Manufacturing And Production Technology
The primary purpose of a sprue in a casting mould is to

Act as a reservoir for molten metal
Feed molten metal from the pouring basin to the gate
Feed the casting at a rate consistent with the rate of solidification
Help feed the casting until all solidification takes place

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Manufacturing And Production Technology
Which of the following statement is incorrect with reference of lathe cutting tools?

The nose is the corner, arc or chamfer joining the side cutting and the end cutting edges
The flank of the tool is the surface or surfaces below and adjacent to the cutting edges
The heel is that part of the tool which is shaped to produce the cutting edges and face
The base is that surface of the shank which bears against the support and takes tangent pressure of the cut

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