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USN C-
1OMAT31
(07 Marks)
(06 Marks)
(07 Marks)
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Third Semester B.E. Degree Examination, June/July 2013
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Find the Fourier cosine and sine transform of(x) : xe-ul, where a > 0.
constant.
4 a. Using method of leastol least souare. rt a
x I 2 3 4 5
v 0.5 2 4.5 8 t2.5
b.
[/!-^,-rr
c. Obtain the constant term and coefficients of first.cosine and sine terms in the expansion ofy
Ix, if 0<x<fl
b.FindthehalfrangeFouriersineserieso[f1x1=]
if f <x<r
lollowinp. table:
x 0 60" 120' 180: 240" 3000 3600
v '7.9 7.2 3.6 0.5 ''- 0r9 6.8 7.9
2 a. Find the Fourier transform of r(*l={u'-x'' lxl <a and hence deduce
| 0. lxl> a
b.
c.
3a.
b.
Find the inverse Fourier transform of e-s" .
Obtain the various possible solutions of one dimensional heat equation ut : c2 u,* by the
method of separation of variables. (07 Marks)
A tightly stretched string of length .[ with fixed ends is initially in equilibrium position. It is
/
set ro vibrate by giving each point a velocity U. talIf
.,J
. Find the displacement u(x. t).
(06 Marks)
c. Solve u*,. + uyy:0 given u(x,0) = 0, u(x, 1) - 0, u(1, y) = 0 and u(0, y) = u0, where u0 isa
(07 Marks)
(07 Marks) .
(06 Marks)
(07 Marks)
Time: 3 hrs. Max. Marks:100
Notel Answer FIVE full questions' selecting
ot least TlltO questions from each part.
PART - A
I x. if 0<x<n
I a. Obtain the Fourier series expansion ol i(x)={^ "' and hence deduce
[2r-x. il n<x<Ztr
Engineering Mathematics - Ill
n'l11thal
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8l'l-5'
x+y>4, x+3y>6
t
5a.
b.
1OMAT31
PART - B
Using Newton-Raphson method find a real root of x + logrox : 3.375 near 2.9, corrected to
3-decimal places. (07 Marks)
Solve the following system ofequations by relaxation method:
12x+y +z--31, 2x+8y-z=24, 3x+4y+102=58 (07 Marks)
Find the largest eigen value and corresponding eigen vector of following matrix A by power
method
A
us;x.01: tl,
....
a. In the giG;i*
o- teffn- Imd,
lzs t 21
=l , 3 o I
l, o -4]
0, 0]r as the initial eigen vector. (06 Marks)
below, the values ofy are conse
irst and tenth terms ofthe series.
x 5 '4 5 6 7 8 9
v 4.8 8.4 t4.5 23.6 36.2 52.8 73.9
an interpolating polynomial for the dataConstruct
difference formula.
consecutive terms ofseries of which 23.6 is the
ieries. .,.. .' :. . (07 Marks)
-fs] i:',-
given below using Newton's divided
(07 Marks)
I
c. Evaluate [.
j . a* by Weddte's rule taking 7-ordinates and hence find log.2. (06 Marks)
jl+x'or, ^
7 a. Solve the wave equation utt =.'{ux, subject.tq u(0, t) : 0; u(4, t) : 0; u(x, 0) : 0;
u(x, 0) : x(4 - x) by taking h i.l, k: 0.5 uptofour steps. (07 Marks)
^^)
b. Solve numerically the equation +=+ subjecttotheconditionsu(0,0:0:u(1,1),t>0
dl dx'
and u(x. 0) = sin nx.0 S x < l. Carryout compulations for two levels taking h - /, *d
k : /to . (07 Marks)
c. Solve the ellibtic eouation u*. + u,., = 0 for the followins souare mesh with houndarv vahresSolve the elliltic equation u*, + uyy = 0 for the following square mesh with boundary values
as showt,!!r'Fig.Q7(c). (06 Marks)
' u 5oo looo 5oo u
f-T t- r- l
,"""1 l', l.u 1,, 1,"^"
,*J--P]-lrf,o.,o Fig'Q7(c)
(07 Marks)
(07 Marks)
(06 Marks)
8 a. Find the z-transform of: i) sinhn0; ii) coshn0.
b. Obtain the inverse z-transform of
8z'
(22-1)(42-1)
c. Solve the following difference equation using z-transforms:
yn+zl2yn+t + yn: n with ye: yr :0
2 of2
USN
Third Semester B.E. Degree Examination, June/July 2013
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2a.
b.
