Note for Basics of Mechanical Engineering - BME by ALOK MOHAPATRA

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Basics of Mechanical Engineering

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CONTENT ➢Thermodynamics ➢Application of Thermodynamics: ➢Introduction to Fluid Mechanics and Heat transfer: ➢Production processes ➢Engineering materials: ➢Fasteners and Power transmission devices: ➢Mechanical Measurements:

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CHAPTER-1 THERMODYNAMIC S Fundamental Concepts and Definitions ➢It is the science of the relations between heat, Work and the properties of the systems. ➢How to adopt these interactions to our benefit? ➢Thermodynamics enables us to answer this question. Analogy ✓All currencies are not equal ✓Eg: US$ or A$ or UK £ etc. Have a better purchasing power than Indian Rupee or Thai Baht or Bangladesh Taka similarly , all forms of energy are not the same.

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Human civilization has always endeavoured to obtain ✓Shaft work ✓Electrical energy ✓Potential energy to make life easier Examples If we like to ✓Rise the temperature of water in kettle ✓Burn some fuel in the combustion chamber of an aero engine to propel an aircraft. ✓Cool our room on a hot humid day. ✓Heat up our room on a cold winter night. ✓Have our beer cool. What is the smallest amount of electricity/fuel we can get away with?