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Machine Design

Machine Design
The standard length of the shaft is

5 m
7 m
All of these
6 m

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Machine Design
When the connected members are very yielding (soft gasket) as compared to the bolt, then the resultant load on the bolt will be equal to the

Sum of the initial tension and external load applied
Initial tension or external load, whichever is greater
Initial tension
External load applied

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Machine Design
A tube has the following advantage over pipe

Greater shock absorption
Smoother inside walls
All of these
Lighter and easier to handle

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Machine Design
The ball bearings are, usually, made from

High speed steel
Low carbon steel
Medium carbon steel
High carbon steel

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Machine Design
Three different weights fall from a certain height under vacuum. They will take

Times proportional to weight to reach earth
Same time to reach earth
Times inversely proportional to weight to reach earth
None of these

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Machine Design
For hardening alloy steels and high speed steels, they are heated to

500 to 600°C
1300 to 1500°C
700 to 900°C
1100 to 1300°C

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