Polystyrene often used as a consumable pattern material has a relative density of

Related MCQs

• Polystyrene is generally available in the form of
• In case of consumable patterns
• Consumable patterns are made of
• Normal shrinkage allowance for aluminium is 18 mm per metre and that for cast iron 10 mm per metre. If the metal pattern is to be made of aluminium and the casting is to be of cast iron, the shrinkage allowed on wooden master pattern will be
• The disadvantage in using wood as the material for pattern making is
• Wood used for pattern making has knots. This is likely to affect
• The moulding tool used for finishing/repairing the sand mould after pattern withdrawal is termed as
• Pattern used in foundry shop is
• When wooden patterns with metallic coating are to be used, the metal sprayed on wooden pattern could be
• If an old casting is to be used as a pattern, to account for various allowances.