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ENGINEERING MATERIALS AND METALLURGY ME2253 ANNA UNIVERSITY PREVIOUS YEAR QUESTION PAPER



B.E./B.Tech. DEGREE EXAMINATION, APRIL/MAY 2010 
Fourth Semester 
Mechanical Engineering  
ME2253 — ENGINEERING MATERIALS AND METALLURGY 
(Common to Automobile Engineering) 
(Regulation 2008) 
Time: Three hours  Maximum: 100 Marks 
Answer ALL Questions 
PART A — (10 × 2 = 20 Marks) 
1. State peritectic and peritectoid reactions.
2. Distinguish between steel and cast iron. Also classify  steel with respect to
carbon percentage.
3. Enumerate any two differences between annealing and normalizing.
4. Explain the term ‘induction hardening’.
5. List the parameters that can be determined from the tensile test.
6. Mention some of the disadvantages of Brinell hardness test.
7. What will be the effects, if the following elements alloyed with steel?
(a) Phosphorous
(b) Sulphur.
8. Write down the composition and any one application of the following alloys.
(a) Duralumin
(b) Brass.
9. Name any two polymers and state their applications.
10. Mention any four attractive properties of engineering ceramics.
PART B — (5 × 16 = 80 Marks) 
11. (a) (i) Draw Iron-carbon equilibrium diagram and label all the phases.
Also enumerate the properties of the following phase.
   (1) Ferrite
   (2) Austenite
   (3) Cementite.    (12)
  (ii) Define the following terms   (2 + 2)
    (1) Solid solution
    (2) Polymorphism.
Or
(b) (i) Explain Hume-Rothery rules of solid solubility.  (6)
  (ii) Discuss the composition, properties and application of the following
cast Iron
   (1) Malleable cast Iron
   (2) Spheroidal cast Iron.  (5 + 5)
12. (a) (i) Draw Time-Temperature-Transformation (T-T-T) diagram and label
all the phases. Also enumerate any four objectives of heat
treatment of steel.   (8)
  (ii) What is case hardening? Explain the following processes.
    (1) Carburizing
   (2) Nitriding.   (8)
Or
(b) (i) What is hardenability? Describe a test that is used for
determination of hardenability of steel. (8)
  (ii) Explain the different types of tempering process.  (4)
  (iii) State any four reasons for the formation quenching cracks. (4)

13. (a) (i) With neat sketches explain the mechanism of slip and twining. Also
state the differences between them.  (10)
   (ii) Draw creep curve and explain the different stages of creep damage.  
     (6)
Or
(b) (i) Draw S-N curve for ferrous and non-ferrous metals and explain how
endurance strength can be determined. Also discuss the factors that
affect the fatigue life.    (10)
  (ii) Define the term ‘hardness of metal’. With a neat sketch, explain the
hardness measurement by Rockwell method.  (6)
14. (a) (i) Write down the composition and applications of the following metal
   (1) Stainless steel
   (2) Tool steel.    (5 + 5)
  (ii) What is precipitation hardening? Illustrate this with an example. (6)
Or
(b) (i) Enumerate the composition and applications of following alloys.
     (1) Cupro nickel
    (2) Bronze


    (3) Bearing alloy.    (9)
  (ii)  State the effects of the following alloying elements in steel
     (1) Chromium
      (2) Molybdenum.    (4)
   (iii) State any three objectives of adding alloying elements on steel.  (3)
15. (a) (i) Explain the following terms with respect to polymers
    (1) Mechanical behaviour
   (2) Thermal behaviour
   (3) Electrical behaviour.  (12)
  (ii) What are the special properties of plastics that make them suitable
for engineering applications?  (4)
Or
(b) (i) Enumerate the properties of the following
   (1) Thermoplastics
     (2) Thermosetting plastic
    (3) Elastomers.    (12)
  (ii) Describe the concept of ‘Co-polymerization’.  (4)

HIGHWAY ENGINEERING CE2255 PREVIOUS YEAR ANNA UNIVERSITY QUESTION PAPER | CE 2255 HIGHWAY ENGINEERING QUESTION BANK MODEL QUESTION PAPER


