Machine Design
When the shaft rotates in anticlockwise direction at high speed in a bearing, it will

Have contact at the bottom most of the bearing
Move towards left of the bearing making metal to metal contact
Move towards right of the bearing making no metal to metal contact
Move towards right of the bearing making metal to metal contact

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

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

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Machine Design
Form coefficient of spring is

Its capability of storing energy
Concerned with strength of wire of spring
Load required to produce unit deflection
Ratio of coil diameter to wire diameter

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