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

Equally serious in both types of materials
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

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Machine Design
Tapered roller bearings can take

Radial load only
Both radial and axial loads and the ratio of these being less than unity
Both radial and axial loads and the ratio of these being greater than unity
Axial load only

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