Knowledge of Mechanical Engineering

  Green manufacturing   ·        What is green manufacturing? It is a manufacturing process in which use of minimal natural resources, reducing pollution and waste, reuse and recycle the material and lowering the emission in the process.                                                Fig 1. Green Manufacturing   ·        What is Additive manufacturing? It is a process which is used for construction of a three-dimensional geometry or objects from a CAD model by depositing materials in layer-by-layer form. This process is opposite of subtractive manufacturing like in which object is created by cutting away solid block until it formed.                                       Fig.2 Additive a...

  Sun and Planetary Gearbox

  ___________________________________________________________________________________ First law of Thermodynamics for a Closed System ___________________________________________________________________________________   What is closed system? It is a thermodynamic system, in which only allows the transfer of energy. That is no mass is transferred between the system. Example of closed system: Sun rays coming to earth, Piston cylinder arrangement without valves. ___________________________________________________________________________________   Fundamental statement for first law of thermodynamics   “Energy can neither be created nor destroyed, it can just transform from one form to another form.” _______________________________________________________________________   1.      First law of Thermodynamics for closed system undergoing a thermodynamic cycle Thermodynamic cycle: - It is the set of processes arranged i...