51. Use of economiser in a boiler plant reduces the fuel consumption for steam generation by about __________ percent.
52. Joule-Thomson co-efficient is the ratio of
53. Percentage of argon (by volume) in dry atmospheric air is about
54. Iron has got __________ isotopes.
55. Addition of __________ to steel does not help in improving its machinability.
56. Density in the solid state is slightly less than that in its liquid state, in case of
57. On an average __________ fast neutrons are produced by nuclear fission of each atom of uranium-235.
58. A dummy activity is used in PERT network to describe the
59. __________ method of depreciation calculation ensures that the interest is charged on the cost of machine asset every year on the book value, but the rate of depreciation remains constant every year.
60. Eutectoid composition of carbon steel at room temperature is
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