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 calm/hr °C K cal m/hr m² °C K cal/hr m² °C K cal/kg m² °C K calm/hr °C K cal m/hr m² °C ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Which of the following has least value of conductivity? Plastic Glass Water Air Plastic Glass Water Air ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The highest thermal diffusivity is of Wood Concrete Lead Iron Wood Concrete Lead Iron 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 Emissivity Absorptive power Absorptivity Emissive power Emissivity Absorptive power Absorptivity Emissive power ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer According to Kirchoff's law, the ratio of emissive power to absorptivity for all bodies is equal to the emissive power of a Brilliant white polished body Grey body Red hot body Black body Brilliant white polished body Grey body Red hot body Black body ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Total emissivity of polished silver compared to black body is More or less same Very much lower Higher Same More or less same Very much lower Higher Same ANSWER DOWNLOAD EXAMIANS APP
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