This book has been written specifically to meet the exhaustive requirements of the subject “Elements of Mechanical Engineering” of B.E. examination of Punjab Technical University, Jalandhar. The book includes comprehensive treatment of the subject matter under wide range of topics mentioned in the syllabus, with a large number of solved examples to support the text. Besides this, Highlights, Objective Type Questions, Theoretical Questions and Unsolved Examples have been added at the end of each chapter to make the book a comprehensive unit in all respects. As per new syllabus of PTU, Jalandhar, three new chapters namely, ‘‘Engineering Materials’’ ‘‘Centre of Gravity and Centroid’’ and ‘‘Moment of Inertia’’ have been added to make the book complete in every sense.
Additional Info
  • Publisher: Laxmi Publications
  • Language: English
  • ISBN : 978-81-318-0222-9
  • Chapter 1

    Basic Concepts of Thermodynamics Price 2.99  |  2.99 Rewards Points

    1.1. Definition of thermodynamics. 1.2. Thermodynamic systems —System, boundary and surroundings—Closed system— Open system—Isolated system—Adiabatic system— Homogeneous system—Heterogeneous system. 1.3. Macroscopic and microscopic points of view. 1.4. Pure substance. 1.5. Thermodynamic equilibrium. 1.6. Properties of systems. 1.7 State. 1.8. Process. 1.9. Cycle. 1.10. Point function. 1.11. Path function. 1.12. Temperature. 1.13. Zeroth law of thermodynamics. 1.14. The thermometer and thermometric property —Introduction—Measurement of temperature— The international practical temperature scale—Ideal gas. 1.15. Pressure —Definition of pressure—Unit for pressure—Types of pressure measurement devices—Mechanical-type instruments—Important types of pressure gauges. 1.16. Specific volume. 1.17. Reversible and irreversible processes. 1.18. Energy, work and heat —Energy—Work and heat. 1.19. Reversible work —Highlights—Objective Type Questions—Theoretical Questions— Unsolved Examples.
  • Chapter 2

    First Law of Thermodynamics Price 2.99  |  2.99 Rewards Points

    It is the heat energy stored in a gas. If a certain amount of heat is supplied to a gas the result is that temperature of gas may increase or volume of gas may increase thereby doing some external work or both temperature and volume may increase ; but it will be decided by the conditions under which the gas is supplied heat. If during heating of the gas the temperature increases its internal energy will also increase. Joule’s law of internal energy states that internal energy of a perfect gas is a function of temperature only. In other words, internal energy of a gas is dependent on the temperature change only and is not affected by the change in pressure and volume. We do not know how to find the absolute quantity of internal energy in any substance ; however, what is needed in engineering is the change of internal energy.
  • Chapter 3

    Second Law of Thermodynamics and Entropy Price 2.99  |  2.99 Rewards Points

    It has been observed that energy can flow from a system in the form of heat or work. The first law of thermodynamics sets no limit to the amount of the total energy of a system which can be caused to flow out as work. A limit is imposed, however, as a result of the principle enunciated in the second law of thermodynamics which states that heat will flow naturally from one energy reservoir to another at a lower temperature, but not in opposite direction without assistance. This is very important because a heat engine operates between two energy reservoirs at different temperatures. Further the first law of thermodynamics establishes equivalence between the quantity of heat used and the mechanical work but does not specify the conditions under which conversion of heat into work is possible, neither the direction in which heat transfer can take place . This gap hasbeen bridged by the second law of thermodynamics
  • Chapter 4

    Gas Power Cycles Price 2.99  |  2.99 Rewards Points

    A cycle is defined as a repeated series of operations occurring in a certain order . It may be repeated by repeating the processes in the same order. The cycle may be of imaginary perfect engine or actual engine. The former is called ideal cycle and the latter actual cycle . In ideal cycle all accidental heat losses are prevented and the working substance is assumed to behave like a perfect working substance.
  • Chapter 5

    Internal Combustion Engines Price 2.99  |  2.99 Rewards Points

    Any type of engine or machine which derives heat energy from the combustion of fuel or any other source and converts this energy into mechanical work is termed as a heat engine.
  • Chapter 6

    Engineering Materials Price 2.99  |  2.99 Rewards Points

    The engineering materials may be classified as follows : 1. Metals (e.g., iron, aluminium, copper, zinc, lead etc.). 2. Non-metals (e.g.,leather, rubber, plastics, asbestos, carbon etc.).
  • Chapter 7

    Centre of Gravity and Centroid Price 2.99  |  2.99 Rewards Points

    Centre of Gravity and Centroid
  • Chapter 8

    Moment of Inertia Price 2.99  |  2.99 Rewards Points

    Moment of Inertia

About the Author

Not available

Other Books by Author