Heat Transfer Log mean temperature difference (LMTD) cannot be used, if heat transfer co-efficient over the entire heat exchanger is not constant none of the listed here the heat capacity is not constant and there is a phase change. there exists an unsteady state heat transfer co-efficient over the entire heat exchanger is not constant none of the listed here the heat capacity is not constant and there is a phase change. there exists an unsteady state ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which type of heat exchanger is preferred for heavy heat loads ? Series and parallel set of shell and tube None of the listed here Double pipe Plate fine Series and parallel set of shell and tube None of the listed here Double pipe Plate fine ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For __________ Prandtl number values, the heat conduction will be negligible in the buffer zone. No Extremely low Low High No Extremely low Low High ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Vacuum is generally maintained in the vapour space of an evaporator mainly to Concentrate heat sensitive materials Get economical temperature difference by using moderate pressure steam Facilitate forward feeding in multiple effect evaporation Achieve very high concentration of the final product Concentrate heat sensitive materials Get economical temperature difference by using moderate pressure steam Facilitate forward feeding in multiple effect evaporation Achieve very high concentration of the final product ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Calburn analogy is applicable for the value of Prandtl number from 0.5 to 5 0.6 to 120 0.001 to 1 120 to 400 0.5 to 5 0.6 to 120 0.001 to 1 120 to 400 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which one gives the monochromatic emissive power for black body radiation ? Planck's law Wien's law Stefan-Boltzman law Kirchhoffs law Planck's law Wien's law Stefan-Boltzman law Kirchhoffs law ANSWER DOWNLOAD EXAMIANS APP
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