Often earing defects are found during deep drawing operation, because the

A. Surface finish of the sheet is poor

B. Sheet material has been given substantial spring back

C. Starting sheet has planer anisotropy due to its texture

D. Starting sheet has normal anisotropy due to its texture

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  12. The friction factor for the turbulent fluid flow in a rough pipe does not depend upon the
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  16. Limestone is added in the blast furnace (during pig iron manufacture) to
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  28. Cold heading or upsetting is categorised as the __________ process.
  29. Ferromagnetic materials owe their properties to __________ inner sub-shells.
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