IFS Chemical Engineering question paper, 2007, Indian Forest Service, test papers

SECTION A

1. Answer any four of the following (10 × 4 = 40)(a) (i) How is friction factor defined and what are the parameters on which it is dependent? (5)
(ii) What are the different types of conveyers available for bulk solid transportation? (5)
(b) Distinguish between ‘Adiabatic Saturation Temperature’ and ‘Wet Bulb temperature’. Explain why both these are same for air-water system. (10)
(c) Discuss caking of crystals and its prevention. (10)
(d) Distinguish between resistances in series and resistances in parallel through which heat is being conducted under steady-state condition. Explain using electrical analogy. (10)
(e) Differentiate among nucleate boiling, pool boiling and subcooled boiling. (10)
2. (a) How do you use stress-strain relationship to explain the rheological classification of fluids? Explain with examples. (10)(b) Derive the continuity equation. State the assumptions. (10)
(c) (i) List the advantages and disadvantages of plate and frame filter press. (5)
(ii) State the two laws of crushing and write suitable mathematical relationships for the two laws. (5)
(d) (i) Explain the basis for the selection of mixing impellers. (5)
(ii) Briefly explain the mechanism of fluidization. (5)
3. (a) (i) Bring out clearly the concept of film transfer coefficient and overall transfer coefficient in mass transfer. (5)
(ii) Explain briefly the diffusivity of gases and liquids. (5)
(b) (i) Discuss the mass transfer resistances in a wetted column. (5)
(ii) Write briefly on Shank system of leaching. (5)
(c) With a neat drying rate curve, explain different zones of drying. (10)(d) What a1e the limitations of McCa1e-Thiele method? How are these overcome in Ponchon- Savarit method? (10)
4. (a) (i) What is LMTD, and why and where is it used? (5)
(ii) Obtain the relationship between individual and overall heat transfer coefficients. (5)
(b) (i) State and explain the Stefan-Boltzmann law of radiation.  (5)
(ii) Write a note on absorption of radiation by opaque solids. (5)
(c) (i) What is the influence of boiling point elevation on evaporator performance? (5)
(ii) Briefly describe a vapour compression evaporator. (5)
(d) Write the design procedure for a double pipe heat exchanger. (10)

SECTION B

5. Answer any four of the following (10 × 4 = 40)(a) Explain the principle, of reverse osmosis. What are its limitations and applications? (10)
(b) List out the factors to be considered in the design of vessels. (10)
(c) Name the different supports used for process vessels mentioning their advantages and disadvantages. (10)
(d) Explain with sketches the working principles, installation and applications of thermocouples for temperature measurement. (10)
(e) Explain the working of a PID control system. Draw a pneumatic control circuit for this system and explain the characteristics. (10)
6. (a) Explain the principle of ultra filtration and list out its industrial applications. (10)(b) Discuss the industrial applications of ion exchange process. (10)(c) Explain any two methods for separating a binary liquid mixture stating the underlying principles. (10)(d) Explain the working of an instrument based on electro dialysis. (10)
7. (a) Explain the design equations for calculating the thickness of cylindrical and spherical shells. How will you select a standard plate for fabricating a shell? (10)(b) Write down the stepwise procedure for the design of an elliptical head. (10)(c) Name the different stresses acting on a tall vessel which is to be installed in a seismic zone. (10)(d) Mention any five industrially important alloys of Nickel and Copper. Give their approximate composition and application. (10)
8. (a) With a neat diagram, describe the radioactive vacuum gauge method for measuring pressrue in a process industry. (10)(b) Sketch the following function and obtain the Laplace transform. (10)
(c) (i) Explain in practical terms, how one tunes a feedback controller for an existing process in a chemical plant. (5)
(ii) Define phase margin and gain margin, and show how you can compute them from Bode Plot. (5)
(d) Develop a transfer function between the pressure drop and the manometer reading h for a mercury manometer. List the assumptions made. (10)

IFS Chemical Engineering question paper, 2007, Indian Forest Service, test papers

