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Machine Design

Machine Design
The constant factor in case of R10 series of preferred numbers is

1.58
1.26
1.06
1.12

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Machine Design
The process extensively used for making bolts and nuts is

Extrusion
Cold heading
Hot piercing
Cold peening

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Machine Design
Which of the following pipe joints would be suitable for pipes carrying steam?

Expansion
Threaded
Flanged
Bell and spigot

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Machine Design
If a bearing is designated by the number 305, it means that the bearing is of

Light series whose bore is 5 mm
Medium series whose bore is 25 mm
Light series whose bore is 25 mm
Medium series whose bore is 5 mm

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Machine Design
A double strap butt joint (with equal straps) is

Always in single shear
Either in single shear or double shear
Always in double shear
Any one of these

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Machine Design
A thin spherical shell of internal diameter d is subjected to an internal pressure p. If σt is the tensile stress for the shell material, then thickness of shell is equal to

pd/4σt
pd/2σt
pd/3σt
pd/σt

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