Machine Design
In skew bevel gearing, the axes of shafts are

Intersecting and the teeth are curved
Non-intersecting and nonparallel and the teeth are curved
None of these
Non-intersecting and non-parallel and the teeth are straight

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Machine Design
Cap screws are

Used to prevent relative motion between parts
Slotted for a screw driver and generally used with a nut
Provided with detachable caps
Similar to small size tap bolts except that a greater variety of shapes of heads are available

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Machine Design
According to I.B.R., when the thickness of the boiler shell (t) is less than 8 mm, then the diameter of the rivet hole (d) is obtained by

Equating tearing resistance of the plate to the shearing resistance of the rivets
Equating tearing resistance of the plate to the crushing resistance of the rivets
Equating shearing resistance to the crushing resistance of the rivets
None of these

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