      
B.E./B.Tech. DEGREE EXAMINATION, APRIL/MAY 2010 
Fourth Semester 
Civil Engineering 
CE2255 — HIGHWAY ENGINEERING 
(Regulation 2008) 
Time: Three hours  Maximum: 100 Marks 
Answer ALL Questions 
PART A — (10 × 2 = 20 Marks) 
1. State any two contributions made by Jayakar Committee for  the road
development in India.
2. Define ruling gradient and exceptional gradient.
3. What do you understand by non-passing sight distance?
4. Write down the requirements of an ideal transition curve.
5. How do you calculate the ESWL at given depth below the pavement for a dual
wheel assembly?
6. What is radius of resisting section?
7. Define ‘flaky aggregates’.
8. What is the purpose of applying tack coat in bituminous road construction?
9. When is overlay needed in pavements?
10. What is ‘unevenness index’?
PART B — (5 × 16 = 80 Marks) 
11. (a) (i) State and explain the economic factors influencing highway
alignments.    (8)
 (ii) Briefly explain the role of MORTH and IRC in highway
development.    (8)
Or

(b) Compare the three “Twenty year road development plan” in India. Also
discuss the merits of each one of them.  (16)
12. (a) A valley curve is formed due to two gradients +2.5% and –1.75%. If the
design speed of this highway is 80 kmph, determine the stopping sight
distance and design the valley curve to fulfill both comfort and head light
sight distance conditions.
Or
(b) What are the objectives of widening of road pavement at horizontal
curves? Derive an expression for the extra widening.
13. (a) (i) State the limitations of CBR method of pavement design.  (6)
 (ii) Using the following data, design the flexible pavements layers  (10)
  CBR of the sub-grade soil = 5%
  CBR of poorly graded gravel sub-base = 15%
  CBR of WBM = 80%
  Design life = 15 years
  Annual rate of increase in the heavy vehicles = 7.5%
  No. of heavy vehicles per day during last count = 200
  No. of years between the year of completion and year of last count =
3 years.
  Assume any other data found required.
Or
(b) (i) What are the objectives of joints in cement concrete pavement?
Sketch the different types of joints used in pavement construction.
Indicate the principle of design.  (10)
 (ii) Explain mud pumping. What are the causes for mud pumping and
how it can be prevented?   (6)


14. (a) Describe how impact value of aggregate and specific gravity of bitumen
are found by experiment in laboratory?  (16)
Or
(b) Explain the construction procedure of the following types of roads.
 (i) Dense Bituminous Macadam.   (8)
 (ii) Bituminous Concrete.    (8)
15. (a) Classify the different types of failures in flexible pavement and mention
the important causes of each.     (16)
Or
(b) (i) Explain the principle and uses of Benkelman Beam test.  (6)
 (ii) Describe the complete procedure of carrying out Benkelman Beam
test to evaluate the pavement with model calculation.  (10)

CONSTRUCTION TECHNIQUES, EQUIPMENT AND PRACTICE CE2203 ANNA UNIVERSITY PREVIOUS YEAR QUESTION PAPER | CE 2203 CIVIL QUESTION PAPER |



B.E./B.Tech. DEGREE EXAMINATION, APRIL/MAY 2010 
Third Semester 
Civil Engineering 
CE2203 — CONSTRUCTION TECHNIQUES, EQUIPMENT AND PRACTICE 
(Regulation 2008) 
Time:  Three hours  Maximum: 100 Marks 
Answer ALL Questions 
PART A — (10 × 2 = 20 Marks) 
1. What is the use of chemicals as retarders in concrete?
2. Why is curing done for concrete?
3. What is the necessity of providing construction joints?
4. Define Slip forms.
5. What is a box caisson? Where do we use it?
6. Name some equipment used for underground open excavation.
7. Define articulated structure.
8. What is an offshore platform?
9. Name the types of earthwork equipment.
10. What is meant by dredging?
PART B — (5 × 16 = 80 Marks) 
11. (a) (i) What is meant by Non-Destructive testing? (4)
 (ii) Explain an NDT method of testing hardened concrete. (12)
Or
(b) (i) What are the factors to be considered for mix design? Discuss. (4)
 (ii) Write the step by step procedure of mix design by IS method. (12)
12. (a) Explain the classification of stone masonry with sketches. (16)
Or


