The rate of energy transferred by convection to that by conduction is called

A. Stanton number

B. Nusselt number

C. Biot number

D. Peclet number

Answer: Option B

Solution(By Examveda Team)

Nusselt number is the ratio of convection heat transfer to conduction heat transfer. Nu >> 1 , More effective Convection Nu = 1, For fluid layer represent heat transfer by pure conduction across layer