Automobile Engineering in ME
The difference between DOT 3 and DOT 4 brake fluids is

DOT 3 and DOT 4 fluids have the same boiling point, but DOT 4 fluid has a longer service life
DOT 4 fluids have a higher boiling point than DOT 3 fluid
DOT 4 fluids have a lower boiling point than DOT 3 fluid
DOT 4 fluid is more resistant to freezing than DOT 3 fluid

ANSWER DOWNLOAD EXAMIANS APP

Automobile Engineering in ME
In radial tyres

All plies run parallel to one another and vertical to tyre bead
One ply layer runs diagonally one way and another layer runs diagonally the other way
None of these
Inner tubes are always used

ANSWER DOWNLOAD EXAMIANS APP