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Machine Design

Machine Design
Rankine's theory is used for

Brittle materials
Ductile materials
Elastic materials
Plastic materials

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Machine Design
The objective of caulking in a riveted joint is to make the joint

Free from stress
Stronger in tension
Free from corrosion
Leak-proof

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Machine Design
When a bolt and nut is made of mild steel, then the effective height of nut is made equal to (where d = Nominal diameter of bolt)

0.5 d
d
1.25 d
0.75 d

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Machine Design
Allen bolts are

Used in aircraft application
Self locking bolts
Designed for shock load
Provided with hexagonal depression in head

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Machine Design
The ratio of endurance limit in shear to the endurance limit in flexure is

0.33
0.55
0.5
0.4

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Machine Design
The resilience of a bolt may be increased by

Decreasing its shank diameter
Increasing its shank diameter
Decreasing its length
Increasing its length

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