MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Rocket Propulsion knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
If the flight is not following a vertical path, then the gravity losses are a function of the angle between the flight direction and the local horizontal. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
For a propulsive force of 1500 N, determine the magnitude of its component in a direction normal to the flight velocity if the angle of flight path with the horizontal is 30 and the angle of direction of thrust with the horizontal is 10 . Assume g=9.8 m/s2. |
| A. | 513 N |
| B. | 1026 N |
| C. | 279 N |
| D. | 813 N |
| Answer» B. 1026 N | |
| 3. |
Determine the component of gravitational force in the direction of the flight path if the angle of the flight path with the horizontal is 30 , angle of direction of thrust with the horizontal is 20 and mass of the vehicle is 300 kg. Assume the acceleration due to gravity to be 9.8 m/s2. |
| A. | 2250 N |
| B. | 2980 N |
| C. | 1470 N |
| D. | 3343 N |
| Answer» D. 3343 N | |
| 4. |
Determine the acceleration perpendicular to flight path for constant value of flight speed u = 100 m/s and instantaneous radius R = 200 m. |
| A. | 100 m/s<sup>2</sup> |
| B. | 50 m/s<sup>2</sup> |
| C. | 200 m/s<sup>2</sup> |
| D. | 125 m/s<sup>2</sup> |
| Answer» C. 200 m/s<sup>2</sup> | |
| 5. |
Which of the following is acceleration perpendicular to the flight path? |
| A. | ud /dt |
| B. | du/dt |
| C. | d(u )/dt |
| D. | d(u/ )/dt |
| Answer» B. du/dt | |
| 6. |
In the direction of the flight path, the product of mass and acceleration of the vehicle is not the sum of which of the following forces? |
| A. | Propulsive |
| B. | Aerodynamic |
| C. | Gravitational |
| D. | Electromagnetic |
| Answer» E. | |
| 7. |
Lift is generated __________ to the flight path for an airborne vehicle in rectilinear equilibrium flight. |
| A. | parallel |
| B. | perpendicular |
| C. | at an acute angle |
| D. | at an obtuse angle |
| Answer» C. at an acute angle | |
| 8. |
The angle at which the wings of the vehicle are inclined to the flight path is called as __________ |
| A. | angle of attack |
| B. | flight path angle |
| C. | pitch angle |
| D. | roll angle |
| Answer» B. flight path angle | |
| 9. |
What is the trajectory of an airborne vehicle in rectilinear equilibrium flight? |
| A. | One-dimensional |
| B. | Two-dimensional |
| C. | Three-dimensional |
| D. | Four-dimensional |
| Answer» C. Three-dimensional | |
| 10. |
Which of the following can be non-zero for an airborne vehicle moving in rectilinear equilibrium flight? |
| A. | Control forces |
| B. | Lateral forces |
| C. | Moments |
| D. | Thrust |
| Answer» E. | |