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Machine Design

Machine Design
Taper usually provided on cotter is

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

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Machine Design
According to I.B.R., the distance between the rows of rivets, for equal number of rivets in more than one row for lap joint or butt joint (chain riveting) shall not be less than

2 d
1.5 d
2.5 d
d

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Machine Design
A connecting rod is designed as a

Long column
Short column
All of these
Strut

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Machine Design
The shear stress in a beam varies from zero at the outer fibers to a maximum at the________.

Lower surface
None of these
Upper surface
Neutral surface

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Machine Design
If a shaft made from ductile material is subjected to combined bending and twisting moment, calculations based on which one of the following failure theories will give the most conservative value?

Maximum strain energy theory
Maximum distortion energy theory
Maximum principal stress theory
Maximum shear stress theory

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Machine Design
Which of the following spring is used in mechanical wrist watch?

Spiral spring
Torsion spring
Belleville spring
Helical compression spring

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