(b) (i) What are methods of providing DPC? Discuss. (6)
 (ii) What are the requirements of an ideal material for Damp Proofing?
Explain.   (10)
13. (a) What is a cofferdam? With the help of sketches explain various types of
Cofferdams.   (16)
Or
(b) Explain the types of shores in detail. (16)
14. (a) Explain the special forms for shells in detail. (16)
Or
(b) Discuss the support structure for heavy equipment. (16)
15. (a) Explain the pile driving in detail.  (16)
Or
(b) Explain the equipment used for tunneling. (16)

MECHANICS OF FLUIDS CE2202 PREVIOUS YEAR ANNA UNIVERSITY QUESTION PAPER| CE 2202 MECHANICS OF FLUIDS QUESTION BANK



B.E./B.Tech. DEGREE EXAMINATION, APRIL/MAY 2010 
Third Semester 
Civil Engineering 
CE2202 — MECHANICS OF FLUIDS 
(Regulation 2008) 
Time: Three hours  Maximum: 100 Marks 
Answer ALL Questions 
PART A — (10 × 2 = 20 Marks) 
1. Define the term continuum.
2. What is the difference between an ideal and a real fluid?
3. Distinguish between path lines, stream lines and streak lines.
4. To what type of flow is the concept of velocity potential and stream function
applicable?
5. What are the assumptions made in the derivation of Euler's equation?
6. Sketch the velocity and shear stress distribution for  laminar flow of an
incompressible fluid through a circular pipe.
7. Give four examples in every day life where formation  of boundary layer is
important.
8. What are the characteristics of laminar flow?
9. What are the applications of model testing?
10. Enumerate the applications of dimensional homogeneity.
PART B — (5 × 16 = 80 Marks) 
11. (a) (i) An open reservoir contains a liquid having density of 1.23 g/cc. At a
certain point the gauge pressure is 0.31 atmosphere. At what height
above the given point is the liquid level? (8)
 (ii) Define Viscosity. Explain the effect of temperature and pressure on
viscosity of liquids and gases.   (8)
Or
(b) (i) Explain the characteristics of non- Newtonian fluids in detail. (8)
 (ii) The velocity distribution for flow over a plate is given by
2
u =2y − y
where  u is the velocity in m/s at a distance y meters above the
plate. Determine the velocity gradient and shear stress at the
boundary and 0.15 m from it.   (8)
12. (a) Derive an expression for the depth of centre of pressure from free surface
of liquid of an inclined plane surface submerged in the liquid. (16)
Or
(b) (i) Derive the differential equation of continuity. (8)
 (ii) In a two dimensional incompressible flow, the fluid velocity
components are given by  u = x −4y and  v = −y −4x . Show that
velocity potential exists and determine its form as well as stream
function.   (8)
13. (a) A drainage pump has tapered suction pipe. The pipe is running full of
water. The pipe diameter at the inlet and at the upper end is 1 m and
0.5 m respectively. The free water surface is 2 m above the centre of the
inlet and centre of upper end is 3 m above the top of free water surface.
The pressure at the top end of the pipe is 25 cm of Hg and it is known
that loss of head by friction between top and bottom section is one tenth
of the velocity head at the top section. Compute the discharge in litre/sec.
Neglect loss of head at the entrance of the tapered pipe. (16)
Or
(b) Show that the momentum correction factor and kinetic energy correction
factor for laminar flow through a circular pipe are 4/3 and 2 respectively.
     (16)




14. (a) Explain what you understand by boundary layer thickness and
displacement thickness. Determine the relationship between the two for
a boundary layer which is
  (i) laminar throughout and
 (ii) turbulent throughout.  
  Assume :
  (1) in the laminar boundary layer, the flow obeys the law, shear
stress
dy
du
τ = where   is the viscosity, which leads to
velocity profile
2
(U −u) = k(δ − y) where  U is the free stream
velocity,  u is the velocity at a distance  y above the plate and
k is a constant.
  (2) the velocity distribution in the turbulent boundary layer is
given by
.   (16)
Or
(b) Derive an expression for the calculation of loss of head due to
 (i) sudden enlargement
 (ii) sudden contraction.   (16)
15. (a) Describe Buckingham’s  π – theorem to formulate a dimensionally
homogeneous equation between the various physical quantities effecting
a certain phenomenon.   (16)
Or
(b) By dimensional analysis, show that the power P developed by a hydraulic
turbine is given by




