Heat Transfer Heat transfer efficiency leading of energy conservation in a heat exchanger can be achieved by Keeping the heat transfer surface clean Increasing the tube length None of these Enhancing the fluid pumping rate Keeping the heat transfer surface clean Increasing the tube length None of these Enhancing the fluid pumping rate ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer With increase in temperature, the total emissivity of conductors Decreases linearly Decreases Remains same Increases Decreases linearly Decreases Remains same Increases 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. Either A, B or C Arithmetic Geometric Logarithmic Either A, B or C Arithmetic Geometric Logarithmic ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer __________ heat exchanger is the most suitable, when the temperature of shell side fluid is much higher than that of tube side. Single pass, fixed tube sheet Three pass, fixed tube sheet None of these U-tube Single pass, fixed tube sheet Three pass, fixed tube sheet None of these U-tube ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Radiator of an automobile engine is a __________ type of heat exchanger. Co-current Counter-current Cross-current Direct contact Co-current Counter-current Cross-current Direct contact ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The thermal radiation emitted by a body is proportional to Tn, where T is its absolute temperature. The value of 'n' is exactly 4 for All bodies Polished bodies only A black body Black painted bodies only All bodies Polished bodies only A black body Black painted bodies only ANSWER DOWNLOAD EXAMIANS APP
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