There is more complexity in Practical gas power. We can simplify our analysis by undertaking the given approximations which are known by the name as air standard assumptions.

(a) The fluid which is working is an ideal gas

(b) Heats (cp&cv) which are specific in nature are constant.

(c) It is based on reversible cyclic process

(d) At the end of the heating process there is no dissociation

(e) The working fluid of circulating mass remains constant in the cycle.

(f) Addition part of heat is done by an external source to the cycle

(g) Rejection part of the heat is done to an external sink to the cycle

(h) K.E. & P.E remain unchanged.

**Links of Previous Main Topic:-**

- Introduction to statics
- Introduction to vector algebra
- Two dimensional force systems
- Introduction concept of equilibrium of rigid body
- Friction introduction
- Introduction about distributed forces
- Area moments of inertia in rectangular and polar coordinates
- Mass moment of inertia introduction
- Work done by force
- Kinematics of particles
- Position vector velocity and acceleration
- Plane kinematics of rigid bodies introduction
- Combined motion of translation and rotation
- Rectilinear motion in kinetics of particles
- Work and energy
- Linear momentum
- Force mass acceleration
- Simple stress introduction
- Normal strain
- Statically indeterminate system
- Introduction to thermodynamics
- Statement of zeroth law of thermodynamics with explanation
- Heat and work introduction
- First law of thermodynamics for a control mass closed system undergoing a cycle
- Open system and control volume
- Conversion of work into heat
- Introduction to carnot cycle
- Clausius inequality entropy and irreversibility introduction
- Ideal gas or perfect gas

**Links of Next Mechanical Engineering Topics:-**