Normally, the length to diameter ratio of rotary dryers varies form 4 to 10 and

Question

Normally, the length to diameter ratio of rotary dryers varies form 4 to 10 and for its economic operation, the number of transfer units (NTU) for such dryers varies from

Options:

A . 1.5-2.5

B . 3.5-5.5

C . 7.5-10.0

D . 10-15

Answer: Option A

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