Question

High pressure steam is expanded adiabati-cally and reversibly through a well insulated turbine, which produces some shaft work. If the enthalpy change and entropy change across the turbine are represented by ΔH and ΔS respectively for this process:

a.

Δ H = 0 and ΔS = 0.

b.

Δ H ≠ 0 and ΔS = 0.

c.

Δ H ≠ 0 and ΔS ≠ 0.

d.

Δ H = 0 and ΔS ≠ 0.

Answer: (b).Δ H ≠ 0 and ΔS = 0.

Interact with the Community - Share Your Thoughts

Uncertain About the Answer? Seek Clarification Here.

Understand the Explanation? Include it Here.

Q. High pressure steam is expanded adiabati-cally and reversibly through a well insulated turbine, which produces some shaft work. If the enthalpy change and entropy change across the...

Similar Questions

Explore Relevant Multiple Choice Questions (MCQs)

Q. The necessary condition for phase equilibrium in a multiphase system of N components is that the

Q. The work done in isothermal compression compared to that in adiabatic compression will be

Q. For organic compounds, group contribution method can be used for the estimation of

Q. Specific __________ does not change during phase change at constant temperature and pressure.

Q. When liquid and vapour phases of one component system are in equilibrium (at a given temperature and pressure), the molar free energy is

Q. In the equation PVⁿ = constant, if the value of n = y = Cᵨ/Cᵥ, then it represents a reversible __________ process.

Q. The ammonia synthesis reaction represented by N₂ + 3H₂ ↔ 2NH₃ ; ΔH = - 22.4 kcal, is

Q. With increase in temperature, the atomic heat capacities of all solid elements

Q. The temperature at the eutectic point of the system is the __________ temperature that can be attained in the system.

Q. The effect of changing the evaporator temperature on COP as compared to that of changing the condenser temperature (in vapour compression refrigeration system) is

Q. Degree of freedom of a system consisting of a gaseous mixture of H₂ and NH₃ will be

Q. Pick out the wrong statement.

Q. Fugacity co-efficient of a substance is the ratio of its fugacity to

Q. Compressibility factor-reduced pressure plot on reduced co-ordinates facilitates

Q. Which of the following is not an intensive property ?

Q. Pick out the wrong statement.

Q. Gibbs phase rule finds application, when heat transfer occurs by

Q. Absorption/evolution of heat during conversion of a substance from one allotropic form to another is termed as the heat of

Q. Equilibrium constant of a reaction varies with the

Q. Third law of thermodynamics is concerned with the

Recommended Subjects

Are you eager to expand your knowledge beyond Basic Chemical Engineering? We've handpicked a range of related categories that you might find intriguing.

Click on the categories below to discover a wealth of MCQs and enrich your understanding of various subjects. Happy exploring!