3a.
b.
and shear stresses on an oblique plane are given by on - o cos2 0 and o,
0 : Angle made by oblique plane with the normal cross section of the bar.
Strength of Materials
Time: 3 hrs. Max. Marks:100
Notez Answer FIVEfull questions, selecting
ot leost TWO questions from each porl
PART _ A
I a. Brielly explain the behaviour ofductile material under gradually increasing tensile load.
(05 Marks)
b. Derive the relationship between modulus of rigidity and modulus of elasticity. (05 Marks)
c. A member ABCD is subjected to point loads Pr, Pz, P: and P4 as shown in Fig.Q1(c).
Calculate the force P2 necessary for equilibrium, if Pr : 45 kN, P3 : 450 kN and
P+ : 130 kN.-Determine the total elongation of the member, assuming the modulus of
elasticity to be 2.1 x 10s N/mm2. (10 Marks)
Fig.Ql(c)
Define: i) Modular ratio, ii) Volumetric strain. (04 Marks)
c.
A load of 2 MN is applied on a column 500 mm x 500 mm. The column is reinforced with
lbur steel bars of l0 mm diameter. one in each comer. Find the stresses in the concrete and
steel bars. Take "E" for steel as 2. I x 105 N/mm2 and ftir concrete as 1 .4 x 104 N/mrn2.
(08 Marks)
A steel rod of 20 mm diameter passes centrally through a copper tube of 50 mm external
diameter and 40 mm internal diameter. The tube is closed at each end by rigid plates of
negligible thickness. The nuts are tightened lightly home on the protecting pans ofthe rod.
It the temperature oI the assembly is raised by 50"C. calculate rhe srresses developed in
copper and steel. Take E lbr steel and copper as 200 GN/m2 and 100 N/m2 and a for steel
and copper as 12 x 10-6/nC and 18 x 10-6fC. (08 Marks)
Define: i) Principal planes, ii) Principal stresses. (04 Marks)
A rectangular bar is subjected to a direct stress (o) in one plane only. Prove that the normal
lOCV/EV33
= 9sin 20.
t
(06 Marks)
615 nnl
c. Two wooden pieces 100 mm x 100 mm in cross section are glued together along line AB as
rI


4a.
b.
Define: i) Shear force, ii) Bending moment.
Tluough sketch list the imporlant tlpe of beams.
Fig.Q4(c) shown the shear force diagram for a simply supporled beam.
pattem and also draw the bending moment diagram.
t
Fig.Qa(c)
PART _ B
Define: i) Neutral axis, ii) Section modulus, iii) Moment of resistance.
beam.
Define: Torsional rigidity, ii) Polar moment of inertia.
10cv/EV33
(04 Marks)
(05 Marks)
Obtain the loading
(l I Marks)
(06 Marks)
(06 Marks)
(0,1 Marks)
5a.
b.
c.
6a.
b.
c.
Calculate the maximum bending stress induced in a cast iron pipe of external diameter
40 mm, internal diameter 20 mm and of length 4 metre when the pipe is simply supported at
its ends and carries a point load of80 N at its centre. (06 Marks)
A beam is simply supported and carries a uniformly distributed load of 40 kN/m over the
entire span. The section ofthe beam is rectangular- having depth as 500 mm. Ifthe maximum
stress in the material of the beam is 120 N/mm2 and moment of inertia of the section is
7 x 108 mma, find the span of the beam. (08 Marks)
Define: i) Deflection, ii) Elastic curve. (04 Marks)
Derive an expression for the slope and deflection of a simply supported beam carrying a
point load at the centre. (10 Marks)
A beam 3m long, simply supported at its ends, is canying a point load "W" at the centre. If
the slope at the €nds ofthe beam should not exceed 1o, find the deflection at the centre ofthe
7a.
b. For: a circular shaft subjected to torsion, derive the relationship between the torque
transmitted and shear stress induced in the shaft. (06 Marks)
A hollow circular shaft is to transmit 300 kW power at 80 rpm. If the shear stress is not to
exceed 60 N/mm2 and the intemal diameter is 0.6 of the external diameter, find the external
and internal diameter assuming that the maximum torque is 1.4 times the mean. (10 Marks)
a.
b.
Differentiate between long and short columns.
