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

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

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Manufacturing And Production Technology
Which of the following statement is correct about hot machining?

All of these
It is used for machining high strength and high temperature resistant materials.
It requires less power than machining metals at room temperature.
The rate of tool wear is lower.

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