MCQOPTIONS
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MCQOPTIONS
This section includes 15 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. |
Determine the value of sink rate of glider which is operating with 4.2° of glide angle and has speed of 120m/s. |
| A. | 8.78m/s |
| B. | 9.8ms |
| C. | 56.5ms |
| D. | 8.7ms |
| Answer» B. 9.8ms | |
| 2. |
A glider has aspect ratio of 20 and CD0 of 0.02. In order to attain maximum range, determine the value required aerodynamic efficiency. Take e as 1. |
| A. | 28.02 |
| B. | 20 |
| C. | 30 |
| D. | 43 |
| Answer» B. 20 | |
| 3. |
Sink rate can be used to ____________ |
| A. | determine the time a glider may remain in the air |
| B. | determine and estimate takeoff gross weight |
| C. | estimate only wing loading |
| D. | calculate weight to thrust ratio |
| Answer» B. determine and estimate takeoff gross weight | |
| 4. |
If a sailplane has glide ratio of 45 then, find horizontal distance travelled by this sailplane. Consider altitude loss of 1000ft. |
| A. | 45000ft |
| B. | 1000ft |
| C. | 3456ft |
| D. | 987ft |
| Answer» B. 1000ft | |
| 5. |
All the gliders are unpowered. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
If my glider has lift coefficient at maximum lift to drag as 1.5 and induced drag factor K is 0.007 then, find parasite drag coefficient. |
| A. | 0.01575 |
| B. | 0.01 N |
| C. | 0.02N |
| D. | 0.0157N |
| Answer» B. 0.01 N | |
| 7. |
Which of the following is correct for a typical glider?a) Drag D = W*cos (gamma)b) Drag D = W*arcsine (gamm |
| A. | Drag D = W*cos (gamma) |
| B. | Drag D = W*arcsine (gamma) |
| C. | Drag D = W |
| D. | Drag D = Thrust T |
| Answer» B. Drag D = W*arcsine (gamma) | |
| 8. |
If a glider needs to be flown at maximum range then, at which value of CL we should fly this glider? Consider CD0/K is 2.8. |
| A. | 1.67 |
| B. | 3.2 |
| C. | 5.6 |
| D. | 2.5 |
| Answer» B. 3.2 | |
| 9. |
Find the velocity required for maximum range. Consider a sailplane has wing loading of 110N/m2 and K/CD0 of 0.35. |
| A. | 10.3m/s |
| B. | 10.3mph |
| C. | 12.5mph |
| D. | 9.2mph |
| Answer» B. 10.3mph | |
| 10. |
Typically, a high performance unpowered aircraft is called ________ |
| A. | sailplane |
| B. | glider |
| C. | jet |
| D. | twin engine |
| Answer» B. glider | |
| 11. |
Glider with glide angle of 4.2° is gliding with gliding ratio of _____ |
| A. | 13.6 |
| B. | 12.9 |
| C. | 15 |
| D. | 25.4 |
| Answer» B. 12.9 | |
| 12. |
A typical glider has weight of 150N and has glide angle of 2.5°. Find Lift produced by the glider. |
| A. | 149.85N |
| B. | 150kN |
| C. | 322N |
| D. | 120Kn |
| Answer» B. 150kN | |
| 13. |
If aerodynamic efficiency of the glider is 20 then, found the value of corresponding glide angle. |
| A. | 2.86 unit |
| B. | 3.8 |
| C. | 5.6 |
| D. | 12.12 |
| Answer» B. 3.8 | |
| 14. |
The tangent of glide angle is ________ |
| A. | equal to drag to lift ratio |
| B. | lift to drag ratio |
| C. | inverse of thrust |
| D. | equal to thrust |
| Answer» B. lift to drag ratio | |
| 15. |
For a typical gliding flight, thrust will be ________ |
| A. | zero |
| B. | equal to the lift |
| C. | always same as drag |
| D. | always same as weight |
| Answer» B. equal to the lift | |