Machine Design
Spring stiffness is

Its capability of storing energy
Its ability to absorb shocks
Ratio of coil diameter to wire diameter
Load required to produce unit deflection

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

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

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