Heat and Mass Transfer Thermal conductivity of glass wool varies from sample to sample because of variation in Density Porosity All of these Composition Density Porosity All of these Composition ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The value of Prandtl number for air is about 0.3 1.7 0.1 0.7 0.3 1.7 0.1 0.7 ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The automobile radiator is a heat exchanger of Parallel flow type Counter flow type Regenerator type Cross flow type Parallel flow type Counter flow type Regenerator type Cross flow type ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The most commonly used method for the design of duct size is the Velocity reduction method Dual or double method Static regains method Equal friction method Velocity reduction method Dual or double method Static regains method Equal friction method 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 = kρ/S h = k/ ρS h = S/ρk h = ρS/k h = kρ/S h = k/ ρS h = S/ρk h = ρS/k ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Thermal diffusivity is a Dimensionless parameter All of these Function of temperature Physical property of a substance Dimensionless parameter All of these Function of temperature Physical property of a substance ANSWER DOWNLOAD EXAMIANS APP
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