SECTION A

1. Answer any four of the following :
(10 × 4 = 40)
(a) Prove that the velocity profile in a laminar flow of a Newtonian fluid through a circular pipe
is a parabola.
(b) (i) Differentiate between differential and cumulative analysis to find the average size of
the sample.
(ii) Derive the expression for the critical speed of a ball mill. Mention the meanings of
symbols and their units clearly.
(c) Define humidification and dehumidification, Explain the working of a water cooling tower
with a neat diagram.
(d) Derive the relation between rate of heat transfer and resistances in series in a composite wall.
2. (a) Starting from the first principles, obtain Bernoulli’s equation from momentum balance in
potential flow and extend the equation for practical applications.
(10)
(b) Define capacity and effectiveness of a screen. Derive an expression for the overall
effectiveness of a screen.
(10)
(c) Explain different types of fluidisation and their applications.
(10)
(d) Give a critical account of Rittinger’s and Bond’s laws.
(10)
3. (a) Explain the mechanism of drying during the constant rate and failing rate periods. Discuss the
effects of humidity and velocity of the gas on drying rate.
(10)
(b) Mention the various types of crystallisation equipment used in the process industry. Explain
the working of any one of the crystallisers with a neat diagram.
(10)
(c) Write the suitable conditions for liquid- liquid extraction. Discuss the importance of
equilibrium distribution coefficient and selectivity in the choice of a solvent.
(10)
(d) Write the procedure in detail for the design of a distillation column by Mc Cabe-Thiele
method.
(10)

4. (a) Discuss briefly the various regimes in boiling heat transfer.
(10)
(b) Describe the construction of shell and tube heat exchanger with a neat sketch.
(10)
(c) Define the capacity and steam economy of an evaporator. Discuss the effect of boiling point
elevation on evaporator performance.
(10)
(d) Air is heated in air heather from 30° C to 110°C and the hot gases are cooled from 210° C to
145°C. calculate the LMTD in parallel and counter glows. Give critical comments of the
values obtained.
(10)
SECTION B

5. Answer any four of the following:
(10 × 4 = 40)
(a) Discuss various types of membranes.
(b) Write the design procedure of either torispherical head or elliptical head.
(c) Mention the principal stresses induced in a vessel. How they act over the vessel.
(d) Differentiate between pneumatic and electronic controllers.
(e) List the various liquid level measuring instruments. Give their range and applications.
6. (a) Compare and contrast the terms— osmosis” and “reverge osmosis”.
(10)
(b) Discuss the principles of ultrafiltration. Mention its applications.
(10)
(c) Describe the processes of dialysis and also of electrodialysis. Write their applications.
(10)
(d) Briefly discuss about “Super critical fluid extraction”.
(10)
7. (a) Discuss the selection of material of construction for pressure vessels.
(10)
(b) Explain the design procedure for vertical type storage vessels.
(c) Mention various types of heads commonly used in cylindrical vessels and list their
applications.
(10)
(d) Define joint efficiency. Mention the factors influencing the choice of supports.
(10)
8. (a) Explain the working principles involved in various pressure measuring instruments.
(10)
(b) (i) Explain the negative and positive feedback control system.
(5)
(ii) Explain the servo and regulatory control problems.
(5)
(c) What are the elements of computer based process control? Explain their functions.
(10)
(d) What are phase and gain margins? Discuss the bode stability criterion.

What is aliquid and its properties

Liquid is defined as a material which will take the shape of the container. It is one of the three classical states of matter.

Examples: water, ethanol, most of the organic solvents.

Liquids tend to have better thermal conductivity than gases, and the ability to flow makes a liquid suitable for removing excess heat from mechanical components. The heat can be removed by channelling the liquid through a heat exchanger, such as a radiator, or the heat can be removed with the liquid during evaporation

Liquid is the primary component of hydraulic systems, which take advantage of Pascal's law to provide fluid power. Devices such as pumps and waterwheels have been used to change liquid motion into mechanical work since ancient times. Oils are forced through hydraulic pumps, which transmit this force to hydraulic cylinders. Hydraulics can be found in many applications, such as automotive brakes and transmissions, heavy equipment, and air-plane control systems. Various hydraulic presses are used extensively in repair and manufacturing, for lifting, pressing, clamping and forming

Mechanical properties:

Volume:  Commonly liquids are measured in the units of volume. SI units for volume are m³.

