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Machine Design

Machine Design
The pitch of threads on a Jock nut in comparison to pitch of nut is

Very fine
Coarser
Same
Finer

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Machine Design
Taper on the cotter and slot is provided

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

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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)

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

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Machine Design
According to Indian standards, total numbers of fundamental deviations are

25
10
15
20

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Machine Design
A shaft is subjected to

All of these
Combined bending and shear stresses
Bending stresses
Shear stresses

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Machine Design
The gears are termed as medium velocity gears, if their peripheral velocity is

30-50 m/s
1-3 m/s
3-15 m/s
15-30 m/s

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