Process Equipment And Plant Design — Part 2 MCQs with Explanations

d = 1.6$$\sqrt {\text{t}} $$ is the correct answer to “Diameter of rivet hole (d, mm) and the plate thickness (t, mm) are related by Unwin's formula as”. This question is standard in competitive examination syllabi for Process Equipment And Plant Design.

1 is the correct answer to “In a shell and tube heat exchanger, the overall heat transfer co-efficient is proportional to the tube side (volumetric flow rate) 0.8 . This is valid, only when the ratio of the tube side film resistance to the total resistance is almost equal to”. This question is standard in competitive examination syllabi for Process Equipment And Plant Design.

All of the above is the correct answer to “The retention time of material in a rotary dryer depends upon its”. This question is standard in competitive examination syllabi for Process Equipment And Plant Design.

10 is the correct answer to “In case of bubble cap distillation column of diameter greater than 1.2 metres, the cap diameter is roughly about __________ cms.”. This question is standard in competitive examination syllabi for Process Equipment And Plant Design.

Ellipsoidal (2 : 1) is the correct answer to “For a cylinderical internally pressurised vessel, which of the following closure types would withstand highest pressure, if each closure is of the same material and thickness”. This question is standard in competitive examination syllabi for Process Equipment And Plant Design.

Permits the use of more tubes in a given shell diameter is the correct answer to “Triangular pitch tube layout as compared to square pitch in a shell and tube heat exchanger”. This question is standard in competitive examination syllabi for Process Equipment And Plant Design.

Hold baffle in space is the correct answer to “In shell and tube heat exchangers, straight tie rods are used to”. This question is standard in competitive examination syllabi for Process Equipment And Plant Design.

All of the above is the correct answer to “In actual operation of a bubble cap distillation tower, the __________ at the bottom of the tower is more than that at the top of the tower.”. This question is standard in competitive examination syllabi for Process Equipment And Plant Design.

Increases is the correct answer to “Generally, as the length of the liquid path on a tray is increased beyond 5 ft, the overall column efficiency”. This question is standard in competitive examination syllabi for Process Equipment And Plant Design.

1-2 is the correct answer to “The normal range of velocity of water in pipes is __________ m/sec.”. This question is standard in competitive examination syllabi for Process Equipment And Plant Design.

1.5 d is the correct answer to “To avoid the tearing off the plate of an edge, the margin (i.e., the minimum distance from the centre of the rivet hole to the nearest edge of the plate) should be equal to”. This question is standard in competitive examination syllabi for Process Equipment And Plant Design.

More than that for fluid flow is the correct answer to “In a double pipe (concentric) heat exchanger, the hydraulic radius for heat transfer (for a fluid flowing through the annulus) would be”. This question is standard in competitive examination syllabi for Process Equipment And Plant Design.

D is the correct answer to “The approximate liquid depth in an agitation tank is equal to (where, d = tank diameter)”. This question is standard in competitive examination syllabi for Process Equipment And Plant Design.

Less than arithmetic mean value is the correct answer to “Log mean temperature difference in case of multi-pass shell and tube heat exchanger is always”. This question is standard in competitive examination syllabi for Process Equipment And Plant Design.

Ferrule is the correct answer to “Removable connection of tubes to tube sheet is called”. This question is standard in competitive examination syllabi for Process Equipment And Plant Design.

Back up condensate and cause water hammer in steam line is the correct answer to “An underdesigned steam trap will”. This question is standard in competitive examination syllabi for Process Equipment And Plant Design.

∞ is the correct answer to “The slope of operating line in the rectifying section of a distillation column is unity, if the reflux ratio is”. This question is standard in competitive examination syllabi for Process Equipment And Plant Design.

Radial is the correct answer to “Thin spherical shells subjected to internal pressure, develop __________ stresses.”. This question is standard in competitive examination syllabi for Process Equipment And Plant Design.

60° is the correct answer to “In chemical process equipments, the conical bottom heads used, usually has an apex angle of”. This question is standard in competitive examination syllabi for Process Equipment And Plant Design.

$${\sigma _{\text{h}}} = 2{\sigma _{\text{L}}}$$ is the correct answer to “In a cylinderical vessel subjected to internal pressure, the longitudinal stress $${\sigma _{\text{L}}}$$ and the circumferential stress, $${\sigma _{\text{h}}}$$ are related by”. This question is standard in competitive examination syllabi for Process Equipment And Plant Design.

Negative is the correct answer to “A binary liquid azeotropic mixture has boiling point higher than either of the components, when it shows __________ deviation from Raoult's Law.”. This question is standard in competitive examination syllabi for Process Equipment And Plant Design.

