Heat and Mass Transfer Conduction is a process of heat transfer From one particle of the body to another without the actual motion of the particles From one particle of the body to another by the actual motion of the heated particles None of these From a hot body to a cold body, in a straight line, without affecting the intervening medium From one particle of the body to another without the actual motion of the particles From one particle of the body to another by the actual motion of the heated particles None of these From a hot body to a cold body, in a straight line, without affecting the intervening medium 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 0.75 0.55 0.4 0.45 0.75 0.55 0.4 0.45 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 Absorptive power Emissive power Absorptivity Emissivity Absorptive power Emissive power Absorptivity Emissivity ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The amount of heat flow through a body by conduction is Directly proportional to the temperature difference on the two faces of the body All of these Directly proportional to the surface area of the body Dependent upon the material of the body Directly proportional to the temperature difference on the two faces of the body All of these Directly proportional to the surface area of the body Dependent upon the material of the body ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The critical temperature is the temperature Above which a gas may explode Above which a gas will never liquefied Below which a gas is always liquefied Below which a gas does not obey gas laws Above which a gas may explode Above which a gas will never liquefied Below which a gas is always liquefied Below which a gas does not obey gas laws ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer A cube at high temperature is immersed in a constant temperature bath. It loses heat from its top, bottom and side surfaces with heat transfer coefficients of h₁, h₂ and h₃ respectively. The average heat transfer coefficient for the cube is h₁ + h₂ + h₃ (h₁.h₂.h₃)1/3 1/h₁ + 1/h₂ + 1/h₃ None of these h₁ + h₂ + h₃ (h₁.h₂.h₃)1/3 1/h₁ + 1/h₂ + 1/h₃ None of these ANSWER DOWNLOAD EXAMIANS APP
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