# Mechanical Engineering - Steam Nozzles and Turbines - Discussion

### Discussion :: Steam Nozzles and Turbines - Section 1 (Q.No.20)

20.

Thermal equilibrium means that the flow of steam is

 [A]. isothermal [B]. isentropic [C]. hyperbolic [D]. polytropic

Explanation:

No answer description available for this question.

 Nitesh said: (Jan 15, 2015) Isothermal means the heat is constant throughout how come it is isentropic?

 Saikumar said: (Mar 12, 2015) dq/t = 0 the cycle is reversible. dq/t<0 the cycle is irreversible and possible. dq/t>0 the cycle is impossible. Entropy = dq/t.

 Mitul said: (Apr 11, 2015) I think isentropic means entropy is constant it means that temperature is also constant and for thermal equilibrium temp. And pressure both are constant so the answer is isentropic.

 Knowledge said: (Jun 28, 2016) Isentropic const means constant entropy but it does not mean its const pressure so how it's possible?

 Deepak Soni said: (Jun 23, 2017) If two body are in thermal equilibrium then the heat does not flow so the answer Is isentropic.

 Mahi said: (Sep 21, 2017) Isentropic because in an ideal condition, there is no heat transfer between system and surroundings, therfore flow inside the system be isolated from the heat transfer from the surroundings, then the flow of steam is isentropic.

 Mahtab Ali said: (Dec 27, 2017) Yes, isentropic. Because isolated condition apply.

 Pradipsigh said: (Apr 28, 2018) Thermal equilibrium means there is no change in temperature of a system so if there is no change in temperature that means the temperature is constant so the answer will be isothermal (C=T).

 Pratiksahu said: (Jun 28, 2018) I think Hyperbolic will be the answer.

 Vishnu Gopi said: (Feb 26, 2020) I think if thermal equilibrium dt=0 so isentropic process heat is zero Q=0 so it is isentropic