Positive is the correct answer to “A binary liquid azeotropic mixture has boiling point lower than either of the components, when it shows __________ deviation from Raoult's Law.”. This question is standard in competitive examination syllabi for Process Equipment And Plant Design.

0.6 to 0.7 is the correct answer to “Vapor velocity in a distillation column for non-foaming mixture is in the range of __________ times the flooding velocity.”. This question is standard in competitive examination syllabi for Process Equipment And Plant Design.

More than is the correct answer to “The wall thickness of thin cylindrical shell with hemispherical ends is __________ that of the spherical ends.”. This question is standard in competitive examination syllabi for Process Equipment And Plant Design.

0.1 to 0.25 is the correct answer to “Multiple blade paddle agitator is used for mixing high viscosity liquids/paste in which the paddle diameter is commonly 0.8 times the tank diameter. However, the width of the blade is in the range of __________ times the paddle diameter.”. This question is standard in competitive examination syllabi for Process Equipment And Plant Design.

1.5 to 2 is the correct answer to “The testing pressure of storage tanks and pressure vessels designed as per Indian standard codes should be about __________ times.the design pressure.”. This question is standard in competitive examination syllabi for Process Equipment And Plant Design.

$${\frac{1}{{30}}^{{\text{th}}}}$$ is the correct answer to “Maximum size of the raschig rings used in a packed tower is about __________ of the coloumn diameter.”. This question is standard in competitive examination syllabi for Process Equipment And Plant Design.

Twice is the correct answer to “Circumferential (hoop) stress in a thin cylindrical vessel under internal pressure is __________ the longitudinal stress.”. This question is standard in competitive examination syllabi for Process Equipment And Plant Design.

Twice is the correct answer to “The thickness of segmental baffles (25 -35% cut truncated plates usually) is generally __________ the tube wall thickness.”. This question is standard in competitive examination syllabi for Process Equipment And Plant Design.

2.5 to 5 is the correct answer to “Holes of a sieve tray are arranged in triangular pitch of __________ times the hole diameter.”. This question is standard in competitive examination syllabi for Process Equipment And Plant Design.

Two is the correct answer to “In a pressure vessel containing multiple openings of various dimensions at different parts, stress concentration at the edges of the opening is maximum which becomes negligibly small beyond the area covered by __________ times the hole diameter.”. This question is standard in competitive examination syllabi for Process Equipment And Plant Design.

1 to 1.5 is the correct answer to “For storing hazardous chemicals in large storage tanks, the minimum safe distance between the two tanks should range between __________ times the tank diameter.”. This question is standard in competitive examination syllabi for Process Equipment And Plant Design.

0.1-0.12 is the correct answer to “Baffle width is normally taken as __________ times the tank diameter.”. This question is standard in competitive examination syllabi for Process Equipment And Plant Design.

$${\frac{1}{{15}}^{{\text{th}}}}$$ is the correct answer to “In case of saddle packing (e.g., berl and intralox saddles), the maximum size of the packing should not exceed __________ of the column diameter.”. This question is standard in competitive examination syllabi for Process Equipment And Plant Design.

$$\frac{1}{{10}}\,{\text{to }}{\frac{1}{{15}}^{{\text{th}}}}$$ is the correct answer to “In packed towers provided with pall rings liquid redistributors are positioned at heights of every 6 metres or 5 - 10 times the column diameter, whichever is less. Maximum size of the pall rings should not exceed __________ of the column diameter.”. This question is standard in competitive examination syllabi for Process Equipment And Plant Design.

Both B and C is the correct answer to “Baffle spacing is generally __________ the I.D. of the shell.”. This question is standard in competitive examination syllabi for Process Equipment And Plant Design.

Both A & B is the correct answer to “In a shell and tube heat exchanger, tube side __________ of the mass velocity.”. This question is standard in competitive examination syllabi for Process Equipment And Plant Design.

Decreases is the correct answer to “In case of 1.5" heat exchanger tubes, the inside flow area __________ with decrease in BWG.”. This question is standard in competitive examination syllabi for Process Equipment And Plant Design.

0.6-0.8 times is the correct answer to “The length of straight rectangular weir used on cross-flow trays is generally __________ the column diameter.”. This question is standard in competitive examination syllabi for Process Equipment And Plant Design.

η = 17 - 61.1 log $$\mu $$ is the correct answer to “Overall distillation column efficiency for most of the refinery columns can be given by (for $$\mu $$ = 0.07 - 1.4 cp and relative volatility < 4) (where η = overall column efficiency, % $$\mu $$ = molal average viscosity of feed at average column temperature and pressure, cp Δp = pressure drop per tray, psi)”. This question is standard in competitive examination syllabi for Process Equipment And Plant Design.