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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

43832
1
4
2

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Machine Design
For steel, the ultimate strength in shear as compared to ultimate strength in tension is

43864
43832
43834
43833

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Machine Design
A backing ring is used inside the pipe joint when making a

Butt weld
Socket weld
Sleeve weld
Fillet weld

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Machine Design
In the case of an elastic bar fixed at upper end and loaded by a falling weight at lower end, the shock load produced can be decreased by

Increasing the cross-section area of bar
Would depend upon other factors
Decreasing the cross-section area of bar
Remain unaffected with cross-section area

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Machine Design
The included angle between the sides of V-belt is

45°
38°
40°
60°

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Machine Design
At low temperatures (say 75°C) the notched bar impact value of steel

Increases markedly
Decreases markedly
Depends on heat treatment carried out
Remain same

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