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Heat Transfer - Engineering

Q1:

Prandtl number is the ratio of

A mass diffusivity to thermal diffusivity.

B momentum diffusivity to thermal diffusivity.

C thermal diffusivity to mass diffusivity.

D thermal diffusivity to momentum diffusivity.

ANS:B - momentum diffusivity to thermal diffusivity.

The Prandtl number (Pr) is the ratio of momentum diffusivity to thermal diffusivity.