Heat and Mass Transfer Which of the following has least value of conductivity? Air Water Plastic Glass Air Water Plastic Glass 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 0.45 0.4 0.55 0.75 0.45 0.4 0.55 ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Free convection flow depends on Coefficient of viscosity Density All of these Gravitational force Coefficient of viscosity Density All of these Gravitational force ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The amount of radiation mainly depends upon the Nature of the body Type of surface of the body All of these Temperature of the body Nature of the body Type of surface of the body All of these Temperature of the body 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 Absolute temperature Cube of the absolute temperature Fourth power of the absolute temperature Square of the absolute temperature Absolute temperature Cube of the absolute temperature Fourth power of the absolute temperature Square of the absolute temperature ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer All radiations in a black body are Absorbed Refracted Reflected Transmitted Absorbed Refracted Reflected Transmitted ANSWER DOWNLOAD EXAMIANS APP
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