The diaphragm moulding machine is used to

A. Ram the sand harder at the pattern face with decreasing hardness towards the back of the mould

B. Ram the sand harder at the back of the mould and softer on the pattern face

C. Produce uniform packing of sand in the mould

D. Give uniform sand hardness throughout the mould

Please do not use chat terms. Example: avoid using "grt" instead of "great".

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  4. When the file is moved to and fro over the work, it is known as
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  6. The diaphragm moulding machine is used to
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  12. Galvanising is a
  13. A pattern maker's shrinkage rule considers
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  15. A mortise gauge is a
  16. For smoothing and cleaning out depressions in the mould, a __________ is used.
  17. A moving mandrel is used in
  18. In TIG arc welding, the welding zone is shielded by an atmosphere of
  19. In a _________, the molten metal is poured and allowed to solidify while the mould is revolving.
  20. The draft or taper allowance on casting is generally
  21. Thread rolling is restricted to
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  27. The machining allowance provided on patterns depends upon
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  30. A casting defect which occurs due to improper venting of sand is known as