In a gating system, the ratio 1: 2: 4 represents

A. Sprue base area: runner area: ingate area

B. Pouring basin area: ingate area: runner area

C. Sprue base area: ingate area: casting area

D. Runner area: ingate area: casting area

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  1. Larger end cutting edge angle _________ tool life.
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  12. Larger than 15° side cutting edge angle
  13. Glazing in grinding wheels takes place when the
  14. High speed steel drills can be operated at about _________ the speed of high carbon steel drills.
  15. What is the type of welding defect caused due to shrinkage during solidification and by weld stresses…
  16. Green sand mould indicates that
  17. The lip clearance angle is the angle formed by the
  18. Discontinuous chips are formed during machining of
  19. In metal machining, the zone where the heat is generated due to friction between the moving chip and…
  20. It is required to cut screw threads of 2 mm pitch on a lathe. The lead screw has a pitch of 6 mm. If…
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  22. A __________ grinding wheel is used to grind soft materials.
  23. In the relation VTn = C, the value of n for ceramic tools is
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  26. Surface grinding is done to produce
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