61. Which of the following coupling is used to connect two shafts which have both lateral and angular misalignment?
62. For applications involving high stresses in one direction only the following type of thread would be best suited
63. If an application calls for stresses on screw threads in one direction only, then the following type of thread would be best suited
64. According to I.B.R., the efficiency of a triple riveted butt joint with double straps of unequal width (5 rivets per pitch length) should be
65. Fabric belts are used in industrial applications because
66. A coupling used to connect two perfectly aligned shafts, is
67. Rankine Gordon formula for buckling is valid for
68. The belt slip occurs due to
69. The lead angle of a worm is 22.5°. Its helix angle will be
70. The cross-section of the arm of a bell crank lever is
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