In a distillation column, minimum clearance to be maintained betweeen the overflow weir and the last row of the bubble caps is __________ cms. 2.5 20 7.5 15 TRUE ANSWER : ? YOUR ANSWER : ?
The function of manholes provided in the shell of a distillation column is to Guard against foaming & entrainment by dumping antifoaming agent through it Give access to the individual trays for cleaning, maintenance and installation Keep a check on the liquid gradient over the plate by direct visual observation All of these TRUE ANSWER : ? YOUR ANSWER : ?
Triangular pitch tube layout as compared to square pitch in a shell and tube heat exchanger Permits the use of more tubes in a given shell diameter Permits the use of less tubes in a given shell diameter Both B and C Facilitates comparatively easier external cleaning because of large clearance TRUE ANSWER : ? YOUR ANSWER : ?
In the design of a paddle agitator, the ratio (paddle dia/tank dia) is normally taken as 0.25 0.5 0.8 0.1 TRUE ANSWER : ? YOUR ANSWER : ?
Column support for the roof of cylindrical storage tank must be provided for Small diameter tanks Small diameter tall tanks Large diameter tanks All of these TRUE ANSWER : ? YOUR ANSWER : ?
In which of the following evaporators, steam is fed inside the tube while the liquor is outside the tube? None of these Short tube vertical evaporator Horizontal tube evaporator Long tube vertical evaporator TRUE ANSWER : ? YOUR ANSWER : ?
Le/D for 90° elbow (medium radius) and 90°square elbow would be respectively around 25 and 60 3 and 5 100 and 250 250 and 600 TRUE ANSWER : ? YOUR ANSWER : ?
For laminar flow (NRe < 2100) in steel pipe, the optimum inside pipe diameter is given by Di, opt = 7.6 Q0.36 . ρ0.9 Di, opt = 3.9 Q0.45 . ρ0.23 Di, opt = 3 Q0.36 ρ0.18 Di, opt = 3 Q0.36 . ρ1.86 μ0.08 TRUE ANSWER : ? YOUR ANSWER : ?
In inclined long tube vertical evaporators, the tubes are inclined at an angle of 90° 15° 45° 60° TRUE ANSWER : ? YOUR ANSWER : ?
In a shell and tube heat exchanger, the 'tube pitch' is defined as the Shortest centre to centre distance between adjacent tubes O.D. of the tube for square pitch Shortest distance between two adj acent tube holes None of these TRUE ANSWER : ? YOUR ANSWER : ?