Machine Design
The property of a material which enables it to be drawn into wires with the application of a tensile force, is called

Malleability
Ductility
Elasticity
Plasticity

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

Move towards right of the bearing making metal to metal contact
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

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

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