Pirani Gauge is a device that is used to measure pressure, especially in vacuum systems. It was invented by a German physicist Marcello Stefano Pirani in the year 1906.It is based on a hot metal wire suspended in a tube and exposed to gas pressure media. This hot metal wire is made up of thin Tungsten, Nickel,…
Bevel protractor is an instrument that has a graduated circular scale with one pivoted arm that is used for measuring or making off the angles.This instrument is capable of measuring angles with a least count of 5′ or 5 minutes.It is used to measure the angle of any workpiece. It is used for various objects like jigs.Sometimes the…
Pelton turbine is an impulse turbine named after an American engineer Lester A.Pelton.Pelton turbines are suitable for power extraction when water energy is available at a high head and low flow rate.In this type of turbine, the potential and the pressure energy of water is converted to kinetic energy. A nozzle is used which increases…
Ultrasonic Machining Process is a non-conventional machining process used for machining both conducting and non-conducting materials. This machining process can be used to machine such materials that cannot be machined by the conventional machining process. Ultrasonic Machining is mainly used in brittle materials.As the name suggests, the machining process makes use of ultrasonic vibrations in…
Chemical Machining is the process of removal of material from the workpiece using chemical reactions by immersing the workpiece into a chemical solution.Chemical Machining is a process used for metal removal purpose by dissolution in a controlled manner from the workpiece by the application of acidic or alkaline solution and this solution is called etchant.The chemical…
A spark ignition (SI) engine is a type of internal combustion engine in which the air-fuel mixture is ignited using a spark from the spark plug.The compression ratio of this engine is usually 6 to 10.The SI Engine is commonly used in light-duty vehicles like motorcycles, cars, etc.These engines are commonly known as gasoline engines…
A pump is a mechanical device or hydraulic machine that converts mechanical energy to hydraulic energy. The pump gives pressure energy to the fluid at its outlet.A reciprocating pump is a special type of pump in which the reciprocating motion of a piston is used to pump water to the required area.Reciprocating pumps are mainly…
This process is named as vapour compression refrigeration system because the vapour is compressed in this system to produce refrigeration.Vapour Compression Refrigeration Systems are the most commonly used refrigeration system among all the refrigeration system.In this system, the working fluid undergoes phase change twice from liquid to vapour and again from vapour to liquid.In this type of…
Impulse Turbine is defined as the turbine in which high-velocity jets of water or steam hits the blades of the turbine to rotate the turbine and produce electricity using this rotation. The impulse turbine is named so because it acts on the impulsive force created during the striking of the water jet to the turbine blades.In the impulse…
Axial Flow Compressor is a type of compressor in which the working fluid flows parallel to the axis of rotation of the rotor or axially.In this compressor, the working fluid is compressed by first accelerating the fluid and then diffusion it to increase its pressure. Compressors are mechanical devices used to compress fluids. In other words, they…