31. __________ is the most important element, which controls the physical properties of steel.
32. Friction factor for fluid flow in pipe does not depend upon the
33. Transition from laminar flow to turbulent flow in fluid flow through a pipe does not depend upon the
34. The property of material, by which a given amount of energy is absorbed by it, without plastic deformation is called
35. Filler material used in welding having the lowest melting point out of the following is
36. A cylinderical rod subjected to a tensile strain within the elastic limit undergoes a volume change. If the volume strain is equal to half the tensile strain, then the Poisson's ratio of the rod is
37. Lime contains about 90% CaO. Percentage CaO present in limestone is about
38. Limestone addition in the blast furnace is done to flux __________ present in the raw materials.
39. The most detrimental impurity in high pressure boiler feed water is
40. Air/fuel ratio by weight for combustion of methane with theoretical quantity of air will be about
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