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? Long vertical evaporator Agitated film evaporator Horizontal tube evaporator Calenderia vertical tube evaporator Long vertical evaporator Agitated film evaporator Horizontal tube evaporator Calenderia vertical tube evaporator ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The radiation heat flux from a heating element at a temperature of 800°C, in a furnace maintained at 300°C is 8 kW/m². The flux, when the element temperature is increased to 1000°C for the same furnace temperature is 14.6 kW/m² 12.0 kW/m² 16.5 kW/m² 11.2 kW/m² 14.6 kW/m² 12.0 kW/m² 16.5 kW/m² 11.2 kW/m² ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In case of heat transfer by conduction in a hollow cylinder, __________ mean area is used to calculate the heat transfer rate. Geometric Arithmetic Either A, B or C Logarithmic Geometric Arithmetic Either A, B or C Logarithmic ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Absorptivity and refletivity of a perfect black body are respectively 1 and 0 1 and ? 0 and 1 0 and 0.5 1 and 0 1 and ? 0 and 1 0 and 0.5 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The critical radius 'r' of insulation on a pipe is given by r = k/h r = h/k r = k/2h r = 2k/h r = k/h r = h/k r = k/2h r = 2k/h ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat exchangers operating, when the asymptotic range is reached, Provide very large heat transfer co-efficient Results in making part of the heating surface inactive Results in abruptly increased velocity None of these Provide very large heat transfer co-efficient Results in making part of the heating surface inactive Results in abruptly increased velocity None of these ANSWER DOWNLOAD EXAMIANS APP
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