Heat and Mass Transfer Heat transfer by radiation mainly depends upon Kind and extent of its surface Its temperature All of these Nature of the body Kind and extent of its surface Its temperature All of these Nature of the body ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The transfer of heat by molecular collision is known as Conduction Radiation None of these Convection Conduction Radiation None of these Convection 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 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 0.45 0.75 0.55 0.4 0.45 0.75 0.55 0.4 ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The heat transfer takes place according to Second law of thermodynamics First law of thermodynamics Zeroth law of thermodynamics Kirchhoff's law Second law of thermodynamics First law of thermodynamics Zeroth law of thermodynamics Kirchhoff's law ANSWER DOWNLOAD EXAMIANS APP
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