Machine Design
The value of Lewis form factor used in design of gears is

Dependent on system of teeth
All of these
Dependent on number of teeth of a gear
Independent of size of teeth

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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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