MCQOPTIONS
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MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Antennas knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
On which of the following factors does the overall impedance of the unequal conductor folded dipole depends? |
| A. | Only thickness of conductors |
| B. | Space between conductors |
| C. | Radiation resistance of the dipole |
| D. | Radii, radiation resistance and space between conductors. |
| Answer» E. | |
| 2. |
Which of the following causes the shortening effect on multi conductor folded dipole? |
| A. | Only thickness of conductors |
| B. | Space between conductors |
| C. | Radiation resistance of the dipole |
| D. | Both the radii and radiation resistance |
| Answer» B. Space between conductors | |
| 3. |
For a multi conductor folded dipole with n conductors, the impedance is ____ . |
| A. | 2<sup>n</sup> Z |
| B. | nZ |
| C. | n<sup>2</sup>Z |
| D. | Z/n |
| Answer» D. Z/n | |
| 4. |
If the radii of two conductors are r1 (feed arm), r2 (non feed arm) and separated by a distance,then the impedance transformation for a half folded dipole is given by _______ |
| A. | ( left(1+ frac{log u2061( frac{a}{r1})}{log u2061( frac{a}{r2})} right)^2 ) |
| B. | (73 left(1+ frac{log u2061( frac{a}{r1})}{log u2061( frac{a}{r2})} right)^2 ) |
| C. | ( left(1+ frac{log u2061( frac{a}{r2})}{log u2061( frac{a}{r1})} right)^2 ) |
| D. | (73 left(1+ frac{log u2061( frac{a}{r2})}{log u2061( frac{a}{r1})} right)^2 ) |
| Answer» C. ( left(1+ frac{log u2061( frac{a}{r2})}{log u2061( frac{a}{r1})} right)^2 ) | |
| 5. |
In unequal conductor folded dipole, the diameter of the conductor of feed arm and the non feed arm are unequal. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
In which of the following type of folded dipole the number of conductors is varied? |
| A. | Multi conductor folded dipole |
| B. | Unequal conductor folded dipole |
| C. | Both multi conductor and unequal conductor |
| D. | Neither multi conductor nor unequal conductor |
| Answer» B. Unequal conductor folded dipole | |
| 7. |
A half wave folded dipole of 3 wires has the impedance _____ . |
| A. | 675 |
| B. | 657 |
| C. | 219 |
| D. | 292 |
| Answer» C. 219 | |
| 8. |
What is the input impedance of a half wave folded dipole? |
| A. | 73 |
| B. | 292 |
| C. | 146 |
| D. | 36.5 |
| Answer» C. 146 | |
| 9. |
Folded dipole antenna belongs to which type of antenna? |
| A. | Reflector |
| B. | Aperture |
| C. | Lens |
| D. | Wire |
| Answer» E. | |