A casting of size 100 mm 100 mm 50 mm is required. Assume volume shrinkage of casting as 2.6%. If the height of the riser is 80 mm and riser volume desired is 4 times the shrinkage in casting, what is the appropriate riser diameter in mm?

A casting of size 100 mm 100 mm 50 mm is required. Assume volume s

1.	A casting of size 100 mm 100 mm 50 mm is required. Assume volume shrinkage of casting as 2.6%. If the height of the riser is 80 mm and riser volume desired is 4 times the shrinkage in casting, what is the appropriate riser diameter in mm?
A.	14.38
B.	20.34
C.	28.76
D.	57.52
Answer» B. 20.34

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A casting of size 100 mm 100 mm 50 mm is required. Assume volume shrinkage of casting as 2.6%. If the height of the riser is 80 mm and riser volume desired is 4 times the shrinkage in casting, what is the appropriate riser diameter in mm?

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