A.Reynolds number

B.Reynolds number and Prandtl number

**C.Grashof’s number and Prandtl number**

D.Weber number and Mach number

E.None of the above

### Related Mcqs:

- Non-dimensional number generally involved in case of heat transfer from horizontal cylinder by natural convection is
- Non-dimensional numbers generally involved in case of heat transfer from horizontal cylinders by natural convection are
- A dimensionless number representing the ratio of inertia forces to viscous forces is known as
- A dimensionless group which represents the rate of the (product of intertial forces times buoyant forces) to viscous force squared is known as
- A non-dimensional number generally associated with natural convection heat transfer is
- In case the hydrodynamic and thermal boundary layers are identical for a fluid flowing over a heated plate
- A dimensionless number which is the ratio of kinematic viscosity to thermal diffusivity is known as
- A non-dimensional number which generally finds application in mass transfer problems is
- A dimensionless number which is the ratio of mass heat flow rate to the heat flow rate by conduction under a unit temperature gradient and through a thickness L is known as
- Which dimensionless number indicates the relative strength of the buoyant to viscous forces?