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 linear and circular polarizations are special cases of elliptical polarization. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
The transmission mode polarization vector and receiving mode polarization vector of antenna polarization are ___________ |
| A. | always equal |
| B. | conjugate to each other |
| C. | negative of conjugate of other |
| D. | inverse of Conjugate of other vector |
| Answer» C. negative of conjugate of other | |
| 3. |
Which of the following is true for the elliptical polarization? |
| A. | E<sub>x</sub>=E<sub>y</sub>, and = /2 |
| B. | E<sub>x</sub> E<sub>y</sub>, and = /2 |
| C. | E<sub>x</sub> E<sub>y</sub>, and = /4 |
| D. | E<sub>x</sub>=E<sub>y</sub>, and = /4 |
| Answer» C. E<sub>x</sub> E<sub>y</sub>, and = /4 | |
| 4. |
Which of the following is true for the circular polarization? |
| A. | E<sub>x</sub>=E<sub>y</sub>, and = /2 |
| B. | E<sub>x</sub> E<sub>y</sub>, and = /2 |
| C. | E<sub>x</sub> E<sub>y</sub>, and = /4 |
| D. | E<sub>x</sub>=E<sub>y</sub>, and = /4 |
| Answer» B. E<sub>x</sub> E<sub>y</sub>, and = /2 | |
| 5. |
The locus traced by the extremity of the time-varying field vector at a fixed observational point is called ________ |
| A. | polarization |
| B. | gain |
| C. | directivity |
| D. | height |
| Answer» B. gain | |
| 6. |
Tilt angle of the elliptic polarization with respect to horizontal is ____________ |
| A. | = (tan^{-1}( frac{a_{vertical}}{a_{horizontal}}) ) |
| B. | = ( frac{a_{horizontal}}{a_{vertical}} ) |
| C. | = (( frac{a_{vertical}}{a_{horizontal}}) ) |
| D. | = (tan^{-1}( frac{a_{horizontal}}{a_{vertical}}) ) |
| Answer» B. = ( frac{a_{horizontal}}{a_{vertical}} ) | |
| 7. |
In which of the following polarization the electric field components are perpendicular to each other and have unequal magnitudes? |
| A. | Linear |
| B. | Vertical |
| C. | Circular |
| D. | Elliptical |
| Answer» E. | |
| 8. |
In which of the following polarization the electric field components are perpendicular to each other and have equal magnitude? |
| A. | Linear |
| B. | Vertical |
| C. | Circular |
| D. | Elliptical |
| Answer» D. Elliptical | |
| 9. |
Which type of polarization is found in parabolic reflector? |
| A. | Right-hand Circular |
| B. | Linear |
| C. | Depends on the feed |
| D. | Left-hand Circular |
| Answer» D. Left-hand Circular | |
| 10. |
Which of the following polarization is used in monopole antenna? |
| A. | Right-hand Circular |
| B. | Linear |
| C. | Depends on the feed |
| D. | Left-hand Circular |
| Answer» C. Depends on the feed | |