Heat Transfer Thermal conductivities of most of the liquids __________ with rise in temperature. Decreases Remains unchanged Increases May increase or decrease; depends on the liquid Decreases Remains unchanged Increases May increase or decrease; depends on the liquid ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A long iron rod initially at a temperature of 20°C has one end dipped in boiling water (100°C) at time, t = 0. The curved surface of the rod is insulated so that heat conduction is one dimensional in the axial direction. The temperature at a distance 100 mm from the dipped end becomes 40°C at time, t = 200 s. The same temperature is achieved at a distance of 200 mm from the dipped end at time t = 800 s t = 356 s t = 400 s t = 283 s t = 800 s t = 356 s t = 400 s t = 283 s ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Black liquor generated during paper manufacture is concentrated in a multiple effect evaporators followed by a crystalliser single effect evaporator followed by a crystalliser single effect evaporator multiple effect evaporator multiple effect evaporators followed by a crystalliser single effect evaporator followed by a crystalliser single effect evaporator multiple effect evaporator ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer What is the emissivity of a black body? 1 0.9 0.5 1 0.9 0.5 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Tubes are held between top and bottom tube sheets in Calenderia type evaporator by keeping The top tube sheet floating and bottom tube sheet fixed Both the tube sheets floating The top tube sheet fixed and the bottom tube-sheet floating Both the tube sheets fixed The top tube sheet floating and bottom tube sheet fixed Both the tube sheets floating The top tube sheet fixed and the bottom tube-sheet floating Both the tube sheets fixed ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The radiation heat flux from a heating element at a temperature of 800°C, in a furnace maintained at 300°C is 8 kW/m². The flux, when the element temperature is increased to 1000°C for the same furnace temperature is 11.2 kW/m² 12.0 kW/m² 16.5 kW/m² 14.6 kW/m² 11.2 kW/m² 12.0 kW/m² 16.5 kW/m² 14.6 kW/m² ANSWER DOWNLOAD EXAMIANS APP
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