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

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
Stress concentration is caused due to

Pitting at points or areas at which loads on a member are applied
Abrupt change of section
Variation in properties of material from point to point in a member
All of these

ANSWER DOWNLOAD EXAMIANS APP