Machine Design
For crank shaft bearings, the ratio of the length of the journal to its diameter is_________.

Equal to 1
Less than unity
None of these
Greater than unity

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Machine Design
Set screws are

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

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