Pressure:
Hydrostatic head is the main property of the liquid. This hydrostatic head is calculated as P= h*rho*g. h = height of the liquid column, rho = density of the liquid, g = acceleration due to gravity.

EIL Aptitude paper 2, Engineers India Limited, question paper, Electrical, Electronics technical paper, with aptitude

Technical section:



1) Bucholz relay is..................
a. Gas actuated relay
b. Current sensing device
c. Voltage sensing device
Ans: a



2)Shunt is made up of .........
a. Copper
b. Tungsten
c. Maganin
Ans: c



3)In a 4kva ,400/200 v m/c the value of impedance & reactance are given as 0.002 & 0.006 .what will
be the new values of them when referred to the h.v side.
a. 0.2,0.6
b. 0.08,0.036
c. 0.4,0.12



4)Metallic sheath is used to .........
a. prevent the cable from moisture
b. provide mechanical strength
Ans: b



5) Of the following bridges the one which can be used for the measurement of dielectric loss of a
capacitor is –
a. Schering bridge ..........
b.Heaviside campbell equal ratio voltage
c. Owen bridge
d. Anderson bridge
Ans. a. Schering bridge



6)Diac is a...............
a. 3-layer ,2-junction
b. 2-layer,3-junction
c. 4-layer,3-junction



7)Load voltage equation of step up chopper.........
a. v(1-a)
b. v/(1-a)
Ans: b



8)Which is not realated to ckt breaker.........
a. conservator
b. explosion pot
c. operating mechanism
Ans: a



9) Coefficient of reflection of short transmission line is........
a. 1
b. -1
c. 0
d. infinite
Ans: b



10)1st nuclear power plant located at .......
a. trombay
b. kalpakkam
c. tarapur
Ans: tarapur



11)If a current setting is given as 25%, ct ratio is 400/5 then find pick up value......
a. 6.25
b. 0.25
c. 4
Ans: a



12. d.c chopper converts .......
a. ac to ac
b. ac to dc
c. dc to dc
d. dc to ac
Ans:c



13)In a controlled rectifier , the nature of load current i.e, whether load current is continous or
discontinous is
a. does not depend on type of load & firing angle delay
b. depends on load & firing angle delay
c. depends only on type of load
d. depends only on firing angle delay
Ans:b



14)For thyrister pulse triggering is preferred on dc trigerring because..........
a. gate dissipation is low
b. pulse system is simpler
c. triggering system is required for very short duration
d. all of these
Ans:d



15)Thyristers are basically ..........
a. scr’s
b. triac’s
c. both scr’s and triac’s
d. all pnpn devices
Ans : d



Non tech section
The nontech section comprises of only g.k questions
1)Vijay singh, who is golf player belongs to .................
a. maritus
b. Maldives
c. Kenya



2)LTTE associated with...........
a. Bangladesh
b. Bhutan
c. shrilanka
d. Nepal
Ans:a



3)S.Sainath related to.........
a. journalism
b. t.v hosting



4)OPEC ‘s headquarter is located at ...............
a. Vienna
b. gienna
c. maxico
Ans:a



5)Jawaharlal Nehru award given to which country...........
a. mexico
b. u.s.a



6)Which contry first started carbon tax...........
7)Nobel prize is equivalent to
a. raman magsasse
b. abel prize



8)The book “the elephant ,tiger and the cell phone is written by
a. Amartya Sen



9)First women leader of INC was
a. Anne becent
b.Sarojini naidu
Ans:a



10)The book Anand math is written by.............
a.B.C Chatterji
b. Rabindranath tagorre



11)APJ abdul kalam associated with..........
a. gslv
b. pslv
c. slv
12)Nilgiri hills is famous for ..........
a. tea
b. coffee
c. rubber
d. spices



