Heat and Mass Transfer 40% of incident radiant energy on the surface of a thermally transparent body is reflected back. If the transmissivity of the body be 0.15, then the emissivity of surface is 0.75 0.45 0.55 0.4 0.75 0.45 0.55 0.4 ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Thermal conductivity of air at room temperature in kcal/m hr °C is of the order of 0.01 0.002 0.1 0.02 0.01 0.002 0.1 0.02 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 unit of overall coefficient of heat transfer is kcal/m² kcal/m² hr °C kcal/m hr °C kcal/hr °C kcal/m² kcal/m² hr °C kcal/m hr °C kcal/hr °C ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The ratio of the energy absorbed by the body to total energy falling on it is called Emissive power Absorptive power Absorptivity Emissivity Emissive power Absorptive power Absorptivity Emissivity ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The natural convection air cooled condensers are used in All of these Domestic refrigerators Room air conditioners Water coolers All of these Domestic refrigerators Room air conditioners Water coolers ANSWER DOWNLOAD EXAMIANS APP
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