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Machine Design

Machine Design
Rankine's theory is used for

Ductile materials
Elastic materials
Plastic materials
Brittle materials

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Machine Design
The suitable material for belt used in flour mill is

Balata gum
Rubber
Canvas or cotton duck
Leather

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Machine Design
The piston pin bearings in heavy duty diesel engines are

Cylindrical roller bearings
Spherical roller bearings
Tapered roller bearings
Needle roller bearings

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Machine Design
According to Indian standard specifications, a Grey cast iron designated by 'FG 200' means that the

Maximum compressive strength is 200 N/mm²
Maximum shear strength is 200 N/mm²
Minimum tensile strength is 200 N/mm²
Carbon content is 2%

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Machine Design
In order to obtain bolt of uniform strength

Tighten die bolt properly
Increase shank diameter
Increase its length
Drill an axial hole through head up to threaded portion so that shank area is equal to root area of thread

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Machine Design
The endurance limit of a material with finished surface in comparison to rough surface is

More or less depending on quantum of load
Same
Less
More

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