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Machine Design

Machine Design
When a material is subjected to fatigue loading, the ratio of the endurance limit to the ultimate tensile strength is

0.5
0.35
0.2
0.65

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Machine Design
In V-belt drive, belt touches

At sides only
At bottom
Could touch anywhere
Both at bottom and sides

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Machine Design
A transmission shaft includes

Counter shaft
All of these
Over head shaft
Line shaft

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

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

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Machine Design
A column of length l is fixed at both ends. The equivalent length of the column is

l
2 l
l/√2
l/2

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Machine Design
Which of the following is not correct procedure to increase the fatigue limit?

Surface decarburisation
Under stressing
Cold working
Shot peening

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