81. There are 150 gearwheels in a box, out of which 112 are within the required tolerance, 21 are below and rest are above the required tolerance. If the selection is done without replacement, the combined probability of randomly selecting a gearwheel below the tolerance and then a second one above the tolerance is
82. A body which absorbs all incident thermal radiation.
83. With decrease in radius of curvature in bending, the strain will
84. An isotropic metal matrix composite related to
85. Which of following is correct about hardness
86. The process by which screw dislocation may leave slip plane
87. The process of plastically deforming metals/alloys by passing it between rolls is known as
88. Why is nitriding not used for plain carbon steels?
89. The basal plane and chief slip direction for Hexagonal closed packed structure is
90. The molecular mass of a polymer chain divided by the molecular mass of its mer
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