Heat Transfer Boiling point of a solution according to Duhring's rule is a linear function of the __________ of water. Density Viscosity Boiling point (at the same pressure) Thermal conductivity Density Viscosity Boiling point (at the same pressure) Thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Double pipe heat exchangers are used because it is less costly when heat transfer area required is very high because it occupies less floor area when heat transfer area required is very low because it is less costly when heat transfer area required is very high because it occupies less floor area when heat transfer area required is very low ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Analogy between mass and heat transfer is not applicable in case of Both B and C Thermal or pressure mass diffusion Viscous heating or chemical reaction Same velocity profile or equal eddy diffusivities Both B and C Thermal or pressure mass diffusion Viscous heating or chemical reaction Same velocity profile or equal eddy diffusivities ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A 10 cm dia steam pipe, carrying steam at 180°C, is covered with an insulation (conductivity = 0.6 W/m.°C). It losses heat to the surroundings at 30°C. Assume a heat transfer co-efficient of 0.8 W/m².°C for heat transfer from surface to the surroundings. Neglect wall resistance of the pipe and film resistance of steam. If the insulation thickness is 2 cms, the rate of heat loss from this insulated pipe will be Less than the steam pipe with 5 cms insulation Equal to that of the uninsulated steam pipe Less than that of the uninsulated steam pipe Greater than that for uninsulated steam pipe Less than the steam pipe with 5 cms insulation Equal to that of the uninsulated steam pipe Less than that of the uninsulated steam pipe Greater than that for uninsulated steam pipe ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following is correct ? Rate = Resistance/Driving force Rate = Driving force x Resistance Resistance = Driving force x Rate Driving force = Rate x Resistance Rate = Resistance/Driving force Rate = Driving force x Resistance Resistance = Driving force x Rate Driving force = Rate x Resistance ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer With increase in temperature, the total emissivity of conductors Remains same Increases Decreases Decreases linearly Remains same Increases Decreases Decreases linearly ANSWER DOWNLOAD EXAMIANS APP
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