Casting - Casting objective questions and answers

21. Cold ducts are.......

   A.Forging defects due to insufficient filling

   B.Pores in welds

   C.Casting defects due to two streams not able to fuse due to being cool

   D.Casting defects due to moisture

22. The sand is packed on pit moulds with.......

   A.Manually

   B.Squeezers

   C.Jolt machines

   D.Sand slingers

23. Ferrous alloys are usually cast by.........

   A.Hot chamber machine

   B.Cold chamber machine

   C.Die casting machine

   D.None of the above

24. The hot chamber die casting method is used to cast......

   A.Brass

   B.Magnesium

   C.Aluminium

   D.All of the above

25. In general, the drift on castings is of the order of.......

   A.1-5 mm/m

   B.5-10 mm/m

   C.10-15 mm/m

   D.15-20 mm/m

   E.20-30 mm/m

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