Machine Design
The process which improves the machinability of steels, but lowers the hardness and tensile strength is

Normalising
Process annealing
Spheroidising
Full annealing

ANSWER DOWNLOAD EXAMIANS APP

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
The angle between the tangent to the pitch helix and the plane of rotation
None of these

ANSWER DOWNLOAD EXAMIANS APP