Mechanical Engineering

Casting is one of the process used for making componds of complicated shapes in larger quantites.It is the process of producing metal parts by pouring molten metal into the mould cavity of the required shape and allowing the metal  to solidify.The solidified metal piece is called as casting                                                    A plant where the castings are made is called a FOUNDRY therefore it is a collection of necessary materials tools and equipment to produce castings.

Otto cycle is a gas power cycle that is used in spark-ignition internal combustion engines (modern petrol engines). This cycle was introduced by Dr. Nikolaus August Otto, a German Engineer. An Otto cycle consists of four processes:     Two isentropic (reversible adiabatic) processes     Two isochoric (constant volume) processes These processes can be easily understood if we understand p-V (Pressure-Volume) and T-s (Temperature-Entropy) diagrams of Otto cycle. p-V and T-s Diagrams of Otto Cycle: In the above diagrams, p → Pressure V → Volume T → Temperature s → Entropy Vc → Clearance Volume Vs → Stroke Volume Processes in Otto Cycle: As stated earlier, Otto cycle consists of four processes. They are as follows: Process 1-2: Isentropic compression In this process, the piston moves from bottom dead centre (BDC) to top dead centre (TDC) position. Air undergoes reversible adiabatic (isentropic) compression. We know that compression is a process ...

The cycle which was introduced by Dr. A.N.Otto a german scientist is called otto cycle.Now a days pertol and gas engines follow this cycle.This cycle consists of the following four processes:                                                         1.Two reversible adiabatic or isentropic processes,and                                                         2.Two constant volume processes                                                         Process1-2:                  Process 1-2 is the isetropic compression process....

                               Cycle is defined as the series of operations or processes performed on a system so that the system attains its original state.The cycles which use air as the working fluid are knows as gas power cycles.In the gas power cycles air in the cylinder may be subjected to series of operations which cause the air to attain its origanal position.The soures of heat supply and the sink for heat rejection are assumed to be external to the air.The cycle can useally be represented on p-v and T-s diagrams

Mechanical engineering is the discipline that applies the principles of engineering, physics, and materials science for the design, analysis, manufacturing, and maintenance of mechanical systems. It is the branch of engineering that involves the design, production, and operation of machinery. It is one of the oldest and broadest of the engineering disciplines. The engineering field requires an understanding of core concepts including mechanics, kinematics, thermodynamics, materials science, structural analysis, and electricity. Mechanical engineers use these core principles along with tools like computer-aided design, and product lifecycle management to design and analyze manufacturing plants, industrial equipment and machinery, heating and cooling systems, transport systems, aircraft, watercraft, robotics, medical devices, weapons, and others. Mechanical engineering emerged as a field during the industrial revolution in Europe in the 18th century; however, its development can be trac...

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