Using Euler's theory, derive an equation for the crippling load of a long column pinned at
(04 Marks)
both ends. (06 Marks)
c. A simply supported beam of length 4 metre is subjected to a uniformly distributed load of
30 kN/mt over the whole span and deflects 15 mm at the centre. Determine the crippling
load when this beam is used as a column with both the ends hinged.
2 of2
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(10 Marks)
USN 10cv/xv34
Third Semester B.E. Degree Examination, June/July 2013
f
Time: 3 hrs. Max. Ma.ks:16b'
Note: l. .4asw er FI VE fulI q uesti on s, sel ectin g:-
E I 2. Assume missing data suitably. ii..
_9
-E PART - Arn < F r : ,.fi
i r'- rAl( I - A
I a. Explaini[e.classification of surr"y.- (0E Marks)
b. Explain theifrsic principles of surveying. . r,.il (06 Marks)
^ II,L^. :- D- ':,r- :! o r , .) ) "
E9 c. What is Ran'gi$? Explain indirect method of ranging
^ '.
' (06 Marks)
8=
E 3 2 a. List the different tapo corrections. Explain and give expressions for tape corrections.
-sXe- , (10 Marks)
H? b. A 30 m chain was tesied;before measurement of $!..1day's work and fbund to be correct.
E
A. A^fter measuring 3000 m. the chain, was found to be 5 cm loo long. At the end ofday's work
f g after measuring.
_5400
rn the chain was four{ lo be I 0 cm too long. What was the true
i.C distance chained? (06 Marks)
i i c. A rectangular plot was measured with a 20 m chain which was 12 cm too long. The area
g E obrained was I 17600 m'z. Find the .1q&6da of plot. (04 Marks)
;E
E f' 3 a. With neat sketches. explain obstacles in chainihg. (08 Markslb d J a. wlth neat sketches, explain obrtbtles in chai4iiiil. (08 Marks)
E S b. Witl a near diagram" .*plain tt" *ort ing oiun iprUf ,qu*.. (07 Marks)
E" I c. A chain line ABC crosses a river. B and C being on_the near and distant banks respectively.
; E The respecrive bearings ofc and A taken at o. I p"iri+l rnrn.;r;;;'; right angres to AB
€ € from B are 300o and 210". The tength of AB is 24 m. Find rhe width of the river. (os wru.r,g
->ii6'!q
i; 4 a. Define the terms true bearing. magnetic bearing, whole ci(le bearing and quadrantal
F F bearurg. (04 Marks)
I ; b. The
-lo !!sw lnL-inq
bearings were observal with a gompass. Calculate the intrior angles.?, i D. rne rox{wmg Dearmgs were observal wrth a gompass. Calculate the inbrior angles.
.f E lline I es lffi '/=
gE
=
i / (t o Marks)
1: c. On an old map" a line was drawn to a masnetic hearinq nf 'l?oo?o, rvhen tha .la.'Ji.,ti^. .,,."
3 E (tu rylarks)
aF" c. O^n an old map. a line was drawn to a magnetic bearing of 320"30' when the deo{ination was
E -g
3"30' w. Find the present bearing of the line if rhe declination is 4" I5, E. ioo nrrarrrs;
F; PART- BI ; PAR'I: > LN_P /-A'7-- ^r,
6 € 5 a. What is meant by local anraction? How is it detected? i::7
'.r
:-' (06
: > LN_P /-A'7-- ^r,
6 € 5 a. What is meant by local attraction? How is it detected? f -*7 '..
io (06 Mar6
-j .i b. Explain dependant and independenr coordinates. lii[ ".
, , 'i .j iol ur.L.i
.3 c. Following are the observed bearings ofa closed traverse:
Z lti^^l Dn I nn I M-----T-----;;-----
folk&ing bearings were observal with a compass. Calculate
Liie" AB BC CD DE EA
,Frire bearing 60" 30' 122'0' 460 0' 2050 30' 300" 0,
are the obseryed ofa closed
Line PQ QR RS SP
F.B 124'30' 680 15', 3100 30' 200'15'
B.B 304'30' 2460 0' 1350 I 5' 170 45',
At what station local attraction was suspected. Determine the correct bearings ofthe lines.
(10 Marks)
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1of 2
6a.
b.
Define the terms: level surface, bench mark, reduced level, back sight.
Explain the temporary adjustments of dumpy level.
