MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Antennas knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The value at which the second null occurs in H-plane of rectangular aperture of a*b is given by ____ |
| A. | sin<sup>-1</sup> u2061(2 /a) |
| B. | sin<sup>-1</sup> u2061( /a) |
| C. | sin<sup>-1</sup> u2061(a/2 ) |
| D. | sin<sup>-1</sup> u2061(a/ ) |
| Answer» B. sin<sup>-1</sup> u2061( /a) | |
| 2. |
Find the HPBW of the uniform rectangular aperture antenna with 4 2 in the E-plane? |
| A. | 0.443 |
| B. | 0.886 |
| C. | 0.25 |
| D. | 0.5 |
| Answer» B. 0.886 | |
| 3. |
Half-power Beam width in E-plane for a rectangular aperture antenna of a b is given by ____ |
| A. | 0.886 /b |
| B. | 0.443 /b |
| C. | 0.5 /b |
| D. | /b |
| Answer» B. 0.443 /b | |
| 4. |
Larger the size of the aperture, the narrower is the Beam-widths. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
The first null beam width in the E-plane of a rectangular aperture of a b is given by _______________ |
| A. | 2sin<sup>-1</sup> u2061( /b) |
| B. | sin<sup>-1</sup> u2061( /a) |
| C. | 2sec<sup>-1</sup> u2061( /b) |
| D. | 2cos<sup>-1</sup> u2061( /a) |
| Answer» B. sin<sup>-1</sup> u2061( /a) | |
| 6. |
For a rectangular aperture of a*b the first null in E-plane occur at _______ |
| A. | sin<sup>-1</sup> u2061( /b) |
| B. | sec<sup>-1</sup> u2061( /b) |
| C. | cos<sup>-1</sup> u2061( /a) |
| D. | sin<sup>-1</sup> u2061( /a) |
| Answer» B. sec<sup>-1</sup> u2061( /b) | |
| 7. |
If the antenna dimension is two times the wavelength of the signal then the First null beam width will be _____ |
| A. | 35 |
| B. | 140 |
| C. | 70 |
| D. | 280 |
| Answer» D. 280 | |
| 8. |
For a circular aperture the FNBW is ______ |
| A. | 140 /D |
| B. | 70 /D |
| C. | 140D/ |
| D. | 70D/ |
| Answer» B. 70 /D | |
| 9. |
If the antenna dimension is two times the wavelength of the signal then the half power beam width will be _____ |
| A. | 35 |
| B. | 140 |
| C. | 70 |
| D. | 280 |
| Answer» B. 140 | |
| 10. |
Half-power Beamwidth is given by ____ |
| A. | 70 /D |
| B. | 70D/ |
| C. | 35 /D |
| D. | 35D/ |
| Answer» B. 70D/ | |