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. |
A parabolic reflector used for reception with the direct broadcast system is 18 inches in diameter and operates at 12.4 GHz. The far-field distance for this antenna is:a) 18 mb) 13 mc) 16.4 md) 17.3 m 6._________ of an antenna is a plot of the magnitude of the far field strength versus position around the antenna. |
| A. | 18 mb) 13 mc) 16.4 md) 17.3 m 6._________ of an antenna is a plot of the magnitude of the far field strength versus position around the antenna.a) Radiation pattern |
| B. | 13 mc) 16.4 md) 17.3 m 6._________ of an antenna is a plot of the magnitude of the far field strength versus position around the antenna.a) Radiation patternb) Directivity |
| C. | 16.4 md) 17.3 m 6._________ of an antenna is a plot of the magnitude of the far field strength versus position around the antenna.a) Radiation patternb) Directivityc) Beam width |
| D. | 17.3 m 6._________ of an antenna is a plot of the magnitude of the far field strength versus position around the antenna.a) Radiation patternb) Directivityc) Beam widthd) None of the mentionedView Answer |
| Answer» E. | |
| 2. |
IF_THE_BEAM_WIDTH_OF_AN_ANTENNA_IN_TWO_ORTHOGONAL_PLANES_ARE_300_AND_600._THEN_THE_DIRECTIVITY_OF_THE_ANTENNA_IS:?$ |
| A. | 24 |
| B. | 18 |
| C. | 36 |
| D. | 12 |
| Answer» C. 36 | |
| 3. |
If_the_power_input_to_an_antenna_is_100_mW_and_if_the_radiated_power_is_measured_to_be_90_mW,_then_the_efficiency_of_the_antenna_is:$ |
| A. | 75 % |
| B. | 80 % |
| C. | 90 % |
| D. | Insufficient data |
| Answer» D. Insufficient data | |
| 4. |
Beamwidth and directivity are both measures of the focusing ability of an antenna? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
Antennas having a constant pattern in the azimuthal plane are called _____________ |
| A. | High gain antenna |
| B. | Omni directional antenna |
| C. | Unidirectional antenna |
| D. | Low gain antenna |
| Answer» C. Unidirectional antenna | |
| 6. |
_________ of an antenna is a plot of the magnitude of the far field strength versus position around the antenna. |
| A. | Radiation pattern |
| B. | Directivity |
| C. | Beam width |
| D. | None of the mentioned |
| Answer» B. Directivity | |
| 7. |
A parabolic reflector used for reception with the direct broadcast system is 18 inches in diameter and operates at 12.4 GHz. The far-field distance for this antenna is: |
| A. | 18 m |
| B. | 13 m |
| C. | 16.4 m |
| D. | 17.3 m |
| Answer» E. | |
| 8. |
_________ antennas consist of a regular arrangement of antenna elements with a feed network |
| A. | Aperture antennas |
| B. | Array antennas |
| C. | Printed antennas |
| D. | Wire antennas |
| Answer» C. Printed antennas | |
| 9. |
Dipole antennas are an example for: |
| A. | Wire antennas |
| B. | Aperture antennas |
| C. | Array antennas |
| D. | None of the mentioned |
| Answer» B. Aperture antennas | |
| 10. |
Antennas are bidirectional devices. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 11. |
A __________ is a device that converts a guided electromagnetic wave on a transmission line into a plane wave propagating in free space. |
| A. | Transmitting antenna |
| B. | Receiving antenna |
| C. | Radar |
| D. | Mixer |
| Answer» B. Receiving antenna | |