Automobile Engineering in ME
A three way catalytic converter

Removes CO, HC, and NO₂ from the exhaust gases passing through it
Burns fuel vapour gases
Reduces N₂, H₂O, and CO₂ emission levels
Re-circulates exhaust gases

ANSWER DOWNLOAD EXAMIANS APP

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

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

ANSWER DOWNLOAD EXAMIANS APP

Automobile Engineering in ME
In a ventilated disc brake

A duct directs air towards the caliper for cooling while the vehicle is moving
Disc contains radial vanes between its rubbing surfaces for optimum cooling performance
Disc contains many small holes for optimum cooling performance
Caliper is covered with cooling fins

ANSWER DOWNLOAD EXAMIANS APP