Machine Design
When the belt speed increases

Power transmitted remains the same
Power transmitted decreases
Power transmitted increases
Power transmitted increases to a maximum value and then decreases

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Machine Design
In worm, gears, pitch lead angle is

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

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