8127Chemical EngineeringMedium
Normally, the length to diameter ratio of rotary dryers varies from 4 to 10 and for its economic operation; the number of transfer units (NTU) for such dryers varies from?
A1.5-2.5
B3.5-5.5
C10-15
D7.5-10.0
Correct answer
A. 1.5-2.5
Explanation
The correct answer is 1.5-2.5.