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Machine Design

Machine Design
If a spring is cut down into two springs, the stiffness of cut springs will be

Same
Double
Half
None of these

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Machine Design
The endurance limit for a mirror polished material will be __________ as compared to unpolished material.

None of these
More
Less
Same

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

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

1
4
2
3

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Machine Design
In second type of levers,

Fulcrum is in between the load and effort
Effort is in between the fulcrum and load
None of these
Load is in between the fulcrum and effort

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Machine Design
Which of the following welded joint is designed for shear strength?

Butt welded joint
Transverse fillet welded joint
All of these
Parallel fillet welded joint

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