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Machine Design

Machine Design
The included angle for the British Association thread is

47.3°
55°
29°
60°

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Machine Design
According to I.B.R., shearing resistance required to shear off the rivet per pitch length (in double shear) is (where n = Number of rivets per pitch length)

3 × (π/4) d² × τ × n
1.875 × (π/4) d² × τ × n
(π/4) d² × τ × n
2 × (π/4) d² × τ × n

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Machine Design
Taper on the cotter and slot is provided

On one side only
On none of the sides
May be provided anywhere
On both the sides

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Machine Design
Resilience of a material is important, when it is subjected to

Shock loading
Thermal stresses
Combined loading
Fatigue

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Machine Design
A sliding bearing in which although lubricant is present, the working surfaces __________ contact each other at least part of the time, is called boundary lubricated bearing.

Either A or B
None of these
Fully
Partially

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Machine Design
The function of cutting oil when threading a pipe is to

All of these
Help removes chips
Lubricate the dies
Provide cooling action

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