The primary purpose of a sprue in a casting mould is to
A. Feed the casting at a rate consistent with the rate of solidification
B. Act as a reservoir for molten metal
C. Feed molten metal from the pouring basin to the gate
D. Help feed the casting until all solidification takes place
Answer: Option C
This Question Belongs to Mechanical Engineering >> Manufacturing And Production Technology
The carbide tools operating at very low cutting speeds (below 30 m/min)
A. Reduces tool life
B. Increases tool life
C. Have no effect on tool life
D. Spoils the work piece
The type of reamer used for reaming operation in a blind hole, is
A. Straight fluted reamer
B. Left hand spiral fluted reamer
C. Right hand spiral fluted reamer
D. Any one of these
High speed steel tools retain their hardness up to a temperature of
A. 250°C
B. 350°C
C. 500°C
D. 900°C
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