Explore topic-wise MCQs in Rocket Propulsion.

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.