MCQOPTIONS
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MCQOPTIONS
This section includes 11 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. |
____________ uses balanced input and output, meaning that there are 2 signal lines, with opposite polarity at each port. |
| A. | differential amplifier |
| B. | distributed amplifier |
| C. | balanced amplifier |
| D. | none of the mentioned |
| Answer» B. distributed amplifier | |
| 2. |
ALONG_WITH_A_DIFFERENTIAL_AMPLIFIER,_1800_HYBRID_IS_USED_BOTH_AT_THE_INPUT_AND_OUTPUT.?$ |
| A. | true |
| B. | false |
| Answer» B. false | |
| 3. |
A_MAJOR_ADVANTAGE_OF_DIFFERENTIAL_AMPLIFIERS_IS:?$ |
| A. | high gain |
| B. | low input impedance |
| C. | higher output voltage swing |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 4. |
____________ uses balanced input and output, meaning that there are 2 signal lines, with opposite polarity at each port? |
| A. | differential amplifier |
| B. | distributed amplifier |
| C. | balanced amplifier |
| D. | none of the mentioned |
| Answer» B. distributed amplifier | |
| 5. |
In distributed amplifiers, all the FET stages in the amplifier are connected in series to one another. |
| A. | true |
| B. | false |
| Answer» C. | |
| 6. |
Distributed amplifiers offer very high _________ |
| A. | gain |
| B. | bandwidth |
| C. | attenuation |
| D. | none of the mentioned |
| Answer» C. attenuation | |
| 7. |
Coupler that is mostly used in balanced amplifiers to achieve the required performance is: |
| A. | branch line coupler |
| B. | wilkinson coupler |
| C. | lange coupler |
| D. | waveguide coupler |
| Answer» D. waveguide coupler | |
| 8. |
Bandwidth of balanced amplifier can be an octave or more, but is limited by the bandwidth of the coupler. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 9. |
In conventional amplifiers, a flat gain response is achieved at the cost of reduced gain. But this drawback can be overcome by using: |
| A. | balanced amplifiers |
| B. | distributed amplifiers |
| C. | differential amplifiers |
| D. | none of the mentioned |
| Answer» B. distributed amplifiers | |
| 10. |
To flatten the gain response of a transistor: |
| A. | biasing current has to be increased |
| B. | input signal level has to increased |
| C. | increase the operational bandwidth |
| D. | give negative feedback to the amplifier |
| Answer» E. | |
| 11. |
High gain is not achievable at microwave frequencies using BJT amplifiers because: |
| A. | device construction |
| B. | complex architecture |
| C. | ports are not matched at high frequencies |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |