Heat and Mass Transfer Unit of thermal conductivity in S.I. units is W/m °K Option (B) and (C) above J/m² sec J/m °K sec W/m °K Option (B) and (C) above J/m² sec J/m °K sec ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer When absorptivity (α) = 1, reflectivity (ρ) = 0 and transmissivity (τ) = 0, then the body is said to be a Black body Opaque body White body Grey body Black body Opaque body White body Grey body ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Cork is a good insulator because it has Free electrons Low density Atoms colliding frequency Porous body Free electrons Low density Atoms colliding frequency Porous body ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer A heat exchanger with heat transfer surface area A and overall heat transfer coefficient U handles two fluids of heat capacities Cmax and Cmin. The number of transfer units (NTU) used in the analysis of heat exchanger is specified as U.Cmin Cmin/U U/A.Cmin U/Cmin U.Cmin Cmin/U U/A.Cmin U/Cmin ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The insulation ability of an insulator with the presence of moisture would Decrease May increase/decrease depending on temperature and thickness of insulation Remain unaffected Increase Decrease May increase/decrease depending on temperature and thickness of insulation Remain unaffected Increase ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Depending on the radiating properties, a body will be opaque when P = 0, x = 1 and a = 0 X = 0, a + p = 1 P = 0, x = 0 and a = 1 P=1, x = 0 and a = 0 P = 0, x = 1 and a = 0 X = 0, a + p = 1 P = 0, x = 0 and a = 1 P=1, x = 0 and a = 0 ANSWER DOWNLOAD EXAMIANS APP
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