10cv/Ev34
(04 Marks)
(06 Marks)
..'-l (08 Marks)
'-L
'"
wo rYrar lrs,,
Efpfih;he characteristics of contours. *
t* ''
(07 Marks)
*"ffi10, orientation? Explain any one method of orientatio.o. (05 Marks)
'td -
Write short nb(/spgany roun: .*Tt"Traversing "-
 {,/
anote on profile leveling and cross sectioning.
- +L^ ^L^-^^+^*:-+:^- ^f ^^-+^,,--he characteristics of contours.
a.
b.
c.
d.
e.
f
'rd z
Write short nl(/spgany rOUR: .,.rt"Traversing Ll() .- {,/
Grade con-tour ucr"
-
a3'
Curvature and,refractlo?4- t+,
Classification of maps andtfuir numbering
Precision and accuracy tll* d]
Profile leveling. "oa{:.
#- (20Marks)
L'/d-uiot
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/"l h
-,'x/ {* )d-,
r;! :*r
...;
/ I
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v^
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2 of2
USN r0cv35
Max. Marks:100
Third Semester B.E. Degree Examination, June/July 2013
Fluid Mechanics
Time: 3 hrs.
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2a.
b.
la.
b.
c.
c.
3a.
b.
Note: 1. Answer FIVE full questions, selecting
at leost TWO questions from each part.
2. Assume missing data if any.
PART-A
Write units of i)Surface tension; ii) Dynamic viscosity; iii) Power; iv.) Momentum and
v) Pressure. (05 Marks)
Illustrate capillary rise and drop with appropriate sketches clearly indicating the fluids
involved in each case. (05 Marks)
A thin plate is placed between two flat surfaces 'h' cm apart such that the viscosity of the
liquids on the top and bottom ofthe plate are pl and p2 respectively. Determine the position
of the thin plate such that'the viscous resistanse to uniform motion of the thin plate is
minimum. Assume 'h' to be very small. (10 Marks)
Derive equation for hydrostatic law of.pressure variation. (08 Marks)
If mercury barometer reads 700mm and Bourdon gauge at a point in a flow system reads
500 kN/m2, what is the absolute pressure al the poini? (04 Marks)
Fig.Q.2(c) shows a glass funnel fitted to a U tube-manometer. The manometer reading is
0.25m when the tunnel is empty what is the manometer reading when the tLrnnel is
completely fitted with water? Take funnel height = 2lir. (08 Marks)
Fig.e.2rcr
Prove that for a plate submerged in horizontal position in water the centre of pressure is
same as centroid ofthe plate. (10 Marks)
Fig.Q.3(b) shows a rectangular flash board AB which is 4.5m high and is pivoted at C. What
must be the maximum height ofc above B so that the flash board will be on the verge of
tipping when water surface is at A? Also determine if the pivot of the flash board is at a
height h : 1.5m, the reactions at B and C when the water surface is 4m above B. (10 Marks)
1of3
4
5
10cv35
'
. ,,,, l1g.Q.J(b)
a. In a ffoy..!!e velocity vector is given by V = 3x i +4y j-72k. Determine the equation of
the streainliiie passing though a point M(1, 4, 5). ^ (10 Marks)
b. The velocity p&ltial Q for a two dimensional flow is givert'ttiii'z- y) + 3xy. Calcuiate:
i) the stream fuidtlo! V *a ii) the flow rate passing between the stream lines through ( 1 ,
(10 Marks)l)and(1.2).
..., PART_B
a. Fig.Q.5(a) shows nozzle at itielgnd of a pipe 1in'6 discharging oil fiom a tank to atmosphere.
Estimate the discharge from thqiiozzle when'&e head 'H' in the tank is 4m. The loss in the
pipe can be taken as 20 y2l2g, where 1V' is thrj velocity in the pipe. The loss of energy in the
rozzle canbe assumed to be zero. Alsd, determine the pressure at the base ofthe nozzle.
(10 Marks)
1
25 mm Dia
f, .-
I'
Fig.Q.s(a)
b. 250 LPS of,$'ater is flowing in a pipe having a diameter of 300mm. If the pipe is bent by
135". Fiff{'the magnitude and direction ofthe resultant force on the bend. The pressure of
the wriiiili flowing is 400 kN/m2. Take specific weight of water as 9.81 kN/m3. Refer
" .... (10 Marks)FigQ.s(b). v1
. rrx
Y
l__,,m mn di.-
Fig.Q.5(b)
Fie.Q.3(b)
o='l.s)l
I ,oo ,, o" p,p".
i._1.
