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Machine Design

Machine Design
The ratio of circumferential stress to longitudinal stress in a thin cylinder subjected to an internal pressure is

4
2
1
43832

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Machine Design
The usual proportion for the width of key is (where d = Diameter of shaft or diameter of hole in the hub)

d/4
d/2
d/6
d/8

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Machine Design
A feather key is generally

Loose in shaft and tight in hub
Tight in both shaft and hub
Loose in both shaft and hub
Tight in shaft and loose in hub

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Machine Design
According to Indian standards, total numbers of fundamental deviations are

15
20
10
25

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Machine Design
The load cup of a screw jack is made separate from the head of the spindle to

Enhance the load carrying capacity of the jack
Reduce the effort needed for lifting the working load
Reduce the value of frictional torque
Prevent the rotation of load being lifted

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Machine Design
A shaft is subjected to

Shear stresses
Bending stresses
Combined bending and shear stresses
All of these

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