Machine Design
The building up of worn and undersized parts, subjected to repeated loads by electroplating is

Extremely hazardous
Best method
Cheapest method
Has no effect as regards fatigue strength

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Machine Design
In case of V belt drive

The belt should not touch the bottom of groove in the pulley
The belt should not touch the sides of groove in the pulley
None of these
The belt should touch the bottom of groove in the pulley

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

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