For large heat transfer area requirement, shell and tube heat exchanger is preferred, because it Is easy to operate and maintain Is more economical All of these Occupies smaller space TRUE ANSWER : ? YOUR ANSWER : ?
Pick out the correct equation. JH = (St)(Pr)2/3 = f/2 JH = (St)(Pr)1/3 = f/2 JH = (St)2/3(Pr) = f/2 JH = (St)1/3(Pr) = f/2 TRUE ANSWER : ? YOUR ANSWER : ?
LMTD can't be used as such without a correction factor for the Condensation of mixed vapour in a condenser Baffled heat exchanger Multipass heat exchanger All of these TRUE ANSWER : ? YOUR ANSWER : ?
Use of transverse baffles in a shell and tube heat exchanger is done to increase the Turbulence of shell side fluid All of these Flow velocity Rate of heat transfer TRUE ANSWER : ? YOUR ANSWER : ?
The outlet temperature of cooling water in a heat exchanger is generally not allowed to exceed above 50°C in industrial practice mainly to avoid Excessive corrosion Its evaporation loss Uneconomic LMTD Decrease in heat exchanger efficiency TRUE ANSWER : ? YOUR ANSWER : ?
Heat produced when a steady state current, I passes through an electrical conductor having resistance, 'R' is I2R IR IR2 None of the listed here TRUE ANSWER : ? YOUR ANSWER : ?
The equivalent diameter for pressure drop is __________ that for heat transfer None of the listed here equal to smaller than greater than TRUE ANSWER : ? YOUR ANSWER : ?
A multiple effect evaporator as compared to a single effect evaporator of the same capacity has Lower heat transfer area Lower steam economy Higher solute concentration in the product Higher steam economy TRUE ANSWER : ? YOUR ANSWER : ?
Small scale evaporation is done in a Condenser Multiple effect evaporator Steam jacketed kettle Heat exchanger TRUE ANSWER : ? YOUR ANSWER : ?