Question

A small steam whistle (perfectly
insulated and doing no shaft work) cause
a drop 0.8 KJ/kg in the enthalpy of steam
from entry to exist. If the kinetic energy
of the entry is negligible, the velocity of
the steam at exist is
1) 4 m/s
2) 40 m/s
3) 80 m/s
4) 120 m/s​

Answer 1

I am dileep, I have a look at the moment. I

Answer 2

Answer:

option 2) 40 m/s

Explanation:

apply SFEE eqn for nozzle/diffuser