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Mechanical Engineering · Q65

Heat And Mass Transfer

Engineering and GATE · Mechanical Engineering · question 65

Q65

In free convection heat transfer, Nusselt number is function of

A.
Grashoff number and Reynold number
B.
Grashoff number and Prandtl number
Answer
C.
Prandtl number and Reynold number
D.
Grashoff number, Prandtl number and Reynold number

Answer: Option B

Solution

Answer: Option B
Solution:
In free convection heat transfer, Nusselt number is function of Grashoff number and Prandtl number the Nusselt number (Nu) is the ratio of convective to conductive heat transfer at a boundary in a fluid.