MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Antenna Parameters knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The value of maximum power gain is always greater than or equal to the maximum directive gain. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
The radiation efficiency value is ______ |
| A. | 0 |
| B. | 1<η<∞ |
| C. | 0≤η≤1 |
| D. | ∞ |
| Answer» D. ∞ | |
| 3. |
What is the maximum power gain when the radiation resistance is 72Ω, loss resistance is 8Ω and the maximum directive gain is 1.5? |
| A. | 1.15 |
| B. | 1.35 |
| C. | 1.25 |
| D. | 1.53 |
| Answer» C. 1.25 | |
| 4. |
Which of the following represents the relation between maximum power gain and maximum directivity gain of the antenna? |
| A. | Gpmax = ηrGdmax |
| B. | Gpmax = ηr/Gdmax |
| C. | ηr = \(\sqrt{(G_{pmax} G_{dmax})}\) |
| D. | ηr = \(\frac{G_{dmax}+G_{pmax}}{G_{dmax}-G_{pmax}}\) |
| Answer» B. Gpmax = ηr/Gdmax | |
| 5. |
Which of the following expression is correct for radiation efficiency? |
| A. | \(\eta_r = \frac{P_r}{P_l}\) |
| B. | \(\eta_r = \frac{P_r}{P_r-P_l}\) |
| C. | \(\eta_r = \frac{P_r}{P_r+P_l}\) |
| D. | \(\eta_r = \frac{P_l}{P_r+P_l}\) |
| Answer» D. \(\eta_r = \frac{P_l}{P_r+P_l}\) | |
| 6. |
What is the maximum power gain of antenna with radiation efficiency 98% and directive gain 1? |
| A. | 0.98 |
| B. | 1.02 |
| C. | 1.98 |
| D. | 1 |
| Answer» B. 1.02 | |
| 7. |
The ratio of power radiated in a particular direction to the total input power of antenna is called as _____ |
| A. | Directive gain |
| B. | Power gain |
| C. | Directivity |
| D. | Partial directivity |
| Answer» C. Directivity | |