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Machine Design

Machine Design
The shock resistance of steel is increased by adding

Chromium
Nickel
Nickel and chromium
Cobalt and molybdenum

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Machine Design
The ultimate strength of steel in tension in comparison to shear is in the ratio of

0.12638888888889
0.042361111111111
0.085416666666667
0.084027777777778

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Machine Design
In order to have smooth operation, the minimum number of teeth on the smaller sprocket, for moderate speeds, should be

17
15
21
25

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Machine Design
The edges of the plates for cylindrical vessels are usually bevelled to an angle of 80° for

Fullering and caulking
Reducing stress concentration
Safety
Ease of manufacture

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Machine Design
The fatigue life of a part can be improved by

Shot peening
Polishing
Electroplating
Coating

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Machine Design
When the length of the journal is equal to the diameter of the journal, then the bearing is said to be a

Short bearing
Long bearing
Square bearing
Medium bearing

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MORE MCQ ON Machine Design

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