Pick out the wrong statement about the design of seive plate column and the bubble cap column. The downcomer design and the residence time in the downcomer is almost same for seive plate and bubble cap columns Weir length for a bubble cap plate is the same as that for the seive plate Weir height in case of a bubble cap plate ranges from 50 to 150 mm and is higher than the seive plate Weir height for a bubble cap plate column is the same as that for a seive plate column TRUE ANSWER : ? YOUR ANSWER : ?
At equal mass velocities, the values of film co-efficients for gases as compared to that for liquids are generally. Unpredictable Same Lower Higher TRUE ANSWER : ? YOUR ANSWER : ?
Angled baffles are preferred in the agitation tank to control the swirling action; if the viscosity of the liquid to be mixed is about 200 poise. However, the baffle may be completely eliminated for mixing liquids having viscoisty above __________ poise. 600 1000 300 1500 TRUE ANSWER : ? YOUR ANSWER : ?
In the design of a bag filter, the gas temperature is an important consideration, as it affects the Gas viscosity All of these Gas density Fibre selection 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 Q0.36 . ρ1.86 μ0.08 Di, opt = 3.9 Q0.45 . ρ0.23 Di, opt = 3 Q0.36 ρ0.18 TRUE ANSWER : ? YOUR ANSWER : ?
The value of fouling factor depends upon the Velocity of process fluid containing suspended solids Characteristic of process fluid Suspended solids in the fluid All of these TRUE ANSWER : ? YOUR ANSWER : ?
With increase in temperature drop (in a shell and tube heat exchanger), the LMTD correction factor, FT Decreases very rapidly Increases very rapidly Remains constant Increases linearly TRUE ANSWER : ? YOUR ANSWER : ?
A shell may by termed as thin if its thickness to diameter ratio is less than 0.1. The factor which can be neglected in the calculation of membrane stresses is Elongation Bending Shear Deformation TRUE ANSWER : ? YOUR ANSWER : ?
If a single tube pass heat exchanger is converted to two passes; for the same flow rate, the pressure drop per unit length in tube side will __________ times. Increase by 1.8 Decrease by 22 Increase by 21.6 None of these TRUE ANSWER : ? YOUR ANSWER : ?
__________ shapedroof is the most commonly used roof for cylinderical storage tanks. Dome Umbrella Flat Conical TRUE ANSWER : ? YOUR ANSWER : ?