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Machine Design

Machine Design
Guest's theory of failure is applicable for following type of materials

Plastic
Elastic
Ductile
Brittle

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Machine Design
The bearings of medium series have capacity __________ over the light series.

20 to 30%
10 to 20%
30 to 40%
40 to 50%

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Machine Design
According to Indian standards, total numbers of tolerance grades are

18
20
12
8

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Machine Design
The buckling load will be maximum for a column, if

Both ends of the column are hinged
One end of the column is hinged and the other end is free
One end of the column is clamped and the other end is free
Both ends of the column are clamped

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Machine Design
The velocity factor for precision metallic gears cut with high accuracy and operating at velocities up to 20 m/s is equal to

6/ (6 + v)
3/ (3 + v)
0.75/ (0.75 + √v)
4.5/ (4.5 + v)

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Machine Design
The application of second type levers is found in

Handle of a hand pump
Hand wheel of a punching press
A pair of tongs
Lever of a loaded safety valve

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