A sprue is 300 mm long and has a diameter of 125 mm at the top. The molten metal level in the…

A sprue is
300 mm long and has a diameter of 125 mm at the top. The molten metal level in
the pouring basing (which is much larger than the top of the sprue) is taken to
be 75 mm from the top of the sprue for design purposes. If a flow rate of 650
mm3/s is to be achieved, what should be the diameter at the bottom of the
sprue? Will the sprue aspirate? Explain.

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