Machine Design
The design of pin of a rocker arm of an I.C. engine is based on

Bearing failure
Shearing failure
Bending failure
All of these

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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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Machine Design
Spring index is

Its capability of storing energy
Load required to produce unit deflection
Indication of quality of spring
Ratio of coil diameter to wire diameter

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