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Compressors, Gas Dynamics and Gas Turbines - Data Intensity 3 Multiple Questions and Answers.
| 11. | Air foils when designed to work in water are called as _________ | ||
| A. | Dynamic air foil | ||
| B. | Hydro foil | ||
| C. | Dynamic air foil & Hydro foil | ||
| D. | None of the mentioned | ||
| 12. | In air foil lift is __________ proportional to angle of attack. | ||
| A. | inversly | ||
| B. | not related | ||
| C. | directly | ||
| D. | none of the mentioned | ||
| 13. | Cambered air foils generate lift at ________ angle of attack. | ||
| A. | zero | ||
| B. | high | ||
| C. | low | ||
| D. | none of the mentioned | ||
| 14. | _____ difference is observed in between the sides of air foil. | ||
| A. | Temperature | ||
| B. | Pressure | ||
| C. | Temperature & pressure | ||
| D. | None of the mentioned | ||
| 15. | Relation between angle of attack and _______ for invincible fluids is found in thin airfoil theory. | ||
| A. | Lift | ||
| B. | Drag | ||
| C. | Lift & Drag | ||
| D. | None of the mentioned | ||
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