Machine Design
The shock absorbing capacity of a bolt may be increased by

Decreasing its shank diameter
Tightening the bolt properly
Making the shank diameter equal to core diameter of thread
Increasing its shank diameter

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Machine Design
Tapered roller bearings can take

Radial load only
Axial load only
Both radial and axial loads and the ratio of these being less than unity
Both radial and axial loads and the ratio of these being greater than unity

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

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