Machine Design
When a nut is tightened by placing a washer below it, the bolt will be subjected to following type of loads

Tension
Compression
Combined loads
Shear

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Machine Design
Slenderness ratio is the ratio of

Maximum size of column to minimum size of column
Effective length of column to least radius of gyration of the column
Width of column to depth of column
Effective length of column to width of column

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Machine Design
A triple riveted butt joint with double straps of unequal width is to be designed for a boiler shell. The pitch of the rivets in the outer row is double the pitch in the inner row and zigzag riveting is proposed. Which of the following statement is correct?

There are five rivets per pitch length, out of which four are in double shear and one is in single shear
There are four rivets per pitch length, out of which two are in single shear and two are in double shear
There are four rivets per pitch length, all in double shear
There are five rivets per pitch length, all in double shear

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