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Machine Design

Machine Design
In a marine flange coupling, the thickness of flange is taken as

d/4
d/2
d/3
3d/4

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Machine Design
The ball bearings are, usually, made from

High carbon steel
Medium carbon steel
Low carbon steel
High speed steel

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Machine Design
A screw will be self locking, if

Friction angle is more than helix angle
Efficiency of screw is 100%
Friction angle is less than helix angle
Friction angle is equal to helix angle

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Machine Design
The stress induced in the belt is,

Tensile stress
Compressive stress
Torsional shear stress
Direct shear stress

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

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Machine Design
A backing ring is used inside the pipe joint when making a

Fillet weld
Butt weld
Socket weld
Sleeve weld

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MORE MCQ ON Machine Design

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