Heat and Mass Transfer Pick up the wrong case. Heat flowing from one side to other depends directly on Thickness Face area Time Temperature difference Thickness Face area Time Temperature difference ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer All radiations in a black body are Refracted Absorbed Reflected Transmitted Refracted Absorbed Reflected Transmitted ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The value of the wave length for maximum emissive power is given by Wine’s law Stefan’s law Kirchhoff’s law Planck’s law Wine’s law Stefan’s law Kirchhoff’s law Planck’s law ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer According to Kirchoff's law, the ratio of emissive power to absorptivity for all bodies is equal to the emissive power of a Black body Red hot body Grey body Brilliant white polished body Black body Red hot body Grey body Brilliant white polished body ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Thermal diffusivity of a substance is given by (where h = Thermal diffusivity, ρ = Density of substance, S = Specific heat, and k = Thermal conductivity) h = S/ρk h = k/ ρS h = ρS/k h = kρ/S h = S/ρk h = k/ ρS h = ρS/k h = kρ/S ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer A composite slab has two layers of different materials with thermal conductivities k₁ and k₂. If each layer has the same thickness, then the equivalent thermal conductivity of the slab will be k₁ k₂ (k₁ + k₂) 2 k₁ k₂/ (k₁ + k₂) (k₁ + k₂)/ k₁ k₂ k₁ k₂ (k₁ + k₂) 2 k₁ k₂/ (k₁ + k₂) (k₁ + k₂)/ k₁ k₂ ANSWER DOWNLOAD EXAMIANS APP
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