Heat Transfer A concentric double pipe heat exchanger as compared to the shell and tube heat exchanger for the same heat load requires More space Less heating surface Lower maintenance cost None of these More space Less heating surface Lower maintenance cost None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For condensation of pure vapors, if the heat transfer co-efficients in filmwise and drop-wise condensation are respectively hf and hd, then hf < hd hf = hd hf could be greater or smaller than hd hf > hd hf < hd hf = hd hf could be greater or smaller than hd hf > hd ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer When does the heat generated by fluid friction becomes appreciable compared to the heat transferred between the fluids? At low velocity None of these At high fluid velocity When fluid flows past a smooth surface At low velocity None of these At high fluid velocity When fluid flows past a smooth surface ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The number of kg vaporised per kg of steam fed to the evaporator is defined as Rate of evaporation Capacity Rate of vaporisation Economy Rate of evaporation Capacity Rate of vaporisation Economy ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The average heat transfer co-efficient over the entire length of the plate (ha) and the local heat transfer co-efficient (hL), in case of heat transfer over a flat plate in lminar zone is related as Ha= 5hL Ha = 0.8hL Ha = 2hL Ha = hL Ha= 5hL Ha = 0.8hL Ha = 2hL Ha = hL ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Trap is used to remove __________ from steam pipe lines. Steam Non-condensables Condensate None of these Steam Non-condensables Condensate None of these ANSWER DOWNLOAD EXAMIANS APP
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