Mechanical Engineering Classes

What Is Theory of Machines Theory of Machines: may be defined as that branch of engineering science, which deals with the study of relative motion between the various parts of machine, and forces which act on them. The knowledge of this subject is very essential for an engineer in designing the various parts of a machine.  

Hydraulic turbines & Types Hydraulic Turbines  are also known as water turbines   Pelton Turbine : Pelton turbine is a type of impulsive water turbine Francis Turbine: Francis turbine is a type of water turbine.  They are used widely. Kaplan Turbine: We can notice the little variation from the Francis turbine Turgo  turbine: Pelton wheel modification is turgo turbine. Cross flow turbine: It is also known as Ossberger turbine or bankiMichell Turbine. Wind turbine: The Wind turbines are operated at the single stage but there is working without nozzle and inter-stage guide vanes. Mercury vapour turbine: In the mercury vapour turbine working fluid is mercury. It is used to improve the efficiency of the fossil fueled generating station. In some power plants we can see notice the combination of the conventional steam turbine and mercury vapours. The toxicity of the metal mercury was quickly outward.   ...

Hydraulic Machines Introduction The subject ' Hydraulic Machines' may be defined as that branch of Engineering - science which deals with the machines run by water under some head or raising the water to higher levels. Impact of Water Jets What is the impact of jets of water in hydraulic machines and fluid dynamics? What force does a water jet imposes on different surfaces like plane surface, curved surface and moving curved vanes etc.  The following relations are important : (a) Force exerted by a jet of water impinging normally on a fixed plate, (b) Force exerted by a jet of water impinging normally (i.e. perpendicular) on a fixed plate inclined at an angle 0 (as shown in Fig. 4.1) is                         Force exerted by the jet in the direction of flow,     and force exerted by the jet in a direction normal to flow,   ...

Types of Loads                                              Different types of loads  in engineering mechanics are compression, tension, torsion and bending. Compression : Compression loading is an effect in which the component reduces it size. During compression load there is reduction in volume and increase in density of a component. Tension: Tension is the act of stretching rod, bar, spring, wire, cable etc. that is being pulled from the either ends. Torsion: Torsion is the act of twisting of an rod, wire, spring etc. about an axis due to applied couple (torque). Bending: Bending is act of changing component from straight form into a curved or angular form.

Forging Process   Forging process  is perhaps the oldest metal working process and was known even during prehistoric days when metallic tools were made by heating and hammering. Forging is basically involves plastic deformation of material between two dies to achieve desired configuration. Depending upon complexity of the part forging is carried out as open die forging and closed die forging. In open die forging process, the metal is compressed by repeated blows by a mechanical hammer and shape is manipulated manually.                                                                            ...

Technically, mechanical engineering is the application of the principles and problem-solving techniques of engineering from design to manufacturing to the marketplace for any object. Mechanical engineers analyze their work using the principles of motion, energy, and force — ensuring that designs function safely, efficiently, and reliably, all at a competitive cost. Mechanical engineers make a difference. That’s because mechanical engineering careers center on creating technologies to meet human needs. Virtually every product or service in modern life has probably been touched in some way by a mechanical engineer to help humankind.   This includes solving today’s problems and creating future solutions in health care, energy, transportation, world hunger, space exploration, climate change, and more.   Being ingrained in many challenges and innovations across many fields means a mechanical engineering education is versatile. T...