PROCESS EQUIPMENT AND PLANT DESIGN QUIZ

In case of a 'thin' pressure vessel, the ratio of its diameter to wall thickness is

> 20

> 10

30

< 10

TRUE ANSWER : ?
YOUR ANSWER : ?

Rate of filtrate delivery is inversely proportional to the

Filtering area & the pressure difference driving force

Cake & filter medium resistance

Both A & B

Viscosity of filtrate

TRUE ANSWER : ?
YOUR ANSWER : ?

Two iron pipes of the same nominal diameter but different schedule numbers will have the same

Outside diameter

None of these

Wall thickness

Inside diameter

TRUE ANSWER : ?
YOUR ANSWER : ?

For turbulent flow (NRe > 2100) of low viscosity fluid (μ > 20cp) in steel pipes, the optimum inside pipe diameter is given by(where, Q = fluid flow rate, ft³/sec.ρ = fluid density, lb/ft³ μ = fluid viscosity, centipoise Di = optimum inside pipe diameter, inches)

Di, opt = 3.9 Q0.45 . μ0.95

Di, opt = 3.9 Q0.45 ρ0.13

Di, opt = 4.7 Q0.36 . μ3.2ρ0.13

Di, opt = 3 Q0.36 . μ0.88

TRUE ANSWER : ?
YOUR ANSWER : ?

In hydrostatic testing of welded pipe (for leakage, strength etc.) the ratio of minimum hydrostatic test pressure to internal design pressure is around

3.5

2.5

0.5

1.5

TRUE ANSWER : ?
YOUR ANSWER : ?

The normal range of velocity of steam in pipes is __________ m/sec.

0.1-0.5

10-20

80-100

1-5

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following factors affect the pressure drop in a co-current gas-liquid absorption packed tower?

Fluid flow rates

Density and viscosity of fluids

Size, shape, orientation and surface of the packing particles

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

In actual operation of distillation column, the vapour is not distributed uniformly among the bubble caps, primarily because of the

Small downcomer liquid seal

Lower static submergence

Liquid gradient on the tray

Lower skirt clearance

TRUE ANSWER : ?
YOUR ANSWER : ?

A cylindrical storage tank can have a self supported conical roof,

Irrespective of its diameter

If its diameter is more than 50 meters

If its diameter is less than 15-20metres

If the thickness of the roof is more than that of the cylindrical shell

TRUE ANSWER : ?
YOUR ANSWER : ?

Seamless pipe is made

By extrusion & casting into static and centrifugal molds

By forging a solid round, piercing it by simultaneously rotating & forcing it over a piercer point and further reducing it by rolling gas drawing

From rolled strips formed into cylinders and seam-welded

Both B and C

TRUE ANSWER : ?
YOUR ANSWER : ?