Heat and Mass Transfer The ratio of the energy absorbed by the body to total energy falling on it is called Absorptive power Absorptivity Emissivity Emissive power Absorptive power Absorptivity Emissivity Emissive power ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer An electric cable of aluminium conductor (k = 240 W/mK) is to be insulated with rubber (k = 0.15 W/mK). The cable is to be located in air (h = 6 W/m²). The critical thickness of insulation will be 40 mm 800 mm 160 mm 25 mm 40 mm 800 mm 160 mm 25 mm ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Depending on the radiating properties, a body will be white when (Where a = absorptivity, p = reflectivity, x = transmissivity) P = 0, x = 1 and a = 0 P = 0, x = 0 and a = 1 P=1, T = 0 and a = 0 X = 0, a + p = 1 P = 0, x = 1 and a = 0 P = 0, x = 0 and a = 1 P=1, T = 0 and a = 0 X = 0, a + p = 1 ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer According to Stefan Boltzmann law, the total radiation from a black body per second per unit area is directly proportional to the Cube of the absolute temperature Absolute temperature Fourth power of the absolute temperature Square of the absolute temperature Cube of the absolute temperature Absolute temperature Fourth power of the absolute temperature Square of the absolute temperature ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer According to Wien's law, the wavelength corresponding to maximum energy is proportion to Absolute temperature (T) I² F T Absolute temperature (T) I² F T ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer In heat exchangers, degree of approach is defined as the difference between temperatures of Hot medium inlet and outlet Hot medium outlet and cold water outlet Hot medium outlet and cold water inlet Cold water inlet and outlet Hot medium inlet and outlet Hot medium outlet and cold water outlet Hot medium outlet and cold water inlet Cold water inlet and outlet ANSWER DOWNLOAD EXAMIANS APP
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