Manufacturing And Production Technology
For turning small taper on long workpiece, the suitable method is

By a taper turning attachment
By swiveling the compound rest
By setting over the tail stock
By a form tool

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

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

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