Process Equipment & Plant Design Mcqs for Chemical


Q.  In a double pipe (concentric) heat exchanger, the hydraulic radius for heat transfer (for a fluid flowing through the annulus) would be_________________?

a. Same as that for fluid flow
b. Less than that for fluid flow
c. More than that for fluid flow
d. D2 – D1 (D1 and D2 are I.D. of inner and outer pipes respectively)


ANSWER: See Answer
 
No explanation is available for this question!
MCQs:  A perforated plate has holes of diameter dn arranged in a pitch ph. Each hole has a tube of I.D. dt passing through it. The ligament efficiency is given by_______________?
Category: Chemical Engineering Mcqs,   Published by: teswesm
MCQs:  The thermal stress in a metallic bar does not depend upon the_____________________?
Category: Chemical Engineering Mcqs,   Published by: teswesm
MCQs:  Diameter of rivet hole (d, mm) and the plate thickness (t, mm) are related by Unwin’s formula as___________________?
Category: Chemical Engineering Mcqs,   Published by: teswesm
MCQs:  Steam is preferred to be used as a heating medium in heat exchangers, because of its_________________?
Category: Chemical Engineering Mcqs,   Published by: teswesm
MCQs:  Poisson’s ratio of a material is the ratio of unit lateral strain to the unit axial elongation within its elastic limit. The value of Poisson’s ratio for structural and pressure vessel steel may be taken as ____________________?
Category: Chemical Engineering Mcqs,   Published by: teswesm
MCQs:  The approximate liquid depth in an agitation tank is equal to (where, d = tank diameter)_________________?
Category: Chemical Engineering Mcqs,   Published by: teswesm
MCQs:  Lug support is meant for supporting _______________ vessels?
Category: Chemical Engineering Mcqs,   Published by: teswesm
MCQs:  In a rotary drier, the average retention time of solid is (where Z = length of the drier, metres ρ = apparent solid density, kg/m3 L = flow rate of dry solids, kg/see. m2 drier crosssection H = hold up of solid.) ?
Category: Chemical Engineering Mcqs,   Published by: teswesm
MCQs:  Optimum reflux ratio in a continuous distillation column is determined by the__________________?
Category: Chemical Engineering Mcqs,   Published by: teswesm
MCQs:  Bubble cap diameter used for the distillation column having diameter ranging from 1.5 to 4.5 metres is about ______________ mm?
Category: Chemical Engineering Mcqs,   Published by: teswesm
MCQs:  Thin spherical shells subjected to internal pressure, develop ______________ stresses?
Category: Chemical Engineering Mcqs,   Published by: teswesm
MCQs:  A single pass air heater is connected to a two pass unit. For the air flow rate and other conditions remaining the same, the film heat transfer co-efficient for air will vary in the ratio of_________________?
Category: Chemical Engineering Mcqs,   Published by: teswesm
MCQs:  A cylindrical pressure vessel of volume 6 πm3 has to be designed to withstand a maximum internal pressure of 10 atm. The allowable design stress of the material is 125N/mm2 and corrosion allowance is 2 mm. The thickness of the vessel for a length/diameter ratio of 3 will be close to________________?
Category: Chemical Engineering Mcqs,   Published by: teswesm
MCQs:  The ratio of down take area to cross-sectional area of the tube, for calandria type evaporator ranges from_________________?
Category: Chemical Engineering Mcqs,   Published by: teswesm
MCQs:  The thickness of heat transfer plates used in the plate type heat exchanger ranges from _____________ mm, pressed in a single piece provided with grooves & corrugations?
Category: Chemical Engineering Mcqs,   Published by: teswesm
MCQs:  Circumferential (hoop) stress in a thin cylindrical vessel under internal pressure is _____________ the longitudinal stress?
Category: Chemical Engineering Mcqs,   Published by: teswesm
MCQs:  The optimum size ratio for two mixed reactors in series depends on the kinetics of the reaction and the conversion level. For reaction orders more than one, the_________________?
Category: Chemical Engineering Mcqs,   Published by: teswesm
MCQs:  For turbine agitator, the impeller diameter is about_________________?
Category: Chemical Engineering Mcqs,   Published by: teswesm
MCQs:  Commercial packed scrubbers are normally designed for a pressure drop range of ______________ mm water column per metre of packed height?
Category: Chemical Engineering Mcqs,   Published by: teswesm
MCQs:  The slope of operating line in the rectifying section of a distillation column is unity, if the reflux ratio is___________________?
Category: Chemical Engineering Mcqs,   Published by: teswesm