=
gH
N D
P N D f
2 2
3 5
ρ where  ρ – mass density of
liquid, N – rotational speed, D – diameter of runner, H – working head
and g – acceleration due to gravity.  (16)

MECHANICS OF SOLIDS CE2201 PREVIOUS YEAR QUESTION PAPER | CE2201 CE 2201 MECHANICS OF SOLIDS QUESTION BANK



B.E./B.Tech. DEGREE EXAMINATION, APRIL/MAY 2010. 
Third Semester 
Civil Engineering  
CE2201 — MECHANICS OF SOLIDS 
(Regulation 2008) 
Time: Three hours  Maximum: 100 Marks 
Answer ALL Questions 
PART A — (10 × 2 = 20 Marks) 
1. Define longitudinal strain and lateral strain. 
2. Write down the relation between modulus of elasticity and modulus of rigidity.
3. Give the methods used to analyze frames.
4. What do you mean by thin cylinder?
5. List any four types of beams.
6. What is the maximum bending moment for a simply supported beam subjected
to uniformly distributed load and where it occurs?
7. Write down the formula used to find the deflection of beam by Moment-Area
method.
8. Define shear stress.
9. A solid shaft of 150 mm diameter is used to transmit torque. Find the
maximum torque transmitted by the shaft if the maximum shear stress
induced to the shaft is 45N/mm SQUARE
10. Define springs. What are the different types of springs?
PART B — (5 × 16 = 80 Marks) 
11. (a) A tensile test was conducted on a mild steel bar. The following data was
obtained from the test:
 (i) Diameter of the steel bar  = 3 cm
 (ii) Gauge length of the bar  = 20cm
 (iii) Load at elastic limit  = 250 kN
 (iv) Extension at a load of 150 kN = 0.21 mm
 (v) Maximum load   = 380 kN
 (vi) Total extension  = 60 mm
 (vii) Diameter of rod at failure = 2.25 cm
 Determine:
    (1) The Young’s modulus
   (2) The stress at elastic limit
   (3) The percentage of elongation
   (4) The percentage decrease in area.
Or
(b) Three bars made of copper; zinc and aluminium are of equal length and
have cross section 500, 700, and 1000 sq.mm respectively. They are
rigidly connected at their ends. If this compound member is subjected to
a longitudinal pull of 250 kN, estimate the proportional of the load
carried on each rod and the induced stresses. Take the value of E for
copper =
5 2
1.3×10 N/mm , for zinc =
5 2
1×10 N/mm and for
aluminium =
5 2
0.8×10 N/mm .
12. (a) Determine the forces in the truss shown in Fig.(1) which is subjected to
inclined loads.
Fig.(1)
Or
 (b) A cylindrical vessel, whose ends are closed by means of rigid flange
plates, is made up of steel plate 3 mm thick. The length and internal
diameter of the vessel are 50 cm and 25 cm respectively. Determine the
longitudinal and hoop stresses in the cylindrical shell due to an internal
fluid pressure of
2
3 N/mm . Also calculate the increase in length,
diameter and volume of vessel. Take E =
5 2
2×10 N/mm and   =0.3.
13. (a) A simply supported beam of length 10m, carries  the uniformly
distributed load and two point loads as shown in Fig.(2) Draw the S.F
and B.M diagram for the beam and also calculate the maximum bending
moment.
Fig.(2)
Or
(b) (i) Derive an expression for
R
E
I Y
M
= =
σ
. (8)
 (ii) A rectangular beam 300 mm deep is simply supported over the span
of 4 m. Determine the uniformly distributed load per metre which
the beam may carry, if the bending stress should not exceed
2
120N/mm . Take
6 4
I=8×10 mm .  (8)
14. (a) A beam of length 6 m is simply supported at its ends and carries two
point loads of 48 kN and 40 kN at a distance of 1 m and 3 m respectively
from the left support. Find
  (i) Deflection under each load
  (ii) Maximum deflection
  (iii) The point at which the maximum deflection occurs.
Take E = 2 10 N/mm ,
5 2
× I =
6 4
85×10 mm .
Or


