The ease with which welding of a give material can be done without producing any defect is called Weldability. Weldability can also be defined as the capability of a metal to be welded under the fabrication conditions imposed satisfactorily in the intended surface. Th…

Understanding the properties of fluids is essential to Analyse their behavior in working conditions. In this article the fluid properties namely mass density, specific weight, specific volume, specific gravity, viscosity, vapor pressure, compressibility and surface te…

A good boiler should have the following characteristics: The boiler should have maximum steam generation rate with minimum fuel consumption. It can be started or stopped quickly. Its initial cost, running and maintenance cost should not be high. Its erection time shou…

Shell-mold casting process is also known as shell molding process, is an expendable mold casting process that uses a resin covered sand to form the mold. In shell-mold casting process the mold is made like a shell i.e., the thin or hollow mold is used so that weight o…

The internal combustion engine is an engine in which the combustion of a fuel occurs with an oxidizer (usually air) in a combustion chamber that is an integral part of the working fluid flow circuit. In an internal combustion engine, the expansion of the high temperatu…

Various functions of cutting fluids are Cutting fluid cools the workpiece and tool by carrying away the heat generated during machining. It acts as lubricant at the friction zones, hence tool life increases. As friction get reduced, the forces and electricity power co…

Jigs and fixtures are essential work-holding and tool holding devices in industries. These devices facilitate clamping of workpiece on the machine tool in correct relationship with the cutting tool. Jigs and fixtures are often used in interchangeably and sometimes in p…

Some of the similarities between heat and work are described under. Heat and work are both transient phenomena. Systems never possess heat or work, but either or both cross the system boundary when a system undergoes a change of state. Both heat and work are boundary …

The advantages of liquid fuels over solid fuels are as follows: Requirement of less space for storage Higher calorific value Easy handling and transportation Better control of consumption by using valves and number of burners Absence of danger from spontaneous combust…

A Psychrometric chart can graphically represents the thermodynamic properties of air-water vapor mixture. Standard psychrometric charts are bounded by the dry-bulb temperature line (X – axis) and the vapor pressure or humidity ratio (Y – axis). The Left Hand Side of th…

In a liquid-cooling system, water or other solutions flow through the water jacket around the cylinder and cylinder head to absorb the heat. The hot liquid coming out of the water jacket is cooled in the radiator, where circulated air absorbs the heat from the radiato…