71. Castle nut is a locking device in which
72. When the length of the journal is equal to the diameter of the journal, then the bearing is said to be a
73. Factor of safety for fatigue loading is the ratio of
74. Crowning on pulley helps
75. A bench vice has following type of threads
76. Applications in which stresses are encountered in one direction only uses following type of threads
77. According to Indian standard specifications, 100 H6/g5 means that the
78. The railway carriage couplings have
79. Gear box is used
80. The centre distance between two meshing involute gears is equal to
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