
| D. | 48.9Ω |
| Answer» B. 28.28+j1 ‚âà√≠¬¨¬© | |
| 10. |
The major limitation of a lumped elements matching ‘L’ network is:$ |
| A. | they are not equally efficient at higher frequencies as they are at lower frequencies. |
| B. | size of the network |
| C. | they restrict flow of current |
| D. | none of the mentioned |
| Answer» B. size of the network | |
| 11. |
The simplest type of matching network, L section consists of _______ reactive elements. |
| A. | one |
| B. | two |
| C. | four |
| D. | six |
| Answer» C. four | |
| 12. |
One of the most important factors to be considered in the selection of a particular matching network is: |
| A. | noise component |
| B. | amplification factor |
| C. | bandwidth |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 13. |
Impedance matching sensitive receiver components may improve the _____ of the system. |
| A. | noise |
| B. | SNR |
| C. | amplification factor |
| D. | thermal noise |
| Answer» C. amplification factor | |
| 14. |
When a transmission line is matched to a load using a matched network, reflected waves are present: |
| A. | between the load and the matched network |
| B. | between the matched network and the transmission line |
| C. | between the source and the transmission line |
| D. | between the matched network and source |
| Answer» B. between the matched network and the transmission line | |
| 15. |
The matched network is placed between: |
| A. | load and transmission line |
| B. | source and the transmission line |
| C. | source and the load |
| D. | none of the mentioned |
| Answer» B. source and the transmission line | |