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Machine Design

Machine Design
The standard length of the shaft is

All of these
6 m
5 m
7 m

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Machine Design
In designing a flange coupling, the pitch circle diameter of bolts is taken as (where d = Diameter of the shaft)

5 d
3 d
2 d
4 d

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Machine Design
When spring index increases, the value of Wahl's stress factor

Increases linearly
Increases exponentially
Decreases linearly
Remains same

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Machine Design
In a marine flange coupling, the thickness of flange is taken as

d/3
d/4
3d/4
d/2

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

Shot peening
Under stressing
Cold working
Surface decarburisation

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Machine Design
Fabric belts are used in industrial applications because

They can work at high temperature
They are cheap
None of these
They are unaffected by moisture and humidity

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