Heat Transfer Thermal conductivities of most of the liquids __________ with rise in temperature. Decreases Increases Remains unchanged May increase or decrease; depends on the liquid Decreases Increases Remains unchanged May increase or decrease; depends on the liquid ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Log mean temperature difference (LMTD) cannot be used, if heat transfer co-efficient over the entire heat exchanger is not constant the heat capacity is not constant and there is a phase change. none of the listed here there exists an unsteady state heat transfer co-efficient over the entire heat exchanger is not constant the heat capacity is not constant and there is a phase change. none of the listed here there exists an unsteady state ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer __________ paint has the minimum absorption co-efficient. Grey White lead Light cream Black Grey White lead Light cream Black ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a shell and tube heat exchanger, square pitch compared to triangular pitch Gives a lower shell side pressure drop None of these Can pack more surface area into a shell of given diameter Gives a higher shell side pressure drop Gives a lower shell side pressure drop None of these Can pack more surface area into a shell of given diameter Gives a higher shell side pressure drop ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat transfer by __________ may not necessarily require the presence of a medium none of the listed here natural convection radiation coduction none of the listed here natural convection radiation coduction ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Asymptotic conditions is reached, when for a fluid flowing in laminar flow through a long tube Exit fluid temperature = wall temperature Graetz number > 100 Exit fluid temperature < wall temperature Exit-fluid temperature > wall temperature Exit fluid temperature = wall temperature Graetz number > 100 Exit fluid temperature < wall temperature Exit-fluid temperature > wall temperature ANSWER DOWNLOAD EXAMIANS APP
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