MCQOPTIONS
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MCQOPTIONS
This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Antenna Array knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The isotropic element array radiation pattern depends on the nulls of the array factor only. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
The total radiation pattern of a two element array, elements separated by a distance /4 and phase difference ( frac{ }{2}, ) the nulls occur at (for far field) ____________ |
| A. | 0, /2 |
| B. | , /2 |
| C. | , /4 |
| D. | /4, /2 |
| Answer» B. , /2 | |
| 3. |
For two elements array find the radiation pattern of array separated by /4 and phase difference is 0? |
| A. | <img alt="The radiation pattern of array separated by /4 & phase difference is 0 - option a" class="alignnone size-full wp-image-275973" height="176" src="https://www.sanfoundry.com/wp-content/uploads/2020/05/antenna-array-questions-answers-pattern-multiplications-q8a.png" width="169"/> |
| B. | <img alt="The radiation pattern of array separated by /4 & phase difference is 0 - option b" class="alignnone size-full wp-image-275972" height="173" src="https://www.sanfoundry.com/wp-content/uploads/2020/05/antenna-array-questions-answers-pattern-multiplications-q8b.png" width="170"/> |
| C. | <img alt="The radiation pattern of array separated by /4 & phase difference is 0 - option c" class="alignnone size-full wp-image-275971" height="171" src="https://www.sanfoundry.com/wp-content/uploads/2020/05/antenna-array-questions-answers-pattern-multiplications-q8c.png" width="189"/> |
| D. | <img alt="The radiation pattern of array separated by /4 & phase difference is 0 - option d" class="alignnone size-full wp-image-275956" height="201" src="https://www.sanfoundry.com/wp-content/uploads/2020/05/antenna-array-questions-answers-pattern-multiplications-q4d.png" width="211"/> |
| Answer» B. <img alt="The radiation pattern of array separated by /4 & phase difference is 0 - option b" class="alignnone size-full wp-image-275972" height="173" src="https://www.sanfoundry.com/wp-content/uploads/2020/05/antenna-array-questions-answers-pattern-multiplications-q8b.png" width="170"/> | |
| 4. |
Which of the following doesn t applicable for pattern multiplication? |
| A. | It is the product of the individual radiation pattern of the element with the array factor of the array |
| B. | All elements must be identical |
| C. | All elements need not be identical |
| D. | This gives the radiation pattern of the entire array |
| Answer» D. This gives the radiation pattern of the entire array | |
| 5. |
All the elements must be identical to apply pattern multiplication principle. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
Which of the following expression represents the pattern multiplication? |
| A. | E<sub>total</sub>=E<sub> </sub> Array Factor |
| B. | E<sub>total</sub>=E<sub> </sub> Directivity |
| C. | E<sub>total</sub>=E<sub>all elements</sub> Array Factor |
| D. | E<sub>total</sub>=E<sub> </sub> Beamwidth |
| Answer» B. E<sub>total</sub>=E<sub> </sub> Directivity | |
| 7. |
Pattern multiplication is the multiplication of single array radiation pattern with ___ |
| A. | Array Factor |
| B. | Beamwidth |
| C. | Total Field |
| D. | Directivity |
| Answer» B. Beamwidth | |