(b) (i) A timber beam of rectangle section is simply supported at the ends
and carries a point load at the center of the beam. The maximum
bending stress is
2
12 N/mm and maximum shearing stress is
2
1N/mm , find the ratio of the span to the depth. (8)
 421  421  421
www.grabthenew.com4 E 3042
  (ii) An I section beam 350 x 150 mm as shown in Fig.(3) has a web
thickness of 10 mm and a flange thickness of 20 mm. If the shear
force acting on the section is 40 kN, find the maximum shear stress
developed in the I section.   (8)
Fig (3)
15. (a) Two shafts of the same material and of same lengths are subjected to a
same torque, if the first shaft is of a solid circular section and the second
shaft is of hollow circular section, whose internal diameter is 2/3 of the
outside diameter and the maximum shear stress developed in each shaft
is the same, compare the weights of the shafts.
Or
(b) A closely coiled helical spring made of 10mm diameter steel wire has
15 coils of 100 mm mean diameter. The spring is subjected to an axial
load of 100 N. Calculate
  (i) The maximum shear stress induced
  (ii) The deflection
  (iii) Stiffness of spring. Take modulus of rigidity, C =
4 2
8.16×10 N/mm .
———————————

APPLIED GEOLOGY AG2211 PREVIOUS YEAR QUESTION PAPER | APRIL/MAY 2010 APPLIED GEOLOGY AG 2211 QUESTION PAPER



B.E./B.Tech. DEGREE EXAMINATION, APRIL/MAY 2010 
Third Semester 
Civil Engineering 
AG2211 — APPLIED GEOLOGY  
(Regulation 2008) 
Time: Three hours  Maximum: 100 Marks 
Answer ALL Questions 
PART A — (10 × 2 = 20 Marks) 
1. What is weathering of rocks? 
2. Explain Exfoliation.
3. Write a note on plane of symmetry of Quartz.
4. Write the Mohs Scale of hardness.
5. Distinguish between Granite and Marble rocks.
6. List two rock types of sedimentary and metamorphic group.
7. What are strike and dip of rocks?
8. Distinguish between seismic refraction and reflection methods.
9. Write a short note on vertical exaggeration.
10. What is grouting?
PART B — (5 × 16 = 80 Marks) 
11. (a) Describe the land forms produced by the geological work of river.
Or
(b) Explain in detail the process of physical and chemical weathering of
rocks and minerals.
12. (a) Describe the physical properties of minerals with examples.
Or
(b) What is coalification? Describe the types of coal and its properties.
13. (a) Describe the different types of rocks. Give the classification, texture and
structure of igneous rocks.
Or


(b) Explain in detail the various engineering properties of rocks.
14. (a) Discuss in details Electrical method of Investigation for groundwater
exploration.
Or
(b) What is a fault? Discuss various types of faults and  add a note on its
application in engineering projects.
15. (a) Explain various structural constraints which should be taken into
account during the construction of tunnel.
Or
(b) What are causes for landslide? What are the various parameters applied
to mitigate landslide?

IMPORTANT QUESTIONS IN ENGINEERING CHEMISTRY- I CY2111 SUBJECT FOR JAN JANUARY 2012 EXAMINATION AU ANNA UNIVERSITY,CHENNAI FOR FIRST YEAR FIRST SEMESTER STUDENTS COMMAN TO ALL TAMILNADU ENGINEERING COLLEGES AFFILIATED TO AU,CHENNAI


IMPORTANT QUESTIONS IN ENGINEERING CHEMISTRY- I CY2111 SUBJECT FOR JAN JANUARY 2012 EXAMINATION AU ANNA UNIVERSITY,CHENNAI  FOR FIRST YEAR FIRST SEMESTER STUDENTS COMMAN TO ALL TAMILNADU ENGINEERING COLLEGES AFFILIATED TO AU,CHENNAI


APPLICABLE TO CHENNAI,MADURAI,COIMBATORE,TRICHY,TRINELVELI AND ALL DISTRICT COLLEGES FIRST YEAR FIRST SEMESTER STUDENTS


CY2111 ENGINEERING CHEMISTRY- I
UNIT I
1.   Describe the principle and method involved in the determination of different types and amount of alkalinity of water
2.   Explain the following boiler troubles suggesting the remedial methods (a) Sludge and Scale formation (b) Caustic Embrittlement (c) Priming and Foaming
3.   100 ml of a water sample requires 20 ml of 0.01M EDTA for the titration with         EBTindicator. 100 ml of the same water sample after boiling and filtering required 10 ml of 0.01M EDTA. Calculate the total, carbonate and non carbonate hardness of the sample.
4.   Explain how demineralization of water is done in water technology?


