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Machine Design

Machine Design
The ratio of circumferential stress to longitudinal stress in a thin cylinder subjected to an internal pressure is

43832
2
4
1

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Machine Design
Fabric belts are used in industrial applications because

They are cheap
None of these
They are unaffected by moisture and humidity
They can work at high temperature

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Machine Design
The fatigue life of a part can be improved by

Polishing
Shot peening
Electroplating
Coating

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Machine Design
According to Indian standard specifications, plain carbon steel designated by 40C8 contains carbon

0.40 to 0.60%
0.20 to 0.40%
0.35 to 0.45%
None of these

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Machine Design
When a bolt is subjected to an external load, the stress induced in the bolt will be

Shear stress
Tensile stress
Combined tensile and shear stress
Any one of these

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Machine Design
The load cup of a screw jack is made separate from the head of the spindle to

Enhance the load carrying capacity of the jack
Prevent the rotation of load being lifted
Reduce the effort needed for lifting the working load
Reduce the value of frictional torque

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