Question

For a compressible, ideal gas, mass flow rate depends on parameters such as flow area, pressure, temperature, properties of the gas, and _________

(a) Avogardo’s Number

(b) Mach Number

(c) Reynold’s Number

(d) Le-Grange’ Number

This question was addressed to me in quiz.

Question is taken from Flow through Nozzles in division Flow Through Pipes of Fluid Mechanics

Answer 1

Right answer is (b) Mach Number

For explanation I would say: Mass flow rate should depend on the velocity. Here Mach number denotes the velocity. So, the Mach number gives the right answer.