13)Olympic 2012 are going to be held at
a. London
b. Bejieng
Ans: London



14)The sentence ‘the way the wind flows ‘means........
a. how the things are
b. how the things are made
c. how we make the things



15)I hope that u _______ come for a cup of tea tomarrow
a. shall be
b. would be
c. will be



16)Pongal is a festival of
a. Karnatka
b. Andra Pradesh
c. West Bengal
d. Tamil nadu



17)Tajmahal was to be built originally at.........
a. M.P
b. Orissa
c. West Bengal
c. Rajasthan



18)Pravasi bhartiya divas was celebrated on........
a. 9 jan
b. 16 april
Ans:a
19)Kajiranga national park is famous for........
a. ryhno
b. lion
c. deer
Ans: a

EIL Sample Paper 2,Instrumentation, question paper pattern, General Knowledge, current affair questions

Time: 2hrs. (10am-12noon)
No. of questions :
Section-1 (General Knowledge, Current Affaires & English) – 50 qs
Section-2 (Technical) – 100 qs

There were sets A,B,C,D. Although they had same questions but in different order. We were instructed to use Pen for marking our answers in the OMR sheet. So plz be careful.

Section-1 (General Awareness, Current Affairs & English)
There were simple GK and English questions. For GK & Current affairs u can read ‘Manorama Year Book’.

Questions:

1.Which of the following is not among the new 7 wonders of the world?
a) Taj Mahal b) Machu pichu c) The Great Canyon d).... A: c) Great Canyon

2.Kaziranga of Assam is famous for?
a)Lion b)Rhino c)Tiger d)deer

3.First silent Indian movie?
a) raja harishchandra b) Alam ara c) Pundalik d)....
A: b) Rhino


4.Headquaters of OPEC? (This question was common in 2008 & 2009)
a) Vienna b) Geneva c) ... A: a) Vienna

5.two golden arches are found in logo of ....
a) KFC b)Frito Lays c) McDonald’s A: c)Mcdonald’s

6.ANIMAX is associated with....
a) Sony b)Zee c)Star A: a) Sony

7.Sunderbans of West Bengal is famous for...
a) Mangroves b) tropical forest c) wetlands A: a) Mangroves

8.The famous Indian Golf player Vijay Singh is from which country?
A: Fiji

9.First Lady president of Indian National Congress?
a) Sarojini Naidu b) Anie Besant A: b) Annie Besant

10.Olympics 2010 is be held in which city?
A: London




11.Thorium has been recently found in which country?
a) Australia
b) Norway
C)Sweden
d)....

12.In which state Taj mahal was first decided to be made?
a) Rajasthan b) Orissa c)... d)...

13.LTTE is associated with which country?
A: Sri Lanka

14.Concur means ....

15. Euthanasia was first legalized in which country?
A: Switzerland

16. ‘Science Express’ campaign was held in collaboration of India and which country?
a) Japan b) France c)... d)...

17.’Anand Math’ was written by...
a) Rabindranath Tagore b) BC Chatterjee
c)...
d)..
A: b)BC Chatterjee

18.Prabashi Bharatiya Divas is celebrated on
a) 9th Jan b) 3rd dec c) .... d).... A: a) 9th Jan

19.Name of the meeting point of Bhagirathi n Aloknanda
a) Rudra prayag b) Vishnu prayag c)... d)...

20.Maximum capacity of power projects recently launched in India
a)2500 b)4500 c)... d)...

21.Progeon is the BPO of which company?
a) Infosys b)Wipro c) Satyam d) Oracle A: a) Infosys

I don’t remember anymore....

Section-2 (Technical)
Go through the MCQs (transducer n other chapters) in AK Shawney. No qs from Control System.
Topics from which question were asked:




PLC, Industrial Instrumentation, Measurement, Transducers, Microprocessor(2 qs)

1.Simple PLC logic diagrams (AND, OR logics). Around 7-8 questions were there on this topic.

