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Machine Design

Machine Design
In most machine members, the damping capacity of the material should be

Low
Could be anything
High
Zero

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Machine Design
A screw is said to be a self locking screw, if its efficiency is

More than 50%
Less than 50%
None of these
Equal to 50%

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Machine Design
The draw of cotter should not be more than

12 mm
8 mm
6 mm
3 mm

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Machine Design
The ratio of circumferential stress to longitudinal stress in a thin cylinder subjected to an internal pressure is

2
43832
4
1

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Machine Design
The notch sensitivity q is expressed in terms of fatigue stress concentration factor Kf and theoretical stress concentration factor Kt as

(Kt - 1)/ (Kf - 1)
(Kf + 1)/ (Kt + 1)
(Kf - 1)/ (Kt - 1)
(Kt + 1)/ (Kf + 1)

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Machine Design
The relation between the pitch of the chain (p) and pitch circle diameter of the sprocket (D) is given by (where T = Number of teeth on the sprocket)

p = D sin (180°/T)
p = D sin (120°/T)
p = D sin (360°/T)
p = D sin (90°/T)

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