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

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

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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
Equally serious in both types of materials
Very serious in brittle materials and less serious in ductile materials

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Machine Design
In worm, gears, pitch lead angle is

The angle between the tangent to the pitch helix and an element of the cylinder
Half the angle between two inclined faces in axial plane
None of these
The angle between the tangent to the pitch helix and the plane of rotation

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