Heat Transfer The units of resistance to heat transfer is J.m⁻².K⁻¹ J.m⁻¹.K⁻¹ W.m⁻².K⁻¹ W⁻¹m²K J.m⁻².K⁻¹ J.m⁻¹.K⁻¹ W.m⁻².K⁻¹ W⁻¹m²K ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The ratio of the total emissive power to the absorptivity for all bodies is same at ther-mal equilibrium. This is __________ law. Kirchoffs Stefan-Boltzman Wien's displacement Planck's Kirchoffs Stefan-Boltzman Wien's displacement Planck's ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The left face of a one dimensional slab of thickness 0.2 m is maintained at 80°C and the right face is exposed to air at 30°C. The thermal conductivity of the slab is 1.2 W/m.K and the heat transfer co-efficient from the right face is 10 W/m².K. At steady state, the temperature of the right face in °C is 77.2 71.2 63.8 48.7 77.2 71.2 63.8 48.7 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The main purpose of providing fins on heat transfer surface is to increase the Heat transfer area Temperature gradient Heat transfer co-efficient Mechanical strength of the equipment Heat transfer area Temperature gradient Heat transfer co-efficient Mechanical strength of the equipment ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer All analogy equations connecting friction factor and heat transfer co-efficient apply only to Wall or skin friction Both A and B Turbulent flow Form friction Wall or skin friction Both A and B Turbulent flow Form friction ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Dietus-Boelter equation cannot be used for molten metals mainly due to its very low thermal conductivity Grashoff number viscosity Prandtl number thermal conductivity Grashoff number viscosity Prandtl number ANSWER DOWNLOAD EXAMIANS APP
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