KERALA UNIVERSITY Class 6 heat and mass transfer Question Paper 2019

Practice authentic previous year questions for better exam preparation.

Sample Questions

(a) Derive the expression for critical radius of insulation on a sphere and show that at critical radius of insulation, the heat loss from the sphere will be maximum.
What do you understand by lumped heat capacity model? Under what circumstance a heat transfer model is treated as lumped? State two practical. situations where lumped heat capacity model is applicable.
(a) Consider a black body at 1449 K emitting into air.
(i) Determine the wavelength at which the black body spectral emissive power is maximum. (ii) Calculate the corresponding spectral emissive power and the spectral black body radiation intensity.
Explain, briefly, the difference between pool boiling and flow boiling.