Q. The units of resistance to heat transfer is

View solution

Q. Thermal conductivity of a gas at low density, __________ with increase in temperature.

View solution

Q. Nusselt number is a function of Prandtl number and __________ number of fluid in natural convection heat transfer.

View solution

Q. __________ heat exchanger is used for chilling oil to be dewaxed.

View solution

Q. It is not recommended to use a 1-2 shell and tube heat exchanger for a particular heat duty, whenever the LMTD correction factor is

View solution

Q. Pick out the wrong statement.

View solution

Q. In sub-cooled boiling,

View solution

Q. With increase in temperature, the thermal conductivity of a gas

View solution

Q. Which of the following parameters of the fluid is not very important, while deciding its route in a shell and tube heat exchanger?

View solution

Q. Corrosiveness of steam condensate is due to the presence of

View solution

Q. The driving potential for the crystal growth during crystallisation is the __________ of the solution.

View solution

Q. jH factor for heat transfer depends upon the __________ number.

View solution

Q. Critical value of the __________ number governs the transition from laminar to turbulent flow in free convection heat transfer.

View solution

Q. The thermal boundary layer at NPr > 1

View solution

Q. In the free convection regime of pool boiling, the heat flux is proportional to

View solution

Q. With increase in temperature, the thermal conductivity of fresh lubricating oil

View solution

Q. Fresh orange juice contains 12% (by weight) solids and the rest water 90% of the fresh juice is sent to an evaporator to remove water and subsequently mixed with the remaining 10% of fresh juice. The resultant product contains 40% solids. The kg of water removed from 1 kg fresh juice is

View solution

Q. Kg of liquid evaporated per hour in an evaporator is defined as its

View solution

Q. Pick out the correct statement.

View solution

Q. Open pan evaporators are preferred to be used, when the solution to be concentrated is

View solution