Question

Jet propulsion is a method of generating propulsive force by reaction of ________

(a) Accelerating mass

(b) Volume

(c) Mass flow rate

(d) Velocity

This question was addressed to me in an interview for job.

I need to ask this question from Force Exerted by a Jet on a Stationary Curved Plate in chapter Impact of Jets and Jet Propulsion of Fluid Mechanics

Answer 1

Correct option is (a) Accelerating mass

Explanation: Force exerted by a jet on a stationery plate happens in three cases. The three cases are classified depending on their position. Jet propulsion is a method of generating propulsive force by reaction of accelerating mass.