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
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

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

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

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