Answered Aug 30, 2018
Where do you get 3 from?
there are two types, Natural and mechanical
of the mechanical drafts there are 3 types, 1)forced 2) Induced and 3) balanced
so if you break the answer down you either have 2 types natural and mechanical
or 4 types.
natural, and the 3 types of mechanical, induced, forced and balanced.
is your question supposed to read " how many forms of MECHANICAL draft are there?"
Answered Feb 02, 2018
Forgot your password?