Heat and Mass Transfer The insulation ability of an insulator with the presence of moisture would 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 Decrease ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The product of Reynolds number and Prandtl number is known as Grashoff number Peclet number Stanton number Biot number Grashoff number Peclet number Stanton number Biot number ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The value of Prandtl number for air is about 0.1 0.7 1.7 0.3 0.1 0.7 1.7 0.3 ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The amount of radiation mainly depends upon the Type of surface of the body Temperature of the body Nature of the body All of these Type of surface of the body Temperature of the body Nature of the body All of these ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The expression Q = ρ AT4 is called Stefan-Boltzmann equation Fourier equation Newton Reichmann equation Joseph-Stefan equation Stefan-Boltzmann equation Fourier equation Newton Reichmann equation Joseph-Stefan equation 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 Grey body Black body White body Opaque body Grey body Black body White body Opaque body ANSWER DOWNLOAD EXAMIANS APP
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