Mechanical

The pelton wheel is a tangential flow impulse turbine and now in common use. Leston A Pelton, an American engineer during 1880, developed this turbine. Fig shows the schematic arrangement of a pelton wheel. Pelton wheel consists of the following main parts. Penstock Spear and nozzle Runner with buckets Brake nozzle Outer casing Governing mechanism

In cooling towers, the warm water is discharged from the condenser and fed the cooled water back to the condenser. The rate of evaporation of water in cooling tower and subsequent reduction in water temperature depend upon the following parameters. The exposive time. Amount of water surface exposed. Relative humidity of air. Velocity of air

Electrodes: Generally two types of electroslag welding that are solid and metal cored are used. Though solid electrodes are more popular than the metal cored electrodes. Flux: Flux is the most important consumable material of Electroslag Welding. In its molten state it transforms the electrical energy into heat energy which helps in melting the electrode

A Diesel power plant (also known as Stand by diesel power station) uses a diesel engine as prime mover for the generation of electrical energy. This power station is generally compact and thus can be located where it is actually required. This kind of power station can be used to produce limited amounts of electrical

In these high energy rate forming processes large amount of energy is applied for a very short interval of time. Many metals tend to deform more readily under extra fast application of load which make these processes useful to form large size parts out of most metals including those which are otherwise difficult to form.

It is the sheet metal operations of production of a hole in a sheet metal by the punch and die. In case of punching, a circular hole is produced, where as in the case of piercing, the hole produced may be of any shape. Blanking It is the operation of cutting a piece of the

To deform the metal permanently, the stress must exceed the elastic limit. At room temperature, the metal is in a more rigid state than when at higher temperature. Hot Working and Cold Working Metal Forming. Thus, to deform the metal greater pressures are needed when it is in cold state than when in hot state