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Machine Design

Machine Design
Crushing resistance required to crush the rivet per pitch length is

(p - d) t.σc
p.d.σc
p.t.σc
n.d.t.σc

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Machine Design
If the tearing efficiency of a riveted joint is 75%, then the ratio of diameter of rivet to the pitch is equal to

0.25
0.6
0.2
0.5

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

One-half
Same
One-fourth
Double

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Machine Design
Maximum principal stress theory is applicable for

Brittle materials
Ductile materials
Elastic materials
All of these

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Machine Design
The rolling contact bearings are known as

Thin lubricated bearings
Plastic bearings
Thick lubricated bearings
Antifriction bearings

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Machine Design
When a close coiled helical spring is compressed, its wire is subjected to

Tension
Shear
All of these
Compression

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