Which of the following effects are neglected for simple cases of nozzle expansion?

A)
Heat exchange
B)
Frictional effects
C)
Reversibility
D)
Divergence angle

Correct Answer :   Reversibility


Explanation : For simple cases of nozzle expansion, the effects of friction, heat transfer, shock waves, non-equilibrium and divergence angle are neglected. But the process is considered to be reversible none the less.