What is reversible process with example?

A reversible process is one which can be taken from its initial state to another state, and then back to the initial state without any change to either the system or the surroundings. Examples of these are the following: • frictionless motion of solids (no friction between mating surfaces)

How do you calculate reversibility?

The criterion for a reversible process would be ΔS=0. The whole point is that the entropy maximum postulate states that the entropy must be maximized.

What is reversible work and irreversibility?

By Ignacio Vasquez-Castro. Reversible work (Wrev) Reversible work (Wrev) is the maximum amount of Useful work (Wu) that can be produced (or the minimum amount of Wu that needs to be supplied) as a system undergoes a process between specified initial and final states.

What is the meaning of reversible and non reversible?

Reversible Changes – This is when materials can be changed back to how they were before the reaction took place. E.g. When ice melts to form water. It could be frozen back to ice again. 2. Irreversible Changes – This is when materials cannot be changed back to how they were before.

What is reversible machine?

Reversible machine : A machine which is capable of doing work in the reverse direction even after the removal of effort ,load get lifted is called Reversible machine. Non – Reversible machine : A machine which is not capable of doing work in the reverse direction is called Non – Reversible machine.

What is a reversible work?

The reversible work Wrev is defined as the maximum amount of useful work output or the minimum work input for a system undergoing a process between the specified initial and final states in a totally reversible manner.

What do you mean by reversible?

: capable of being reversed or of reversing: such as. a : capable of going through a series of actions (such as changes) either backward or forward a reversible chemical reaction. b : having two finished usable sides reversible fabric. c : wearable with either side out a reversible coat.

How do you know if a process is reversible?

Summary

1. A reversible process is one in which both the system and its environment can return to exactly the states they were in by following the reverse path.
2. An irreversible process is one in which the system and its environment cannot return together to exactly the states that they were in.

Which of the following is reversible machine?

Dynamo is an example of reversible machine since it converts electrical energy into mechanical to start a car. And during driving it converts mechanical energy into electrical energy.

Which is non reversible machine?

A non-reversible machine is also called a self-locking machine.

What is the meaning of reversible work?

Reversible work is work that’s performed under conditions such that you could then “run it in reverse” and get back to your initial state. A famous example is the Carnot cycle. The reason why not all work is reversible is that most processes increase entropy (as in, total entropy, of the entire Universe).

What are the characteristics of reversible processes?

An important feature of a reversible process is that, depending on the process, it represents the maximum work that can be extracted in going from one state to another, or the minimum work that is needed to create the state change.

Is it possible to calculate the total irreversible and reversible work?

Fortunately, in the special case of a constant external force per unit area applied to the gas, these difficulties can be circumvented, and the total irreversible and reversible work can be determined relatively easily.

What is the reversible work WREV?

The reversible work Wrev is defined as the maximum amount of useful work output or the minimum work input for a system undergoing a process between the specified initial and final states in a totally reversible manner.