Rough Surface of Casting May Result from

Q12: According to Chvorinov's equation, the solidification time

Q13: Shrinkage cavity in a casting may be

Q14: The function of riser is<br>A)to allow the

Q15: Which of the following holes appear on

Q16: A casting process which can produce cylinders

Q18: The advantage of permanent mould casting is<br>A)reduced

Q19: Moisture content of the moulding sand is

Q20: Contraction allowance for grey cast iron is

Q21: When sulphur is to be removed from

Q22: In investment casting the pattern is made