KERALA UNIVERSITY Class 6 heat and mass transfer Question Paper 2013

Practice authentic previous year questions for better exam preparation.

Sample Questions

What is the physical significance of Reynold's number?
(a) The water is heated in a tank by dipping a plate ( $30 \mathrm{~cm} \times 30 \mathrm{~cm}$ ) size. The temperature of plate surface is maintained at $140^{\circ} \mathrm{C}$. Assuming the temperature of surrounding water at $20^{\circ} \mathrm{C...
(b) In a Straight tube of 60 mm diameter water is flowing at a velocity of $12 \mathrm{~m} / \mathrm{s}$. the tube surface temperature is maintained at $70^{\circ} \mathrm{C}$ and the flowing water is heated from the inlet temperature $15^{\circ} \ma...
(a) In a certain double pipe heat exchanger hot water flows at a rate of $50000 \mathrm{~kg} / \mathrm{h}$ and gets cooled from $95^{\circ} \mathrm{C}$ to $65^{\circ} \mathrm{C}$. at the same time $50000 \mathrm{~kg} / \mathrm{h}$ of cooling water at...
(b) Derive an expression for LMTD in Parallel flow heat exchanger. OR