Process Equipment and Plant Design Value of Peclet number = ∞, is the representative of Plug flow Eddy diffusivity = 0 Laminar flow Complete back mixing Plug flow Eddy diffusivity = 0 Laminar flow Complete back mixing ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design In perforated plate towers, the Hole sizes may be around 1/8" or 3/16" All of these Total hole area may be around 6 to 15% of tower cross-sectional area Pressure drop is less compared is similar bubble cap towers Hole sizes may be around 1/8" or 3/16" All of these Total hole area may be around 6 to 15% of tower cross-sectional area Pressure drop is less compared is similar bubble cap towers ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Bracket supports are the most suitable for supporting __________ vessels. Thick walled vertical Thin shperical (e.g. Horton sphere) None of these Horizontal Thick walled vertical Thin shperical (e.g. Horton sphere) None of these Horizontal ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Overall distillation column efficiency for most of the refinery columns can be given by (for μ = 0.07 - 1.4 cp and relative volatility < 4) (where η = overall column efficiency, % μ = molal average viscosity of feed at average column temperature and pressure, cp Δp = pressure drop per tray, psi) Η = 0.25 log μ - 1.67 Η = 1.66 - 0.25 log μ Η = 17 - 61.1 log μ Η = 24.6 (Δp/μ) Η = 0.25 log μ - 1.67 Η = 1.66 - 0.25 log μ Η = 17 - 61.1 log μ Η = 24.6 (Δp/μ) ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Liquid/petroleum fuel storage tanks are built underground (as in case of petrol pumps), when the storage capacity is less than __________ kilolitres. 85 30 20 45 85 30 20 45 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design 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. Decrease by 22 None of these Increase by 21.6 Increase by 1.8 Decrease by 22 None of these Increase by 21.6 Increase by 1.8 ANSWER DOWNLOAD EXAMIANS APP
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