The major reason of hydrodynamic noise (i.e., noise resulting from liquid flow) is_________________?
2
Noise produced by cooling fans (employed in air cooled heat exchangers or cooling tower) is mainly caused due to the turbulence created by blade passage through air. It can be reduced by use of a slower fan_________________?
3
Main pollutants released from iron & steel industry is__________________?
These are just sample questions. The actual quiz contains 15 questions.
