Heat Transfer For an ideal black body Transmissivity = 1 Reflectivity = 1 Absorptivity = 1 Emissivity = 0 Transmissivity = 1 Reflectivity = 1 Absorptivity = 1 Emissivity = 0 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer At constant temperature, the thermal conductivities of gases __________ with rise in pressure. Increase Remain unchanged Decrease May increase or decrease; depends on the pressure Increase Remain unchanged Decrease May increase or decrease; depends on the pressure ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Fresh orange juice contains 12% (by weight) solids and the rest water 90% of the fresh juice is sent to an evaporator to remove water and subsequently mixed with the remaining 10% of fresh juice. The resultant product contains 40% solids. The kg of water removed from 1 kg fresh juice is 0.7 0.4 0.6 0.5 0.7 0.4 0.6 0.5 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The units of resistance to heat transfer is 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 W⁻¹m²K J.m⁻¹.K⁻¹ ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer If the baffle spacing in a shell and tube heat exchanger increases, then the Reynolds number of the shell side fluid Increases or decreases depending on number of shell passes Remains unchanged Decreases Increases Increases or decreases depending on number of shell passes Remains unchanged Decreases Increases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Prandtl number is the reciprocal of Thermal diffusivity/Momentum diffusivity Mass diffusivity x Momentum diffusivity Thermal diffusivity x Mass diffusivity Thermal diffusivity x Momentum Thermal diffusivity/Momentum diffusivity Mass diffusivity x Momentum diffusivity Thermal diffusivity x Mass diffusivity Thermal diffusivity x Momentum ANSWER DOWNLOAD EXAMIANS APP
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