Question

Lines originating after limiting line intersect the sonic line.

(a) True

(b) False

I had been asked this question by my school principal while I was bunking the class.

This intriguing question originated from Supersonic Nozzle Design in portion Numerical Techniques for Nonlinear Supersonic Flow, Elements of Hypersonic Flow, Couette and Poiseuille Flow of Aerodynamics

Answer 1

Correct answer is (b) False

The explanation: Limiting line is defined as the line in the nozzle beyond which any characteristic line originating downstream does not intersect the sonic line. On the other hand, any line originating between the sonic line and the limiting line will intersect the sonic line.