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Machine Design

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

Double
Half
None of these
Same

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Machine Design
The included angle for the V-belt is usually

10°-20°
30°-40°
40°-60°
60°-80°

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

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Machine Design
A special case of ductility which permits materials to be rolled or hammered into thin sheets, is called

Malleability
Elasticity
Plasticity
Ductility

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Machine Design
Whether any core is required in wire ropes

Sometimes
Yes
Rarely
No

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Machine Design
When two non-intersecting and non-coplanar shafts are connected by gears, the arrangement is known as

Helical gearing
Bevel gearing
Spiral gearing
Spur gearing

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