Question

The effective height of stack is given by ___________

(a) Plume height / Actual height of the stack

(b) Plume height * Actual height of the stack

(c) Plume height – Actual height of the stack

(d) Plume height + Actual height of the stack

I have been asked this question by my college director while I was bunking the class.

The query is from Effects of Air Pollution, Design of Stack Height in chapter Air Pollution of Environmental Engineering

Answer 1

Right choice is (d) Plume height + Actual height of the stack

For explanation I would say: Effective height of the stack, H = h1 + h2 where, h1 is the plume height and h2 is the actual height of stack.