Heat Transfer Dropwise condensation of steam on cooling surface is promoted None of these When both the steam and the tube are clean Only in presence of air An oily surface None of these When both the steam and the tube are clean Only in presence of air An oily surface ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Reynold's analogy states that (where, St = Stanton number f = friction factor) St = f/4 St = f1/2 St = f/2 St = 4f St = f/4 St = f1/2 St = f/2 St = 4f ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer With increase in temperature, the thermal conductivity of steel Increases Increases exponentially Remains unchanged Decreases Increases Increases exponentially Remains unchanged Decreases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a shell and tube heat exchanger, putting a longitudinal baffle across the shell, forces the shell side fluid to pass __________ through the heat exchanger. Twice Once Four times Thrice Twice Once Four times Thrice ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In case of a vertical tube evaporator, with increase in the liquor level, the __________ is increased. Velocity of circulation Neither A and B Liquor-film co-efficient Both A and B Velocity of circulation Neither A and B Liquor-film co-efficient Both A and B ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat exchanger tubes are never made of Stainless steel Plain carbon steel Lead Copper Stainless steel Plain carbon steel Lead Copper ANSWER DOWNLOAD EXAMIANS APP
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