MCQOPTIONS
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MCQOPTIONS
This section includes 9 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. |
For N- element linear uniform array, the normalized array factor is represented as ______________ |
| A. | \(\frac{sin(Nᴪ/2)}{Nᴪ/2}\) |
| B. | \(\frac{cos(Nᴪ/2)}{Nᴪ/2}\) |
| C. | \(N\frac{sin(ᴪ/2)}{ᴪ/2}\) |
| D. | \(N\frac{cos(Nᴪ/2)}{Nᴪ/2}\) |
| Answer» B. \(\frac{cos(Nᴪ/2)}{Nᴪ/2}\) | |
| 2. |
Find the angle at which nulls occur for the two element array antenna with separation λ/4 and phase difference is 0? |
| A. | Doesn’t exist |
| B. | 0 |
| C. | π/2 |
| D. | π/4 |
| Answer» B. 0 | |
| 3. |
Find the angle at which nulls occur for the two element array antenna with separation λ/4 and phase difference is -π/2? |
| A. | 0 |
| B. | π/2 |
| C. | π/4 |
| D. | π |
| Answer» E. | |
| 4. |
Find the angle at which nulls occur for the two element array antenna with separation λ/4 and phase difference is π/2? |
| A. | 0 |
| B. | π/2 |
| C. | π/4 |
| D. | π |
| Answer» B. π/2 | |
| 5. |
Multiplying the normalized field with the normalized array factor gives ___________ |
| A. | pattern multiplication |
| B. | array factor |
| C. | beamwidth |
| D. | null |
| Answer» B. array factor | |
| 6. |
Which of the following is true for uniform linear array elements, to obtain the total field? |
| A. | The single element field is multiplied by the array factor |
| B. | The single element field is multiplied by the normalized array factor |
| C. | The single element field is multiplied by the beamwidth |
| D. | The single element field is multiplied by the directivity |
| Answer» B. The single element field is multiplied by the normalized array factor | |
| 7. |
Find the normalized Array factor when two antenna elements are separated by a distance of λ/4 and phase difference is 0 and θ=0? |
| A. | \(cos(\frac{π}{4})\) |
| B. | \(cos(\frac{π}{2})\) |
| C. | \(cos(\frac{3π}{4})\) |
| D. | \(cos(\frac{3π}{2})\) |
| Answer» B. \(cos(\frac{π}{2})\) | |
| 8. |
Which of the following is a function of position of antennas in array and the weights? |
| A. | Array Factor |
| B. | Field pattern |
| C. | Total array field |
| D. | Beamwidth |
| Answer» B. Field pattern | |
| 9. |
The normalized array factor of a two element array antenna is given by ___________ |
| A. | \(AF_n=cos(\frac{kdcosθ+β}{2})\) |
| B. | \(AF_n=2cos(\frac{kdcosθ+β}{2})\) |
| C. | \(AF_n=cos(\frac{kdcosθ}{2}+β)\) |
| D. | \(AF_n=cos(\frac{kdsinθ+β}{2})\) |
| Answer» B. \(AF_n=2cos(\frac{kdcosθ+β}{2})\) | |