Machine Design
The ends of the leaves of a semi-elliptical leaf spring are made triangular in order to

Obtain variable moment of inertia (I) in each leaf
Have variable bending moment (M) in each leaf
Permit each leaf to act as an overhanging beam
Make M/I constant throughout the length of the leaf

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
For same pulley diameters, center distance, belt speed and belt and pulley materials,

Open and crossed belt drives transmit same power
Open belt drive transmits more power than crossed belt drive
Crossed belt drive transmits more power than open belt drive
Power transmission does not depend upon open and crossed types of constructions

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
The contact ratio is the ratio of

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

ANSWER DOWNLOAD EXAMIANS APP