The entropy may be expressed as a function of

Related MCQs

• The entropy increase due to internal irreversibility is also called entropy production or entropy generation.
• 1.6 Kg of air is expanded at constant pressure from 100°C to 0°C resulting in entropy change of - 2.0 J/K 3.2 Kg of air is cooled at constant volume from 100°C to 0°C with a change in entropy of -3.0 J/K. The ratio Cp/ Cv is
• According to entropy principle, the entropy of an isolated system can never decrease and remains constant only when the process is reversible.
• The rate of entropy increase of the control volume          or          the net rate of entropy transfer to it.
• The rate at which entropy is transferred out must          the rate at which entropy enters the control volume.
• Entropy increase dS of the system can be expressed as
• If a relation exists among variables x,y,z then z may be expressed as a function of x and y as, dz=Mdx+Ndy .
• Entropy may decrease locally at some region within the isolated system. How can this statement be justified?
• For getting TdS equations, we assume entropy to be a function of T and V and also of T and p.
• In all irrevesible processes, the entropy of the system