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Machine Design

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

(p - d) t.σc
n.d.t.σc
p.t.σc
p.d.σc

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Machine Design
According to I.B.R., the factor of safety of riveted joint should not be less than

2
4
1
3

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Machine Design
Which of the following bearing is preferred for oscillating conditions?

Taper roller bearing
Angular contact single row ball bearing
Needle roller bearing
Double row roller bearing

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Machine Design
When the material of key and shaft is same, and the width of key is one-fourth of the diameter of shaft (d), then length of key will be

0.8 d
1.8 d
1.2 d
1.57 d

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Machine Design
Rankine's theory is used for

Plastic materials
Brittle materials
Elastic materials
Ductile materials

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Machine Design
The shock resistance of steel is increased by adding

Nickel
Nickel and chromium
Chromium
Cobalt and molybdenum

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