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Machine Design

Machine Design
Rankine's theory is used for

Elastic materials
Brittle materials
Plastic materials
Ductile materials

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

More
None of these
Less
Same

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Machine Design
In designing thick cylinders, the equation used is

Lame's equation
All of these
Clavarinos' equation
Birnie's equation

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Machine Design
While designing a screw in a screw jack against buckling failure, the end conditions for the screw are taken as

Both the ends hinged
One end fixed and the other end hinged
One end fixed and the other end free
Both the ends fixed

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Machine Design
Allen bolts are

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

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Machine Design
When an open coiled helical compression spring is subjected to an axial compressive load, the maximum shear stress induced in the wire is (where D = Mean diameter of the spring coil, d = Diameter of the spring wire, K = Wahl's stress factor, and W = Axial compressive load on the spring)

(8WD/ πd3) × K
(4WD/ πd3) × K
(2WD/ πd3) × K
(WD/ πd3) × K

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