The Dittus-Boelter equation for convective heat transfer [(i.e. h = 0. – McqOptions

MCQOPTIONS

1.	The Dittus-Boelter equation for convective heat transfer [(i.e. h = 0.023 (K/D) (Re)0.8 (Pr)0.4] cannot be used for________________?
A.	Low Reynold’s number
B.	Very low Grashoff number
C.	Molten metals
D.	All A., B. and C.
Answer» E.

Discussion

No Comment Found

Related MCQs

While the total emissivity of a perfect black body is unity, the same for a real body is__________________?
With increase in porosity, the thermal conductivity of a solid substance__________________?
With increase in temperature, the thermal conductivity of fresh lubricating oil ___________________?
With increase in temperature, the thermal conductivity of most liquids_________________?
With increase in temperature, the thermal conductivity of a gas ___________________?
With increase in temperature, the thermal conductivity of non-metallic amorphous solids_________________?
With increase in temperature, the total emissivity of conductors____________________?
With increase in temperature, the thermal conductivity of steel___________________?
With increase in the distance between the heat source and the object receiving the heat, the radiation heat transfer ?
With the increase of temperature, the Col-burn jH factor_____________________?