SECTION –B
5.
answer any four of the following :
(a)
Explain the concept of cross flow
microfiltration along with its advantages over conventional filtration.
(b)
Name various types of heads commonly used in
cylindrical vessels. Draw their sketches and list areas of applications.
(c)
Mention stepwise procedure for the design of a
torispherical head for a cylindrical vessel.
(d)
What is final value theorem? How is it used to
determine response of a system? Explain it with suitable examples.
(e)
Discuss cascade control and its application in
process industries
6.
(a) Describe procedure of immersion, precipitation
process for the production of membranes.
(b) Explain, with the aid of
a sketch, the working of an electro dialysis
(c) What is pervaporation?
Explain it with the help of a neat sketch and also indicate areas of its
application.
(d) Discuss ion-exchange separation process
for the demineralization of water.
7.
An autoclave of 7.9 m³ volume capacity has
ellipsoidal heads (major to minor axis ratio = 2:1) at its top and bottom ends.
The autoclave is subjected to a maximum
pressure of 8 MN/ m². The allowable stress of the material (carbon steel) is
1040 MN/ m² Weld joint efficiency is 85 %.
Determine optimum dimensions of the
autoclave if the following cost rations are applicable:
(a)
The cost of fabricated shell is estimated to
vary inversely with D¼ where D is the inside diameter of the autoclave.
(b)
The fabricated
cost of top and bottom heads per unit weight is 1.5 times the fabricated coast
of shell per unit weight.
A 12 mm place is available in store Check
if it can be used for the fabrication of shell of the autoclave. Alternatively,
suggest the suitable thickness of plate required for the fabrication of shell of
the autoclave.
8.
(a) What are phase margin and gain margin?
Discuss their utility in control tunings.
(c)
Discuss procedure for plotting of open loop
transfer function by root locus method.
(d)
How do you measure liquid level if the liquid
contains suspended solid particles? Suggest measuring instrument along with the
principle of working.
(e)
Explain elements of a computer control system.
