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

Equally serious in both types of materials
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

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Machine Design
When a belt drive is transmitting maximum power,

Driving tension on tight side is twice the centrifugal tension
Effective tension is half of centrifugal tension
Effective tension is equal to centrifugal tension
Driving tension on slack side is equal to centrifugal tension

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