A Casting Process Which Can Produce Cylinders by Inserting Cores

Q11: As the moisture content of sand increases<br>A)permeability

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

Q17: Rough surface of casting may result from<br>A)high

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