Automobile Engineering in ME
The purpose of a balancer shaft is to

Increase inertia force of the rotating crankshaft
Adjusts the timing of the intake and exhaust valve openings
Reduce vibrations caused by the crankshaft rotation
Balance the timing in the movement of the two groups of pistons

ANSWER DOWNLOAD EXAMIANS APP

Automobile Engineering in ME
The ball joints are used on the tie rod ends, because they

Can deal with movement of the suspension both vertically and in other directions
Reduce the amount of sliding resistance
Reduce the amount of noise generated
Improve the force transmission speed

ANSWER DOWNLOAD EXAMIANS APP