Which Wood Can Be Used for Making Patterns

Q4: A mould cracks after drying. It indicates<br>A)excess

Q5: In case of malleable iron castings, the

Q6: Inoculants are added to aluminium mainly for<br>A)grain

Q7: Permanent mould casting is also known as<br>A)chill

Q8: Consumable patterns are made of<br>A)polystyrene<br>B)wax<br>C)plaster of paris<br>D)any

Q10: In case of plaster moulding the mould

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