MCQOPTIONS
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MCQOPTIONS
This section includes 7 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 | |
| 7. |
Following diagram represents _______________ |
| A. | cambered wing lift curve |
| B. | drag polar |
| C. | thrust loading |
| D. | power loading |
| Answer» B. drag polar | |