2 of3
6a.
10cv3s
The following data were collected for a stream at a gauging station. compute the discharge
s. A pitot tube is mounted on an airplane to indicate the speed of the plane relative to the
prevailing wind. What differential pressure intensity in kPa will the instrument register when
the plane is traveling at a speed of 200km/hr in a wind of 60 km/hr blowing against the
direction of the plane? eui. : 1.2 kg/m3. (06 Marks)
7 a. A pipe line of 600mm diametet is I .5 km long. To increase the discharge another line of the
same diameter is introduced parallel to the first in the second half ofthe length (Fig.e.7(a).
If the friction factor is 0.04 and the head at the inlet is 0.3m, calculate ihe lncrease in
tlllougtr the stream. Rating equation of current meter V : 0.3N + 0.05, N = revolutions per
second. Marks)V : velocitv in m/s. l0
Distance from one
end of water surface (m)
Water depth 'd' (m) Curent meter immersion at
0.6 d 0.2.d 0.8 d
Rev. S Rev. S Rev. S
3 1.4 12 50
6 3.3 38 52 23 55
9 5.0 40 58 30 54
12 9.0 48 60 34 58
15 5.4 34 52 30 50
18 3.8 35 52 30 54
21 1.8 l8 50
b. Compare manual and self recording depth gauges. (04 Marks)
discharge. (10 MarLs)
b.
r4-'an'Iel-v'uu
The velocity of water in a 60cm diameter and 15mm thick cast irqn pipe (E : 1.04 x 10rr pa)
is changed from 3 m/s to zero in 1.25 s by closure ofa valve i) ifthe pipe length is g0bm
what will be the water hammer pressure at the valve? what will be the coirespondirg
pressure rise ifthe closure takes place in; ii) 2 s and iii) 0.gs respectively? Bulk module of
8 a. It is required to establish the thoat diameter of a venturimeter in an installation of 100mm
diameter pipe conveying water. The maximum range available in mercury-water differential
manometer gauge is 50cm of mercury deflection. Find the maximum throat diameter which
will indicate the fill gauge deflection when the flow rate is 20 LPs assuming coefficient of
elasticity of water is 2.11 x 10e N/m2. (10 Marks)
venturimeter as 0.984. (10 Marks)
b. A discharge of 0.06 ml/s was measured over a right angled notch. while measuring the head
over the notch an error of 1.5mm was made. Determine the eror in discharge if
the coefficient ofdischarge for the notch is 0.6. '.iu
t L-: r}.i :r.
^t.;
., i.']' I
3 of3
(10 Marks)
IJSN
Time: 3 hrs.
10cv36
of mineralogy,
(08 Marks)
(06 Marks)
note on contact
(06 Marks)
(06 Marks)
(10 Marks)
(05 Marks)
(05 Marks)
(05 Marks)
(05 Marks)
(10 Marks)
Third Semester B.E. Degree Examination, June/July 2013
4a.
b.
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Applied Engineering Geology
Note: Answer FIVE full questions, selecting
atleasl TWO questions from each part
Max. Marks:100
PART-A
I a. Briefly describe the zonal structure of the earth and add a note on its density and
composition. (06 Marks)
b. Describe the property ofcleavage and hardness in minerals. (06 Marks)
c. With the aid of physical properties, chemistry and uses, distigusih between
i) Quartz and calcite ii) Chalcopyrite and orthoclase. (0E Marks)
2 a. What are Igneous rocks? How are they classified? Give a brief account
texture and mode of occurrence ofthe fi2llowing igneous rocks
. i) Dunire ii) pegmatire iii) Basah.
D. Write short notes on corrent bedding.
c. What is metamorphism? Mention the types of metamorphism and add a
metamorph ism.
-a what is wreathering? write a note on mechanical wearhering by thermal effect. (06 Marks)
b. what are rivers? Describe the geological action of rivers and add a note on meandering oi
rivers. (oE Marks)
c. What is a soil and soil profile? Describe the various methods ofconservarion ofsoil erosion.
What are earthquakes? Descrite tectonic course of earthquakes.
Write a note on causes of land slides.
PART-B
c. Write a brief note on costal land forms.
5 a. What are Auits? How are they distinguished from joints and give.a brief account ofnormal
and reverse faults?
b. Write ihort notes on recumbent and isoclinal fold. ,, ,r:., . [;:ffi:[]
6 Explain:
a. Tunneling a cross lolded rocks.
b. Dam tundations
""
f"il;i;;;;.
