Question: The purpose of riser is: (a) Feed the casting at a rate consistent with the rate of solidification (b) Act as a reservoir for molten

The purpose of riser is:

(a) Feed the casting at a rate consistent with the rate of solidification

(b) Act as a reservoir for molten metal

(c) Help in feeding the casting until the solidification takes place

(d) Feed molten metal from pouring basin to the gate

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