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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
43832
1

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Machine Design
When the screw in a mechanical screw jack rotates, the load kept on the top of it moves

Axially upwards or downwards
Axially upwards
Axially downwards
None of these

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Machine Design
I.S. specifies following total number of grades of tolerances

18
22
20
16

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Machine Design
When a helical compression spring is cut into halves, the stiffness of the resulting spring will be

Same
One-fourth
Double
One-half

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Machine Design
The period during which the cam follower remains at rest, when cam moves, is known as

Dwell period
Idle period
Fixed period
Constant period

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Machine Design
When the bolt is very yielding as compared to the connected members, then the resultant load on the bolt will be equal to the

External load applied
Sum of the initial tension and external load applied
Initial tension or external load, whichever is greater
Initial tension

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