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Machine Design

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

p.t.σc
n.d.t.σc
(p - d) t.σc
p.d.σc

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Machine Design
The following type of nut is used with alien bolt

Hexagonal nut
Slotted nut
Castle nut
Any one of the above

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Machine Design
Pick up wrong statement. Fatigue strength can be increased by

Cold working
Shot peening
Hot working
Grinding and lapping surface

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Machine Design
The connecting rod bolts are tightened up so that tightening stress

Is 50% of yield point
Approaches yield point
Is just sufficient to hold parts together
Is about yield point divided by safety factor

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Machine Design
When a material is subjected to fatigue loading, the ratio of the endurance limit to the ultimate tensile strength is

0.65
0.5
0.2
0.35

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Machine Design
Resilience of a material is important, when it is subjected to

Fatigue
Combined loading
Shock loading
Thermal stresses

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