Heat Transfer In Fourier's law, the proportionality constant is called the Stefan-Boltzman constant Heat transfer co-efficient Thermal diffusivity Thermal conductivity Stefan-Boltzman constant Heat transfer co-efficient Thermal diffusivity Thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A composite wall consists of two plates A and B placed in series normal to the flow of heat. The thermal conductivities are kA and kB and the specific heat capacities are CPA and CPB for plates A and B respectively. Plate B has twice the thickness of plate A. At steady state, the temperature difference across plate A is greater than that across plate B, when KA>2 kB CPA < CPB KA < 0.5kB CPA > CPB KA>2 kB CPA < CPB KA < 0.5kB CPA > CPB ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Forced circulation evaporators are useful for the concentration of viscous, salting and scale forming liquors. Which of the following is a forced circulation evaporator? Agitated film evaporator Horizontal tube evaporator Calenderia vertical tube evaporator Long vertical evaporator Agitated film evaporator Horizontal tube evaporator Calenderia vertical tube evaporator Long vertical evaporator ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The outlet temperature of cooling water in a heat exchanger is generally not allowed to exceed above 50°C in industrial practice mainly to avoid Its evaporation loss Decrease in heat exchanger efficiency Uneconomic LMTD Excessive corrosion Its evaporation loss Decrease in heat exchanger efficiency Uneconomic LMTD Excessive corrosion ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Electromagnetic radiations propagate in vacuum with a velocity of __________ metre/second. 3 x l08 3 x l010 3 x l012 3 x l05 3 x l08 3 x l010 3 x l012 3 x l05 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For shell and tube heat exchanger, with increasing heat transfer area, the purchased cost per unit heat transfer area Increases Passes through a maxima Decreases Remains constant Increases Passes through a maxima Decreases Remains constant ANSWER DOWNLOAD EXAMIANS APP
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