1–19C

1–19C What is a quasi-equilibrium process? What is its
importance in engineering?
ANS
1-19CA process duringwhicha systemremains almost inequilibriumat all times is called a quasiequilibrium process. Manyengineeringprocesses canbeapproximatedas beingquasi-equilibrium. The
work output of a device is maximumand the work input to a device is minimumwhen quasi-equilibrium
processes are used instead ofnonquasi-equilibriumprocesses.