Heat Transfer The outlet temperature of cooling water in a heat exchanger is generally not allowed to exceed above 50°C in industrial practice mainly to avoid Its evaporation loss Excessive corrosion Decrease in heat exchanger efficiency Uneconomic LMTD Its evaporation loss Excessive corrosion Decrease in heat exchanger efficiency Uneconomic LMTD ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In pipe flow, heat is transferred from hot wall to the liquid by Free and forced convection Forced convection only Forced convection and conduction Conduction only Free and forced convection Forced convection only Forced convection and conduction Conduction only ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following has the minimum absorptivity? Refractory bricks Aluminium foil Iron plates Coal dust Refractory bricks Aluminium foil Iron plates Coal dust ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The local surface conductance for laminar film condensation on vertical surface is (where, t = film thickness) Independent of 't' ∝ √t ∝ t ∝ 1/t Independent of 't' ∝ √t ∝ t ∝ 1/t ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Kirchoff s law applies to __________ radiation total monochromatic None of the listed here Both total & monochromatic total monochromatic None of the listed here Both total & monochromatic ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Boiling point elevation of a solution of NaOH Is almost independent of pressure Both B and C Increases rapidly with temperature rise Is almost independent of temperature Is almost independent of pressure Both B and C Increases rapidly with temperature rise Is almost independent of temperature ANSWER DOWNLOAD EXAMIANS APP
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