2.Gas Chromatography

3.Rotameter is used for measurement of...
A) Flow B) Pressure C) Rotation D) Speed

(Two qs on Rotameter)

4.Which of the following interrupts has highest priority?
a) Trap b) RST 7.5 c) INTR d) RST 5.5

5.Address of TRAP in microprocessor

6.How many NAND gates are needed for realization of the logic (simple logic) “... ... ... ... “

7.Descending order in respect of non-linearity... Among Thermister, RTD, Thermocouple.

8.Reset gain controller is another name of ...
a) Proportional b) Integral c) Derivative
d) Proportion + Integral Controller

9.One more question was there on P,PI,PID controller.

10.One question on Actuators n Valves

11.Venturi tube is called ______ type measurement.
A) Restriction B) Obstruction C)... D)...

EIL Aptitude paper 2, Engineers India Limited, question paper

EIL Aptitude Paper 2
1. How many litre are in one barrel?
RO: 159
2. Where is the OPEC head office located?
RO: Viyana
3. Which is the fiest Silence move?
RO: Harischanra
4. Animax channel belongs to which channel?
RO: Diseny
5. Whose wrote a famous book "AnandMatha" ? RO: B.C Chetergee
6. Which Institute A.P.J.Abdul Kalam associated? RO: PSLC
7. Which Country was the fisrt impose Corban Test?
8. Purgeon BPO unit associated with which Company?
9. Who is the first president of INC?
10.Which Prize is alternative of Nobel Prize?
RO: Child livelihood
11.Nilgiri is famous for which crops?
12.At which state Ganga & Alakhnanda meet?
13.Which country impose euthenesia first law?
14."Lithe" is belongs to which country?
15.P.Sainath belongs to which proffession?
16.M.S Swaminathan is belong to which commission?
17."The Cell, the elephant & the snak" who wrote this book?
18."pongal" festible belongs to which state?
19.Which dance is called "East of Bellet"?
20.Kangiranga park is famous for which animal?
RO: Rihno
21.The faomous golfer Vijay Singh is belong to which country? RO: Fiji
22.At which date "Pravasi Diwas" celebrated?
RO: 9 jan
23.Jawahar lal Nehru award is given to which country presidence in 2006?
24.2012 olyampic will be held on which country? RO: London
25.Golden arches product belong which country?
Some more questions are given on current affairs, 5-6 questions are from English crammer (easy) , if u
have the habit of reading newspaper then that questions will be easy. These are some questions from
general awareness. (50 questions in this section).

ONGC question papaer pattern, 2008, Mumbai, ONGC placement paper, written exam

DATE: 17th August 2008

PLACE: Mumbai

BRANCH: Electronics

Duration: 3 hours

There are two sections: 1) General Awareness 2) Subject Specialization. The test is of objective type except for thw descriptive one.

There are 50 qts in General Awareness section out of 40 needs to be attempted. Each qt carries 1 mark. 2 are of descriptive type. Each of 5 marks. So total comes to (40x1)+(5x2)=50.

Same is the case with other section i.e. Subject Specialization. In this section there are 75 qts out of which only 60 needs to be attempted. Each qt carries 1.5 mark. 2 again are of descriptive type. Each of 5 mark. So total comes to (60x1.5)+(5x2)=100.

I am writing some of the qts I remember.

General Awareness section:

1. how many judges are there in judicial system?

2. in 1919, which movement took place ?

a. Dandi March

b. Chauri Chaura movement

c. Lathi charge

d. Partition of W. Bengal

3. Which two continents are mirror images of each other?

4. Which of the foll. continents are arranged in descending order of their areas?

5. If a country is 12 hours GMT ahead of the other, then it must be situated at?

6. If a circle is inscribed in an equilateral triangle of side 2√3 units, then radius of the circle is?

7. There was a graph of area vs. Productivity & related to it was asked Production was high in 1979 & 1985 bcoz of?

8. India can increase production if?

9. The new compost in India is?

10. The non-conventional sorce of energy out of the foll. is?

11. Gupta empire declined bcoz?

12. If a judge has to resign, he should give his application to?

13. The judges are elected by the consent of President &?

14. The responsibility of elections is on?

Descriptive:

1. How should India conserve energy?
2. If you get selected in ONGC, what steps will you take to conserve energy?