Heat and Mass Transfer The total emissivity power is .defined as the total amount of radiation emitted by a black body per unit Area Thickness Temperature Time Area Thickness Temperature Time ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer When α is absorptivity, ρ is reflectivity and τ is transmissivity, then for a diathermanous body, α = 1, ρ = 0 and τ = 0 α + ρ = 1 and τ = 0 α = 0, ρ = 1 and τ = 0 α = 0, ρ = 0 and τ = 1 α = 1, ρ = 0 and τ = 0 α + ρ = 1 and τ = 0 α = 0, ρ = 1 and τ = 0 α = 0, ρ = 0 and τ = 1 ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The unit of Stefan Boltzmann constant is watt/cm2 °K⁴ watt/cm4 °K watt2/cm °K⁴ watt/cm3 °K watt/cm2 °K⁴ watt/cm4 °K watt2/cm °K⁴ watt/cm3 °K ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The amount of radiation mainly depends on Type of surface of body Temperature of body Nature of body All of these Type of surface of body Temperature of body Nature of body All of these ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Depending on the radiating properties, body will be transparent when (Where a = absorptivity, p = reflectivity, x = transmissivity) P = 0, x= 1, and a = 0 P=1, x = 0, and a = 0 X = 0, a + p = 1 P = 0, x = 0 and a = 1 P = 0, x= 1, and a = 0 P=1, x = 0, and a = 0 X = 0, a + p = 1 P = 0, x = 0 and a = 1 ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Sensible heat factor is given by (where S.H. = Sensible heat, and L.H. = Latent heat) S.H/(L.H - S.H) S.H/(S.H + L.H) (L.H - S.H)/S.H (S.H + L.H) /S.H S.H/(L.H - S.H) S.H/(S.H + L.H) (L.H - S.H)/S.H (S.H + L.H) /S.H ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS