MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Aerodynamics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The cl,max for the NACA LS (1) 0417 is higher than that for the NACA 2412. |
| A. | False |
| B. | True |
| Answer» C. | |
| 2. |
Enlist the computer methods used which benefitted the airfoil performance along with wind- tunnel testing. |
| A. | Panel method |
| B. | Advanced viscous flow solutions |
| C. | Panel method and advanced viscous flow solutions |
| D. | Hit and trial methods |
| Answer» D. Hit and trial methods | |
| 3. |
The major breakthrough in high- speed airfoil industry was_____ |
| A. | GA (W)-1 airfoil |
| B. | Supercritical airfoil |
| C. | Standard NACA airfoils |
| D. | Symmetrical airfoils |
| Answer» C. Standard NACA airfoils | |
| 4. |
Which is not a feature of the first new NACA airfoil (GA(W)-1 or the Whitcomb airfoil) developed? |
| A. | Large leading-edge radius |
| B. | Higher symmetry |
| C. | Higher maximum lift coefficient |
| D. | Cusped trailing edge |
| Answer» C. Higher maximum lift coefficient | |
| 5. |
The NACA LS (1) 04XX airfoils when compared to NACA airfoils with same thickness had higher L/D ratios. For a lift coefficient of 1.0, what was this increase approximately in percentage? |
| A. | 80% |
| B. | 20% |
| C. | 50% |
| D. | Less than 10% |
| Answer» D. Less than 10% | |
| 6. |
A higher value of L/D ratio deteriorates climbing performance for the flight. |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
Which of the following is a new NACA airfoil? |
| A. | NACA 2212 |
| B. | NACA LS (1)-0407 |
| C. | NACA 0021 |
| D. | Both NACA LS (1)-0407 and NACA 2412 |
| Answer» C. NACA 0021 | |
| 8. |
The main motive behind redesigning standard airfoils to get the new airfoils was higher maximum lift coefficient and______ |
| A. | Lesser drag |
| B. | Better shapes |
| C. | Handling flow separation effects |
| D. | Strength of material |
| Answer» D. Strength of material | |
| 9. |
Modern low-speed airfoils were developed using numerical methods using the computer directly. The given statement is_____ |
| A. | Partially true |
| B. | False |
| C. | True |
| D. | Incomplete |
| Answer» B. False | |
| 10. |
The standard NACA airfoils were based on ____ |
| A. | Computer modeling results |
| B. | Numerical techniques and wind- tunnel testing |
| C. | Experiment data |
| D. | Theoretical data |
| Answer» D. Theoretical data | |