(o? Marks)
c. Siltingofreservoir.
rueurueKs'
ffiil::I3
a. What is a water fable? And add a note on parched water table.
b. What are aquifers? Write a note on confined aquifer.
c. Explain the electrical resistivity method for exploration of ground water.
Write a short notes on following :
a. Application ofremote sensing in civil engineering
b. Impact of mining on environment
c. GPS
d. GIS. (20 Marks)

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3rd semester Civil Engineering ( 2013-June) Question Papers

  • 1. l' 1 USN C- 1OMAT31 (07 Marks) (06 Marks) (07 Marks) .SlnX-XCOSX 1I l-o*= ' ;x+ (07 Marks) (06 Marks) (07 Marks) Third Semester B.E. Degree Examination, June/July 2013 o E Yor tg -=i o- 6- oi 6.!l ooo 'b= a8 -i ti o z E Ix, if,0 I -^ [r-x, tl ') irom the Find the Fourier cosine and sine transform of(x) : xe-ul, where a > 0. constant. 4 a. Using method of leastol least souare. rt a x I 2 3 4 5 v 0.5 2 4.5 8 t2.5 b. [/!-^,-rr c. Obtain the constant term and coefficients of first.cosine and sine terms in the expansion ofy Ix, if 0<x<fl b.FindthehalfrangeFouriersineserieso[f1x1=] if f <x<r lollowinp. table: x 0 60" 120' 180: 240" 3000 3600 v '7.9 7.2 3.6 0.5 ''- 0r9 6.8 7.9 2 a. Find the Fourier transform of r(*l={u'-x'' lxl <a and hence deduce | 0. lxl> a b. c. 3a. b. Find the inverse Fourier transform of e-s" . Obtain the various possible solutions of one dimensional heat equation ut : c2 u,* by the method of separation of variables. (07 Marks) A tightly stretched string of length .[ with fixed ends is initially in equilibrium position. It is / set ro vibrate by giving each point a velocity U. talIf .,J . Find the displacement u(x. t). (06 Marks) c. Solve u*,. + uyy:0 given u(x,0) = 0, u(x, 1) - 0, u(1, y) = 0 and u(0, y) = u0, where u0 isa (07 Marks) (07 Marks) . (06 Marks) (07 Marks) Time: 3 hrs. Max. Marks:100 Notel Answer FIVE full questions' selecting ot least TlltO questions from each part. PART - A I x. if 0<x<n I a. Obtain the Fourier series expansion ol i(x)={^ "' and hence deduce [2r-x. il n<x<Ztr Engineering Mathematics - Ill n'l11thal -= . *... * . *......... 8l'l-5' x+y>4, x+3y>6
  • 2. t 5a. b. 1OMAT31 PART - B Using Newton-Raphson method find a real root of x + logrox : 3.375 near 2.9, corrected to 3-decimal places. (07 Marks) Solve the following system ofequations by relaxation method: 12x+y +z--31, 2x+8y-z=24, 3x+4y+102=58 (07 Marks) Find the largest eigen value and corresponding eigen vector of following matrix A by power method A us;x.01: tl, .... a. In the giG;i* o- teffn- Imd, lzs t 21 =l , 3 o I l, o -4] 0, 0]r as the initial eigen vector. (06 Marks) below, the values ofy are conse irst and tenth terms ofthe series. x 5 '4 5 6 7 8 9 v 4.8 8.4 t4.5 23.6 36.2 52.8 73.9 an interpolating polynomial for the dataConstruct difference formula. consecutive terms ofseries of which 23.6 is the ieries. .,.. .' :. . (07 Marks) -fs] i:',- given below using Newton's divided (07 Marks) I c. Evaluate [. j . a* by Weddte's rule taking 7-ordinates and hence find log.2. (06 Marks) jl+x'or, ^ 7 a. Solve the wave equation utt =.'{ux, subject.tq u(0, t) : 0; u(4, t) : 0; u(x, 0) : 0; u(x, 0) : x(4 - x) by taking h i.l, k: 0.5 uptofour steps. (07 Marks) ^^) b. Solve numerically the equation +=+ subjecttotheconditionsu(0,0:0:u(1,1),t>0 dl dx' and u(x. 0) = sin nx.0 S x < l. Carryout compulations for two levels taking h - /, *d k : /to . (07 Marks) c. Solve the ellibtic eouation u*. + u,., = 0 for the followins souare mesh with houndarv vahresSolve the elliltic equation u*, + uyy = 0 for the following square mesh with boundary values as showt,!!r'Fig.Q7(c). (06 Marks) ' u 5oo looo 5oo u f-T t- r- l ,"""1 l', l.u 1,, 1,"^" ,*J--P]-lrf,o.,o Fig'Q7(c) (07 Marks) (07 Marks) (06 Marks) 8 a. Find the z-transform of: i) sinhn0; ii) coshn0. b. Obtain the inverse z-transform of 8z' (22-1)(42-1) c. Solve the following difference equation using z-transforms: yn+zl2yn+t + yn: n with ye: yr :0 2 of2
