MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Analog Communications knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Arrays in antenna can be __________ |
| A. | phased |
| B. | driven |
| C. | parasitic |
| D. | phased, driven or parasitic |
| Answer» E. | |
| 2. |
The radiated beam from a parabolic “dish” transmitting antenna is ________ |
| A. | dispersed |
| B. | refracted |
| C. | collimated |
| D. | scattered |
| Answer» D. scattered | |
| 3. |
ARRAYS_IN_ANTENNA_CAN_BE___________?$ |
| A. | phased |
| B. | driven |
| C. | parasitic |
| D. | phased, driven or parasitic |
| Answer» E. | |
| 4. |
What is the full form of LPDA? |
| A. | Log Periodic Dipole Array |
| B. | Log Periodic Dispersed Array |
| C. | Low Periodic Dispersed Array |
| D. | Low Power Dipole Array |
| Answer» B. Log Periodic Dispersed Array | |
| 5. |
The radiated beam from a parabolic “dish” transmitting antenna is ________$ |
| A. | dispersed |
| B. | refracted |
| C. | collimated |
| D. | scattered |
| Answer» D. scattered | |
| 6. |
Field strength at a distance from an antenna is measured with __________ |
| A. | a slotted line |
| B. | a dipole |
| C. | an EIRP meter |
| D. | a field strength meter |
| Answer» E. | |
| 7. |
An ungrounded antenna near the ground ________ |
| A. | must be horizontally polarized |
| B. | acts as an antenna array |
| C. | is unlikely to need a ground screen |
| D. | acts as a single antenna of twice the height |
| Answer» C. is unlikely to need a ground screen | |
| 8. |
Which of the following antennas is best excited from a waveguide? |
| A. | Marconi |
| B. | Horn |
| C. | Helical |
| D. | Discone |
| Answer» C. Helical | |
| 9. |
Which one of the following reasons for the use of a ground screen with antennas is false? |
| A. | Impossibility of a good ground connection |
| B. | Provision of an earth for the antenna |
| C. | Protection of personnel working underneath |
| D. | Improvement of radiation pattern of antenna |
| Answer» D. Improvement of radiation pattern of antenna | |
| 10. |
Which is the standard reference antenna for the directive gain? |
| A. | Isotropic antenna |
| B. | Marconi antenna |
| C. | Helical antenna |
| D. | Log Periodic antenna |
| Answer» B. Marconi antenna | |