Question

The flow through a nozzle is regarded as
A. constant volume flow
B. constant pressure flow
C. isothermal flow
D. isentropic flow

Answer 1

The flow through a nozzle is regarded as isentropic flow.

Answer 2

The flow of the nozzle is regarded as D. isentropic flow. A nozzle is an opening or a passage which is used to increase or regulate the kinetic energy.

When a fluid passes through a nozzle its pressure decreases because of the expansion of the fluid. This expansion takes place while forcing the fluid through the nozzle. Therefore, the specific volume of the fluid varies which varies the pressure of the fluid across the sectional area of the nozzle.