UNIT II
1.   What are synthetic rubbers? Discuss the synthesis and uses of SBR & Butyl rubber   
2. How the following polymers are prepared (i) PVC (ii) Polyurethane (iii) Polycarbonate
3.   Explain the mechanism of addition polymerization.
4.   Write a brief account of FRP


UNIT III
1.   Explain the various types of  adsorption isotherms
2.   What are the factors that influence the adsorption of gases on solids? Discuss in detail
3.   Discuss the role of adsorbents in pollution abatement
4.   Explain the role of adsorbentsin catalysis




UNIT IV
1.   Explain the construction and working of H2-O2 fuel cell giving a neat diagram    2.   Briefly explain the components of a nuclear reactor?3.   Explain in detail about solar cells
4.   Discuss the light water nuclear reactor for power generation with a neat diagram


UNIT V
1.   What are abrasives? Explain the classification of abrasives with suitable examples
2.   Explain the electrical and mechanical properties and applications of carbon nanotubes
3.   What are the characteristics of  a good refractory? Write a note on Carborundum and Norbide.
4.   Define and signify (1) Flash and Fire point (2) Cloud and Pour Point

IMPORTANT QUESTIONS IN ENGINEERING PHYSICS I PH2111 SUBJECT FOR JAN JANUARY 2012 EXAMINATION AU ANNA UNIVERSITY,CHENNAI FOR FIRST YEAR FIRST SEMESTER STUDENTS COMMAN TO ALL TAMILNADU ENGINEERING COLLEGES AFFILIATED TO AU,CHENNAI


IMPORTANT QUESTIONS IN ENGINEERING PHYSICS I PH2111 SUBJECT FOR JAN JANUARY 2012 EXAMINATION AU ANNA UNIVERSITY,CHENNAI  FOR FIRST YEAR FIRST SEMESTER STUDENTS COMMAN TO ALL TAMILNADU ENGINEERING COLLEGES AFFILIATED TO AU,CHENNAI




APPLICABLE TO CHENNAI,MADURAI,COIMBATORE,TRICHY,TRINELVELI AND ALL DISTRICT COLLEGES FIRST YEAR FIRST SEMESTER STUDENTS

PH2111 - ENGINEERING PHYSICS I

UNIT I

1.    Explain the construction and working of  piezo electric generator to produce ultrasonic waves.
2.    Explain the construction and production of ultrasonic waves using magnetostriction method with neat diagram
3.    Discuss the pulse echo system to identify the flaws using ultrasonics with neat detailed diagram
4.    Describe the method of determining the velocity of ultrasonic waves using acoustic grating

UNIT II

1.    Explain the construction and working of He-Ne laser using a neat energy level diagram
2.    For atomic transitions, derive Einstein’s relations and hence deduce the expression for the ratio of spontaneous emission rate to the stimulated emission rate.
3.    Explain the modes of vibration of CO2 molecule.  Describe the construction and working of CO2 laser with necessary diagram.
4.    Explain the principle, construction and working of a semiconductor hetero junction laser with necessary diagrams. Mention any two advantages of them.

UNIT III




1.    Derive an expression for the numerical aperture and angle of acceptance of fiber in terms of refractive index of the core and cladding of the fiber.
2.    Describe the double –crucible technique for producing optical fibers
3.    Explain with a neat block diagram, the working of a fiber optical communication system
4.    Describe the principle , construction and working of light emitting diode

UNIT IV

1.    Discuss in details Compton Effect its experimental verification.
2.    Derive Planck’s law for black body radiation and hence deduce Wien’s law and Rayleigh Jean’s  law
3.    Explain the working of TEM and SEM with neat diagram
4.    Derive time independent Schrödinger wave equation and hence deduce time dependent Schrödinger wave equation

UNIT V

1.    Explain in detail about crystal defects with neat diagram
2.    Define the terms Atomic radius and packing factor.  Calculate the same for BCC and FCC structures.
3.    Explain in detail the crystal structures of Diamond, Graphite, Nacl and Zns.
4.    Derive an expression for the inter planar spacing for (hkl) planes of a cubic structures.