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. |
An antenna has a field pattern E (θ) =cos θ. cos 2θ. The first null beam width of the antenna is: |
| A. | 450 |
| B. | 900 |
| C. | 1800 |
| D. | 1200 |
| Answer» C. 1800 | |
| 2. |
An antenna has a field pattern of E (θ) = cos2 θ, θ varies between 0 and 900. Half power beam width of the antenna is: |
| A. | 330 |
| B. | 660 |
| C. | 12000 |
| D. | None of the mentioned |
| Answer» C. 12000 | |
| 3. |
When the separation between two lines that carry the TEM wave approaches λ the wave tends to be radiated. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
THE_SOLID_AREA_THROUGH_WHICH_ALL_THE_POWER_RADIATED_BY_THE_ANTENNA_IS:?$ |
| A. | Beam area |
| B. | Effective area |
| C. | Aperture area |
| D. | Beam efficiency |
| Answer» B. Effective area | |
| 5. |
Power_radiated_from_an_antenna_per_unit_solid_angle_is_called_radiation_intensity.$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
An antenna has a field pattern E (θ) =cos θ. cos 2θ. The first null beam width of the antenna is?# |
| A. | 45<sup>0</sup> |
| B. | 90<sup>0</sup> |
| C. | 180<sup>0</sup> |
| D. | 120<sup>0</sup> |
| Answer» C. 180<sup>0</sup> | |
| 7. |
An antenna has a field pattern of E (θ) = cos2 θ, θ varies between 0 and 900. Half power beam width of the antenna is:$ |
| A. | 33<sup>0</sup> |
| B. | 66<sup>0</sup> |
| C. | 1200<sup>0</sup> |
| D. | None of the mentioned |
| Answer» C. 1200<sup>0</sup> | |
| 8. |
The beam width of the antenna pattern measured at half power points is called: |
| A. | Half power beam width |
| B. | Full null beam width |
| C. | Beam width |
| D. | None of the mentioned |
| Answer» B. Full null beam width | |
| 9. |
The number of patterns radiation pattern required to specify the characteristic are : |
| A. | Three |
| B. | Four |
| C. | Two |
| D. | Five |
| Answer» B. Four | |
| 10. |
When the separation between two lines that carry the TEM wave approaches λ the wave tends to be radiated.$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 11. |
The basic equation of radiation that is applied to any antenna irrespective of the type of the antenna is: |
| A. | iL= Qv |
| B. | iQ = Lv |
| C. | i/L=Q/v |
| D. | None of the mentioned |
| Answer» B. iQ = Lv | |
| 12. |
_________ is a device that converts electrons to photons or vice-versa. |
| A. | Antenna |
| B. | Electron gun |
| C. | Photon amplifier |
| D. | Microwave tube |
| Answer» B. Electron gun | |
| 13. |
The basic requirements of transmitting antennas are: |
| A. | High efficiency |
| B. | Low side lobes |
| C. | Large signal to noise ratio |
| D. | Lone of the mentioned |
| Answer» B. Low side lobes | |