71. In a double effect evaporator operating with a thermo-compressor, the fraction of total water evaporated in the first and second effects respectively are
72. What is the bottom width of a most efficient hydraulic section of a rectangular channel?
73. Which impeller has a shroud or wall on one side only?
74. The temperature (in °C) within the cylinder of an internal combustion engine of a tractor ranges between
75. Farm yard manure contains about . . . . . . . . percentage of nitrogen.
76. Accurate and inclined placement of seeds to provide rows in two perpendicular airection is known as
77. The R pocket type disc separator is used for
78. Bernoulli's principle is based on the law of conservation of
79. What is the concentration of CO2 in the atmosphere?
80. Which of the following is not a measure of dispersion?
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