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Machine Design

Machine Design
When a material is subjected to fatigue loading, the ratio of the endurance limit to the ultimate tensile strength is

0.5
0.2
0.65
0.35

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Machine Design
The velocity of sliding __________ the distance of the point of contact from the pitch point.

Is directly proportional to
Is inversely proportional to
Does not depend upon
Is equal to cos φ multiplied by

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Machine Design
Screws used for power transmission should have

Low efficiency
Very fine threads
Strong teeth
High efficiency

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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

Ductility
Malleability
Elasticity
Plasticity

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Machine Design
If the tearing efficiency of a riveted joint is 75%, then the ratio of diameter of rivet to the pitch is equal to

0.2
0.5
0.25
0.6

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Machine Design
A cotter joint is used to connect two __________ rods.

None of these
Co-axial
Parallel
Perpendicular

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