Heat Transfer The critical radius 'r' of insulation on a pipe is given by r = h/k r = k/2h r = k/h r = 2k/h r = h/k r = k/2h r = k/h r = 2k/h 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 = 283 s t = 400 s t = 356 s t = 800 s t = 283 s t = 400 s t = 356 s ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The units of resistance to heat transfer is W⁻¹m²K J.m⁻¹.K⁻¹ W.m⁻².K⁻¹ J.m⁻².K⁻¹ W⁻¹m²K J.m⁻¹.K⁻¹ W.m⁻².K⁻¹ J.m⁻².K⁻¹ ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Conduction occurs in the buffer zone for a fluid flowing through a heated pipe, only when Prandtl number is L >1 < 1 0.1 L >1 < 1 0.1 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Mode of heat transfer in which the fluid moves under the influence of changes in fluid pressure produced by external work is called Natural convection Radiation Forced convection Conduction Natural convection Radiation Forced convection Conduction ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Thermal conductivity of a conducting solid material depends upon its None of the listed here both temperature & porosity temperature porosity None of the listed here both temperature & porosity temperature porosity ANSWER DOWNLOAD EXAMIANS APP
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