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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

0.2
0.5
0.65
0.35

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Machine Design
The lower deviation is the algebraic difference between the

Actual size and the corresponding basic size
Maximum limit and the basic size
None of these
Minimum limit and the basic size

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Machine Design
While designing a screw in a screw jack against buckling failure, the end conditions for the screw are taken as

One end fixed and the other end hinged
One end fixed and the other end free
Both the ends fixed
Both the ends hinged

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

20
10
15
25

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Machine Design
Maximum principal stress theory is applicable for

Brittle materials
All of these
Elastic materials
Ductile materials

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Machine Design
Two rigid plates are clamped by means of bolt and nut with an initial force F. After tightening, a separating force P (P < F) is applied to the lower plate, which in turn acts on the nut. The tension in the both after this is

F + P
F.P
P
F

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