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$($WRITE THE RIGHT ANSWER IN THE TABLE BELOW$)$ properties is by preheating the weld area prior to welding.

$2.$

nitations of Shell molding is that it is more expensive than investment casting.

ing is often used as a primary manufacturing process to produce dimensional tolerances, $)$ Cutting is often used as a primary manufacturing process to produce dimen powder processing.

$5.($ T $)$ In Spot welding, Faying surfaces is another name for the contact area between electrodes and the work piece.

$6.($ I $)$ In drop hammer process, the speed are high; therefore the high forming times minimize cooling of the hot forging, allowing the forging of complex shapes, particularly with thin and deep recesses.

$7.()$ Turning and drilling are both machining processes in which a single point cutting tool is utilized.

$8.($ T $)$ In open die forging, flash is formed by metal that flows beyond die cavity into small gap between die plates.

$9.($ T $)$ The metal removal rate in turning is proportional to feed rate and the average diameter of the work piece.

$10.(T)$ In spot welding. Resistance welding $($RW$)$ covers a number of processes in which the heat required for welding is produced by means of the frictional heat between the two members to be joint.

$11.($ T $)$ Cutting can be economically used as a primary manufacturing process if production volumes or material costs are low.

$12.$ Forging denotes a family of processes by which plastic deformation of the workpiece is carried out by tensile forces

$13.()$ In forging, filling and flash occur when work piece volume is greater than the cavity volume.

$14.$ Direct extrusion $($forward extrusion$)$ : the die moves toward the billet; thus, except at the die there is no relative motion at the billet$-$container interfa there is no relative motion at the billet$-$container interface.

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