The Advantage of Shell Moulding Is

Q15: Which of the following is used as

Q16: All of the following are non-destructive method

Q17: All of the following are boring tools

Q18: The advantage of oxygen enriched cupola is<br>A)higher

Q19: For sterite refractory bricks are attacked by<br>A)basic

Q20: Addition of nickel to cast iron increases<br>A)hardness<br>B)corrosion

Q21: The solidification shrinkage of carbon steel is

Q22: Magnesium aluminium alloys are grain refined by

Q24: Polystyrene often used as a consumable pattern

Q25: As a result of melting in cupola,