MCQOPTIONS
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MCQOPTIONS
This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Aircraft Design knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A subsonic aircraft has unswept wing which has maximum lift coefficient of 1.4. Now, consider wing is provided sweep of 25 at quarter chord point. Now, determine the change in maximum lift coefficient due to the provision of sweep. |
| A. | Maximum Lift coefficient will be reduced by 0.2580 amount |
| B. | Increment by 1.245 |
| C. | Decreases by 0.0476 amount |
| D. | Maximum lift coefficient will increase by 56% |
| Answer» B. Increment by 1.245 | |
| 2. |
A subsonic aircraft wing has aspect ratio of 8. Now we have been asked to provide winglet to this wing. Evaluate approximate value of effective aspect ratio of winglet is considered. |
| A. | 9.6 |
| B. | 23 |
| C. | 32 |
| D. | 4.89 |
| Answer» B. 23 | |
| 3. |
If an airfoil is designed to provide lift curve slope as 7.8, then find airfoil efficiency. The actual lift curve slope of the airfoil is 7.4. |
| A. | 94.87% |
| B. | 45% |
| C. | 15.6% |
| D. | 98.7% |
| Answer» B. 45% | |
| 4. |
A supersonic 2D airfoil has Mach number of 1.5. Find Lift curve slope of the airfoil. |
| A. | 0.062 per degree |
| B. | 0.062 per rad |
| C. | 24 per degree |
| D. | 12.56 per degree |
| Answer» B. 0.062 per rad | |
| 5. |
A 2D airfoil is operating at 0.6M. Find the approximate value of lift curve slope in per rad. |
| A. | 7.85 |
| B. | 1.9 |
| C. | 2.3 |
| D. | 3.87 |
| Answer» B. 1.9 | |
| 6. |
At same value of maximum lift AOA, lift coefficient of Cambered wing is _________ |
| A. | higher than uncambered wing |
| B. | lower than uncambered wing |
| C. | same as cambered airfoil always |
| D. | not dependent on camber |
| Answer» B. lower than uncambered wing | |