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Machine Design

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

8°
25°
5°
15°

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Machine Design
Shear stress theory is applicable for

Brittle materials
Elastic materials
Ductile materials
All of these

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Machine Design
Taper usually provided on cotter is

1 in 24
1 in 10
1 in 40
1 in 5

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Machine Design
A thin spherical shell of internal diameter d is subjected to an internal pressure p. If V is the storage capacity of shell, then its diameter will be

(6V/ π)3
(6V/ π)2
(6V/ π)1/2
(6V/ π)1/3

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Machine Design
Which one of the following is a positive drive?

V-belt drive
Chain drive
Crossed flat belt drive
Rope drive

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Machine Design
When an open coiled helical compression spring is subjected to an axial compressive load, the maximum shear stress induced in the wire is (where D = Mean diameter of the spring coil, d = Diameter of the spring wire, K = Wahl's stress factor, and W = Axial compressive load on the spring)

(WD/ πd3) × K
(2WD/ πd3) × K
(4WD/ πd3) × K
(8WD/ πd3) × K

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