The thermal radiative flux from a surface of emissivity = 0.4 is 22.68 kW/m2. The approximate surface temperature (K) is (Stefan-Boltzmann constant = 5.67 × 10-8 W/m2.K4)?

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________?

Tempering of a material does not improve its________?

Commercial production of Vanaspati is done by ________ of edible vegetable oils?

Stability of a control system containing a transportation lag can be best analysed by________?

Which of the following is a controlling factor in very fast heterogeneous reaction?