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Machine Design

Machine Design
In a flange coupling, the flanges are coupled together by means of

None of these
Studs
Headless taper bolts
Bolts and nuts

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

0.33
0.55
0.4
0.5

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Machine Design
When the material of key and shaft is same, and the width of key is one-fourth of the diameter of shaft (d), then length of key will be

1.8 d
1.57 d
0.8 d
1.2 d

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Machine Design
The ratio of driving tensions in V-belt drives is __________ flat belt drives.

cosec α times more than
sin α times less than
Equal to
sin α times more than

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Machine Design
Rankine's theory is used for

Elastic materials
Ductile materials
Brittle materials
Plastic materials

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Machine Design
According to Indian standards, a bolt thread of 6 mm size of coarse pitch and with allowance on the threads and normal tolerance grade is designated as

M8
M6 - 8d
M6
M8 - 6d

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