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Machine Design

Machine Design
The shear modulus of resilience is proportional to

(Shear stress)²
Shear stress
(Shear stress)⁴
(Shear stress)3

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Machine Design
A screw is said to be a self locking screw, if its efficiency is

More than 50%
Less than 50%
None of these
Equal to 50%

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Machine Design
For tight leakage joints, following type of thread is best suited

Metric
Buttress
NPT (national pipe threads).
Square

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Machine Design
The belt slip occurs due to

Heavy load
Any one of the above
Loose belt
Driving pulley too small

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Machine Design
In case of pressure vessels having open ends, the fluid pressure induces

None of these
Longitudinal stress
Shear stress
Circumferential stress

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Machine Design
The design calculations for members subject to fluctuating loads with the same factor of safety, yield the most conservative estimates when using

None of these
Goodman relation
Soderberg relation
Gerber relation

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