Question

Pick out the correct statement.

a.

The available energy in an isolated system for all irreversible (real) processes decreases.

b.

The efficiency of a Carnot engine increases, if the sink temperature is decreased.

c.

The reversible work for compression in non-flow process under isothermal condition is the change in Helmholtz free energy.

d.

all (a), (b) and (c)

Answer: (d).all (a), (b) and (c)

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Q. Pick out the correct statement.

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