Heat and Mass Transfer Absorptivity of a body will be equal to its emissivity At one particular temperature At all temperatures When system is under thermal equilibrium At critical temperature At one particular temperature At all temperatures When system is under thermal equilibrium At critical temperature ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The process of heat transfer from one particle of the body to another is called conduction, when the particles of the body Affect the intervening medium Do not move actually Move actually Does not affect the intervening medium Affect the intervening medium Do not move actually Move actually Does not affect the intervening medium ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Two balls of same material and finish have their diameters in the ratio of 2: 1 and both are heated to same temperature and allowed to cool by radiation. Rate of cooling by big ball as compared to smaller one will be in the ratio of 0.042361111111111 0.084027777777778 0.043055555555556 0.16736111111111 0.042361111111111 0.084027777777778 0.043055555555556 0.16736111111111 ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Fourier's law of heat conduction gives the heat flow for Two dimensional cases only One dimensional cases only Irregular surfaces Nonuniform temperature surfaces Two dimensional cases only One dimensional cases only Irregular surfaces Nonuniform temperature surfaces 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 0.55 0.4 0.75 0.45 0.55 0.4 0.75 0.45 ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The critical temperature is the temperature Below which a gas is always liquefied Above which a gas may explode Below which a gas does not obey gas laws Above which a gas will never liquefied Below which a gas is always liquefied Above which a gas may explode Below which a gas does not obey gas laws Above which a gas will never liquefied ANSWER DOWNLOAD EXAMIANS APP
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