Question

quasi-static process is

• A. In equilibrium at every state
• B. Not involving friction
• C. Reversible
• D. Irreversible

Answer 1

Answer: (A)

In equilibrium at every state

Answer 2

A quasi-static process is a thermodynamic process that proceeds infinitely slowly, such that the system remains infinitesimally close to an equilibrium state at all times. This means that at every intermediate stage of the process, the system is in thermodynamic equilibrium.

• In equilibrium at every state: This aligns perfectly with the definition of a quasi-static process.

• Not involving friction: A quasi-static process can still involve dissipative effects like friction and yet be quasi-static if it proceeds slowly enough.

• Reversible: A quasi-static process is a necessary condition for a process to be reversible, but it is not a sufficient condition.

• Irreversible: A quasi-static process can be reversible if there are no dissipative effects.