Machine Design
Auto frettage is the method of

Pre-stressing thick cylinders
Calculating stresses in thick cylinders
Increasing the life of thick cylinders
Joining thick cylinders

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Machine Design
Cold working

Increases the fatigue strength
Decreases the fatigue strength
Alone has no influence on fatigue strength
Has no influence on fatigue strength

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

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

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