If ‘D’ is the inside diameter of the shell of a shell and tube heat exchanger, then the baffle spacing is usually in the range of__________________?

A. Same
B. Less
C. About 3 times
D. About 0.33 times

A. Of its flexibility and nearly constant efficiency under varying conditions of operation
B. It incurs less pressure drop as compared to any other try designed for the same duty
C. It eliminates the foaming and entrainment tendency during operation
D. None of these

A. Number of theoretical plates
B. Static submergence
C. Allowable vapour velocity
D. Length of straight rectangular weir on cross-flow tray

A. Radial flow
B. Cross flow
C. Split flow
D. Cascade

A. Tube dia is 3-6 cms, while tube length in 3-6 metres
B. Steam is fed to the shell, whereas the liquor is filled inside the tube
C. Liquor level is maintained at 1/3rd to 1/2 of the height of the tube
D. None of these

A. Hemispherical
B. Torispherical
C. Conical or flat plate
D. Elliptical