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Machine Design

Machine Design
In standard taper roller bearings, the angle of taper of outer raceway is

15°
25°
5°
8°

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Machine Design
Which of the following bearing is preferred for oscillating conditions?

Needle roller bearing
Double row roller bearing
Taper roller bearing
Angular contact single row ball bearing

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Machine Design
A metal pipe of 1 m diameter contains a fluid having a pressure of 1 N/mm². If the permissible tensile stress in the metal is 20 N/mm², then the thickness of the metal required for making the pipe will be

15 mm
25 mm
5 mm
10 mm

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Machine Design
Which process will increase the fatigue duration of parts?

Electroplating
Shot-peening
De-carburisation
Finishing and polishing

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

12
20
18
8

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Machine Design
For a shaft diameter of 100 mm, the number of bolts in a flange coupling should be

8
6
4
10

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