Heat and Mass Transfer Metals are good conductors of heat because They contain free electrons Their atoms collide frequently Their atoms are relatively far apart They have high density They contain free electrons Their atoms collide frequently Their atoms are relatively far apart They have high density ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Fouling factor is used When a liquid exchanges heat with a gas None of these In case of Newtonian fluids In heat exchanger design as a safety factor When a liquid exchanges heat with a gas None of these In case of Newtonian fluids In heat exchanger design as a safety factor ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer If the energy radiated per second per sq. cm. of the surface for wave lengths lying between λ, and λ + dλ is represented by (eλ.dλ), then eλ is called None of these Absorptive power Emissivity Emissive power None of these Absorptive power Emissivity Emissive power ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Thermal conductivity of glass wool varies from sample to sample because of variation in Composition Density All of these Porosity Composition Density All of these Porosity ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Unit of thermal conductivity in M.K.S. units is K cal/hr m² °C K cal/kg m² °C K cal m/hr m² °C K calm/hr °C K cal/hr m² °C K cal/kg m² °C K cal m/hr m² °C K calm/hr °C ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Which of the following is the case of heat transfer by radiation? Heat received by a person from fireplace Cooling of parts in furnace Blast furnace Heating of building Heat received by a person from fireplace Cooling of parts in furnace Blast furnace Heating of building ANSWER DOWNLOAD EXAMIANS APP
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