MCQOPTIONS
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MCQOPTIONS
This section includes 13 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 ferrite slab produces a phase shift of 0.836 rad/ cm, then the length of the slab required to produce a phase shift of 135⁰ is: |
| A. | 2.81 cm |
| B. | 3 cm |
| C. | 2 cm |
| D. | 3.4 cm |
| Answer» B. 3 cm | |
| 2. |
A gyrator can be made a passive device by certain design methods so that they do not affect the power levels of the circuit in which they are used. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
Ferrite phase shifters have more advantages over FETs and diodes in using them in microwave integrated circuits. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
If a ferrite slab provides a phase shift of 48⁰/ cm, then the length of the ferrite slab required to produce a phase shift of 90⁰ is: |
| A. | 2.44 cm |
| B. | 1.88 cm |
| C. | 4.5 cm |
| D. | 3.5 cm |
| Answer» C. 4.5 cm | |
| 5. |
If a ferrite slab provides a phase shift of 48⁰/ cm, then the length of the ferrite slab required to produce a phase shift of 180⁰ is: |
| A. | 4 cm |
| B. | 3.75 cm |
| C. | 4.5 cm |
| D. | 3.5 cm |
| Answer» C. 4.5 cm | |
| 6. |
A_GYRATOR_CAN_BE_MADE_A_PASSIVE_DEVICE_BY_CERTAIN_DESIGN_METHODS_SO_THAT_THEY_DO_NOT_AFFECT_THE_POWER_LEVELS_OF_THE_CIRCUIT_IN_WHICH_THEY_ARE_USED.?$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
If a ferrite slab produces a phase shift of 0.836 rad/ cm, then the length of the slab required to produce a phase shift of 135‚Äö√Ö‚àû is:$# |
| A. | 2.81 cm |
| B. | 3 cm |
| C. | 2 cm |
| D. | 3.4 cm |
| Answer» B. 3 cm | |
| 8. |
The scattering matrix of a gyrator is: |
| A. | Symmetric |
| B. | Skew symmetric |
| C. | Identity matrix |
| D. | Null matrix |
| Answer» C. Identity matrix | |
| 9. |
Gyrator is a device that produces a phase shift of ____ between the input and output. |
| A. | 90‚Äö√Ö‚àû |
| B. | 180‚Äö√Ö‚àû |
| C. | 45‚Äö√Ö‚àû |
| D. | None of the mentioned |
| Answer» C. 45‚Äö√Ñ√∂‚àö√ñ‚Äö√†√ª | |
| 10. |
If a ferrite slab provides a phase shift of 48‚Äö√Ö‚àû/ cm, then the length of the ferrite slab required to produce a phase shift of 180‚Äö√Ö‚àû is:$ |
| A. | 4 cm |
| B. | 3.75 cm |
| C. | 4.5 cm |
| D. | 3.5 cm |
| Answer» C. 4.5 cm | |
| 11. |
Reciprocal phase shifters give different phase shift in different direction. |
| A. | True |
| B. | False |
| Answer» C. | |
| 12. |
Phase shifters are used in _______ where the antenna beam can be steered in space by electronically controlled phase shifters. |
| A. | Phased array antennas |
| B. | Dipole array antennas |
| C. | Slot antennas |
| D. | Patch antennas |
| Answer» B. Dipole array antennas | |
| 13. |
______ is a device that produces a phase shift of a required amount of the input wave. |
| A. | Phase shifter |
| B. | Attenuator |
| C. | Resonator |
| D. | None of the mentioned |
| Answer» B. Attenuator | |