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Machine Design

Machine Design
When a load W is applied suddenly on a bar of cross-sectional area A, the stress induced in the bar will be

2W/A
3W/A
W/A
W/2A

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Machine Design
A steel containing 0.8% carbon is known as

Eutectoid steel
None of these
Hypo-eutectoid steel
Hypereutectoid steel

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Machine Design
The constant factor in case of R10 series of preferred numbers is

1.12
1.58
1.26
1.06

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Machine Design
A rivet is specified by

Length of tail
Length of rivet
Type of head
Shank diameter

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Machine Design
According to Indian standards, total numbers of tolerance grades are

8
18
12
20

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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

None of these
Goodman relation
Soderberg relation
Gerber relation

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