Machine Design
The contact ratio is the ratio of

Length of arc of recess to the circular pitch
Length of path of contact to the circular pitch
Length of arc of approach to the circular pitch
Length of arc of contact to the circular pitch

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
A compound belt drive is used when

Shafts are arranged at right angles and rotate in one definite direction
Shafts are arranged parallel and rotate in the same directions
None of these
Shafts are arranged parallel and rotate in the opposite directions

ANSWER DOWNLOAD EXAMIANS APP