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Machine Design

Machine Design
Rankine Gordon formula for buckling is valid for

Short and long column
Short column
Long column
Very long column

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Machine Design
If a shaft made from ductile material is subjected to combined bending and twisting moment, calculations based on which one of the following failure theories will give the most conservative value?

Maximum shear stress theory
Maximum strain energy theory
Maximum distortion energy theory
Maximum principal stress theory

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Machine Design
Which one of the following loading is considered for the design of axles?

Bending moment only
Combined bending moment and twisting moments
Combined action of bending moment, twisting moment and axial thrust
Twisting moment only

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Machine Design
The property of a material which enables it to be drawn into wires with the application of a tensile force, is called

Plasticity
Malleability
Elasticity
Ductility

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Machine Design
The usual proportion for the width of key is (where d = Diameter of shaft or diameter of hole in the hub)

d/2
d/8
d/4
d/6

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Machine Design
Wire ropes as compared to cotton ropes

Can withstand shock loads
All of these
Are lighter in weight
Offer silent operation

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