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 Black painted bodies only All bodies Polished bodies only A black body Black painted bodies only All bodies Polished bodies only A black body ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer When does the heat generated by fluid friction becomes appreciable compared to the heat transferred between the fluids? None of these When fluid flows past a smooth surface At high fluid velocity At low velocity None of these When fluid flows past a smooth surface At high fluid velocity At low velocity ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Presence of a non-condensing gas in a condensing vapour is desirable to increase the film co-efficient increases the rate of condensation decreases thermal resistance None of the listed here is desirable to increase the film co-efficient increases the rate of condensation decreases thermal resistance None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Fresh orange juice contains 12% (by weight) solids and the rest water 90% of the fresh juice is sent to an evaporator to remove water and subsequently mixed with the remaining 10% of fresh juice. The resultant product contains 40% solids. The kg of water removed from 1 kg fresh juice is 0.7 0.4 0.5 0.6 0.7 0.4 0.5 0.6 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Reynold's analogy states that Nst α NRe Nst α f NRe α f NNu α f Nst α NRe Nst α f NRe α f NNu α f ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A multiple effect evaporator as compared to a single effect evaporator of the same capacity has Lower heat transfer area Lower steam economy Higher steam economy Higher solute concentration in the product Lower heat transfer area Lower steam economy Higher steam economy Higher solute concentration in the product ANSWER DOWNLOAD EXAMIANS APP
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