ME1201 Engineering Thermodynamics B.E Question Bank : niceindia.com

Name of the College : Noorul Islam College of Engineering
University : Anna University
Degree : B.E
Department : Mechanical Engineering
Subject Code/Name : ME 1201 – Engineering Thermodynamics
Year : 2nd
Semester : 3rd
Document Type : Question Bank
Website : niceindia.com

Download Model/Sample Question Paper :https://www.pdfquestion.in/uploads/niceindia.com/3022-ME_1201_ENGINEERING_T.DYNAMICS_.pdf

Engineering Thermodynamics Question paper

1. What do you understand by pure substance? :
A pure substance is defined as one that is homogeneous and invariable in chemical composition throughout its mass.

Related : Noorul Islam College of Engineering ME1203 Gas Dynamics & Jet Propulsion B.E Question Bank : www.pdfquestion.in/3021.html

2. Define thermodynamic system. :
A thermodynamic system is defined as a quantity of matter or a region in space, on which the analysis of the problem is concentrated.

3. Name the different types of system. :
1. Closed system (only energy transfer and no mass transfer)
2. Open system (Both energy and mass transfer)
3. Isolated system (No mass and energy transfer)

4. Define thermodynamic equilibrium. :
If a system is in Mechanical, Thermal and Chemical Equilibrium then the system is in thermodynamically equilibrium. (or) If the system is isolated from its surrounding there will be no change in the macroscopic property, then the system is said to exist in a state of thermodynamic equilibrium.

5. What do you mean by quasi-static process? :
Equilibrium state
Quasi-static process
Infinite slowness is the characteristic feature of a quasi-static process.
A quasistatic process is that a succession of equilibrium states.
A quasi-static process is also called as reversible process.

6. Define Path function. :
The work done by a process does not depend upon the end of the process. It depends on the path of the system follows from state 1 to state 2. Hence work is called a path function.

7. Define point function. :
Thermodynamic properties are point functions. The change in a thermodynamic property of a system is a change of state is independent of the path and depends only on the initial and final states of the system.

8. Name and explain the two types of properties. :
The two types of properties are intensive property and extensive property.

Intensive Property :
It is independent of the mass of the system. Example : pressure, temperature, specific volume, specific energy, density.

Extensive Property :
It is dependent on the mass of the system. Example : Volume, energy. If the mass is increased the values of the extensive properties also increase.

9. Explain homogeneous and heterogeneous system. :
The system consist of single phase is called homogeneous system and the system consist of more than one phase is called heterogeneous system.

10. What is a steady flow process? :
Steady flow means that the rates of flow of mass and energy across the control surface are constant.

11. Prove that for an isolated system, there is no change in internal energy. :
In isolated system there is no interaction between the system and the surroundings. There is no mass transfer and energy transfer. According to first law of thermodynamics as dQ = dU + dW; dU = dQ – dW; dQ = 0, dW = 0, There fore dU = 0 by integrating the above equation U = constant, therefore the internal energy is constant for isolated system.

12. Indicate the practical application of steady flow energy equation. :
1. Turbine,
2. Nozzle,
3. Condenser,
4. Compressor.

13. Define system. :
It is defined as the quantity of the matter or a region in space upon which we focus attention to study its property.

14. Define cycle. :
It is defined as a series of state changes such that the final state is identical with the initial state.

15. Explain Mechanical equilibrium. :
If the forces are balanced between the system and surroundings are called Mechanical equilibrium