Blow holes in castings are due to

Foundry Technology Mcqs
BILAL KHATTAK0

A.high moisture content of the sand
B.low permeability of sand
C.excessive fine grains and gas producing ingredients
D.any of the above

Related Mcqs:

  1. Scabs may be caused by
  2. The defect blow hole in castings is caused due to
  3. Steel recommended for induction hardening should have
  4. The slow rate of decomposition of fallen logs in nature is due to their ___________.
  5. Permeability of a foundry sand is
  6. Permeability of sand decreases as
  7. What is loess?
  8. Cohesiveness of sand depends on
  9. Rough surface of casting may result from
  10. Swell is a defect in castings due to

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