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Machine Design

Machine Design
Rankine's theory is used for

Ductile materials
Elastic materials
Brittle materials
Plastic materials

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Machine Design
Which of the following is an anti-friction bearing?

Needle bearing
Collar bearing
Journal bearing
Pedestal bearing

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Machine Design
A tapered key which fits in a key way in the hub and is flat on the shaft, is known as

Gib-head key
Wood ruff key
Flat saddle key
Feather key

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Machine Design
The objective of caulking in a riveted joint is to make the joint

Free from stress
Free from corrosion
Leak-proof
Stronger in tension

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Machine Design
When the bearing is subjected to large fluctuations of load and heavy impacts, the bearing characteristic number should be _________ the bearing modulus.

15 times
10 times
20 times
5 times

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Machine Design
When a closely coiled helical spring is subjected to a couple about its axis, the stress induced in the wire material of the spring is

A combination of bending stress and direct shear stress
Bending stress only
A combination of torsional shear stress and bending
Direct shear stress only

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