Q.1) Circle True or False for the following questions. (07 Marks) a) Manufacturi

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Q.1) Circle True or False for the following questions. (07 Marks) a) Manufacturing is a method of converting now materials into semi finished products TIF b) All welding processes that take place without melting of the work pieces TIF e) Curting and forming operations performed on relatively thin sheets of metal T IP d) Sheet metal eutting operasion along a straight tine between two cuting edges is called Shearing Operation's TF e) Deformation process in which work thickness is reduced by compressive forces exerted by two opposing rolls is called extrusion T/F ) A material removal process in which a sharp cuting tool is used to mechanically cut away material so that the desired part geometry remains is called Machining. T F g) There is so difference in boring and drilling T F Q.2) Select the best answer for the following questions. (07 Marks) a) Common joining processes are Adhesive bonding . Bending . Broaching . None of them b) Mechanical peoperties of the welded joint depend Rate of heat application at the weld The thermal peoperties of metals . The magnitude of the applied heat . All of them None of them c) Creep is The failure of a material due to cyclic oe repeated stresses The elongation caused by the steady and continoous application of a load over long period of time Both 1&2 .None of them d) Which one is not related to casting? Melt the metal Pour it into a mold All of them Channel through which molten metal flows into cavity from outside of mold · Let it freeze Both 1" and 2nd e) Gating system is Cavity provides the external surfaces of the cast part . Is a source of liquid metal to compensate for shrinkage of the part during solidification . None of them

Explanation / Answer

a) False : It is a process for converting raw material to finished products

b)False : Some process are taken with melting of workpiece

c)True : Its taken on relatively thin sheets of metals

d)True : It is called as shearing operation when performed between two cutting edges on a straight line

e)False: In extrusion process die are used and not rolls.

f)True : Machining process involves material removal by sharp edge cutting tools.

g) True: Boring is a process of enlarging a hole that is already done whrereas drilling envoles making a new hole.

Q2. a) adhesive bonding is a process for joining

b) all of the above. Mechanical properties depend on rate and apllied heat as well as metal which is to be joined.

c)creep is due to progressive deformation under constant stress therefore correct option is (2)

d)casting does not involes melting of metal so option (1)

e) option (1) it is a system for providing molten metal to mould

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