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Q. What is Squeeze time? It is the time between the initial application of the electrode pressure on the work and the initial application of current to make the weld. During th
Derive and solve a model of an insulated water tank with a changing level (i.e., changing tank volume). There is only one in ow stream with a flow rate of 1 kg/sec for t The
Explain lami's theorem: Sol.: Lami's theorem states that "If the three coplanar forces which are acting at a point be in equilibrium, then every force is proportional to sin
Cermets Such are the variation of cemented carbides while the carbides of W and Ti are solidified in the softer matrix of Co and Nickel to get high hardness, resistance to hig
In case of welded vessels why is stress relieving in the form of post-weld treatment necessary? When a metal is welded together the point at which two surfaces are joined are s
Casting processes Casting processes. Here, the metal in the molten state is poured into a mould and allowed to solidify into a shape. The mould may be expendable or permanent.
Define Jigs and Fixtures Jigs: A jig is a device in which a component is held and located for specified operations in such a way that it will guide one or more cutting tool
A hollow circular shaft has an internal diameter of 48 mm and an external diameter of 54 mm. Calculate the shear stress produced at the outer and inner surfaces of the shaft when t
Ask . A vessel having a volume of 0.6 m3 contains 3.0 kg of liquid water and water vapour mixture in equilibrium at a pressure of 0.5 MPa. Calculate : (i) Mass and volume of liquid
Welding is a material joining process used in making welds and a weld is a localised coalescence of metals or non metals produced either by heating the materials to suitable temper
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