Machine Design
A tube has the following advantage over pipe

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

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Machine Design
Which is correct statement? Stress concentration in cyclic loading is

Seriousness would depend on other factors
Very serious in ductile materials and less serious in brittle materials
Very serious in brittle materials and less serious in ductile materials
Equally serious in both types of materials

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