Turn down ratio of a burner________?
AIs normally much more for a continuous furnace as compared to a batch furnace
BIs the ratio of maximum to minimum permissible heat input rates
CShould be as low as possible i.e., 1 : 2
DShould be 1:1 for a batch type furnace
Correct answer
B. Is the ratio of maximum to minimum permissible heat input rates
Explanation
The correct answer is Is the ratio of maximum to minimum permissible heat input rates.