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Machine Design

Machine Design
When a load W is applied suddenly on a bar of cross-sectional area A, the stress induced in the bar will be

2W/A
W/2A
W/A
3W/A

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Machine Design
A single strap butt joint is always in __________ shear.

None of these
Double
Single
Triple share

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Machine Design
The steel pulleys are __________ in weight than cast iron pulleys of the same capacity.

Moderate
None of these
Lighter
Heavier

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Machine Design
Lewis form factor for 14½° composite and full depth involute system is (where T = Number of teeth)

0.175 - (0.841/T)
0.154 - (0.912/T)
0.124 - (0.684/T)
None of these

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Machine Design
Guest's theory of failure is applicable for following type of materials

Brittle
Ductile
Elastic
Plastic

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Machine Design
The resultant axial load on a bolt depends on

External load applied
All of these
Initial tension
Relative elastic yielding (springness) of the bolt and the connected member

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