Heat Transfer Log mean temperature difference (LMTD) cannot be used, if there exists an unsteady state the heat capacity is not constant and there is a phase change. heat transfer co-efficient over the entire heat exchanger is not constant none of the listed here there exists an unsteady state the heat capacity is not constant and there is a phase change. heat transfer co-efficient over the entire heat exchanger is not constant none of the listed here ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following has maximum thermal conductivity? Nitrogen Tar Coal Iron Nitrogen Tar Coal Iron ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The average heat transfer co-efficient over the entire length of the plate (ha) and the local heat transfer co-efficient (hL), in case of heat transfer over a flat plate in lminar zone is related as Ha= 5hL Ha = 2hL Ha = 0.8hL Ha = hL Ha= 5hL Ha = 2hL Ha = 0.8hL Ha = hL ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The film thickness for laminar film condensation on vertical surface __________ from top to bottom. Cummulatively increases And the surface conductance increase Cummulatively decreases Remains constant Cummulatively increases And the surface conductance increase Cummulatively decreases Remains constant ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A hot body will radiate heat most rapidly, if its surface is Black & rough White & rough Black & polished White & polished Black & rough White & rough Black & polished White & polished ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following is not used as a medium for high temperature heating ? dowtherm None of the listed here mercury liquid metal dowtherm None of the listed here mercury liquid metal ANSWER DOWNLOAD EXAMIANS APP
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