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Machine Design

Machine Design
The draw of cotter need not exceed

3 mm
5 mm
20 mm
10 mm

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Machine Design
The included angle for the British standard whitworth thread is

29°
47.5°
60°
55°

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Machine Design
The ratio of endurance limit in shear to the endurance limit in flexure is

0.5
0.4
0.55
0.33

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Machine Design
A sliding bearing which can support steady loads without any relative motion between the journal and the bearing, is called

Hydrostatic lubricated bearing
Zero film bearing
Hydrodynamic lubricated bearing
Boundary lubricated bearing

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Machine Design
A shaft is subjected to a maximum bending stress of 80 N/mm² and maximum shearing stress equal to 30 N/mm² at a particular section. If the yield point in tension of the material is 280 N/mm² and the maximum shear stress theory of failure is used, then the factor of safety obtained will be

3.5
2.5
3.0
2.8

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Machine Design
A V-belt designated as B 4430 LP has

4430 mm as nominal pitch length
4430 mm as centre distance between pulleys
4430 mm as diameter of large pulley
4430 mm as diameter of small pulley

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