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Machine Design

Machine Design
The number of slots in a 25 mm castle nut is

6
4
2
8

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Machine Design
The design calculations for members subject to fluctuating loads with the same factor of safety, yield the most conservative estimates when using

Soderberg relation
Goodman relation
Gerber relation
None of these

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Machine Design
If d is the normal diameter of a bolt in mm, then the initial tension in kg in a bolt used for making a fluid tight joint as for steam engine cover joint is calculated by the relation

151 d
138 d
168 d
124 d

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Machine Design
In radial cams, the follower moves

In any direction irrespective of cam axis
Along the cam axis
In a direction perpendicular to the cam axis
In a direction parallel to the cam axis

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Machine Design
In Vickers hardness testing, the pyramid indentor apex is

122°
40°
152°
136°

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Machine Design
Lewis equation in gears is used to find the

Compressive stress in bending
Tensile stress in bending
Fatigue stress
Shear stress

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