  • 3. USN Third Semester B.E. Degree Examination, June/July 2013 = :r, ; Y{J ;i FO- 6no U< .-i ; E 2a. b. 3a. b. and shear stresses on an oblique plane are given by on - o cos2 0 and o, 0 : Angle made by oblique plane with the normal cross section of the bar. Strength of Materials Time: 3 hrs. Max. Marks:100 Notez Answer FIVEfull questions, selecting ot leost TWO questions from each porl PART _ A I a. Brielly explain the behaviour ofductile material under gradually increasing tensile load. (05 Marks) b. Derive the relationship between modulus of rigidity and modulus of elasticity. (05 Marks) c. A member ABCD is subjected to point loads Pr, Pz, P: and P4 as shown in Fig.Q1(c). Calculate the force P2 necessary for equilibrium, if Pr : 45 kN, P3 : 450 kN and P+ : 130 kN.-Determine the total elongation of the member, assuming the modulus of elasticity to be 2.1 x 10s N/mm2. (10 Marks) Fig.Ql(c) Define: i) Modular ratio, ii) Volumetric strain. (04 Marks) c. A load of 2 MN is applied on a column 500 mm x 500 mm. The column is reinforced with lbur steel bars of l0 mm diameter. one in each comer. Find the stresses in the concrete and steel bars. Take "E" for steel as 2. I x 105 N/mm2 and ftir concrete as 1 .4 x 104 N/mrn2. (08 Marks) A steel rod of 20 mm diameter passes centrally through a copper tube of 50 mm external diameter and 40 mm internal diameter. The tube is closed at each end by rigid plates of negligible thickness. The nuts are tightened lightly home on the protecting pans ofthe rod. It the temperature oI the assembly is raised by 50"C. calculate rhe srresses developed in copper and steel. Take E lbr steel and copper as 200 GN/m2 and 100 N/m2 and a for steel and copper as 12 x 10-6/nC and 18 x 10-6fC. (08 Marks) Define: i) Principal planes, ii) Principal stresses. (04 Marks) A rectangular bar is subjected to a direct stress (o) in one plane only. Prove that the normal lOCV/EV33 = 9sin 20. t (06 Marks) 615 nnl c. Two wooden pieces 100 mm x 100 mm in cross section are glued together along line AB as
  • 4. rI 4a. b. Define: i) Shear force, ii) Bending moment. Tluough sketch list the imporlant tlpe of beams. Fig.Q4(c) shown the shear force diagram for a simply supporled beam. pattem and also draw the bending moment diagram. t Fig.Qa(c) PART _ B Define: i) Neutral axis, ii) Section modulus, iii) Moment of resistance. beam. Define: Torsional rigidity, ii) Polar moment of inertia. 10cv/EV33 (04 Marks) (05 Marks) Obtain the loading (l I Marks) (06 Marks) (06 Marks) (0,1 Marks) 5a. b. c. 6a. b. c. Calculate the maximum bending stress induced in a cast iron pipe of external diameter 40 mm, internal diameter 20 mm and of length 4 metre when the pipe is simply supported at its ends and carries a point load of80 N at its centre. (06 Marks) A beam is simply supported and carries a uniformly distributed load of 40 kN/m over the entire span. The section ofthe beam is rectangular- having depth as 500 mm. Ifthe maximum stress in the material of the beam is 120 N/mm2 and moment of inertia of the section is 7 x 108 mma, find the span of the beam. (08 Marks) Define: i) Deflection, ii) Elastic curve. (04 Marks) Derive an expression for the slope and deflection of a simply supported beam carrying a point load at the centre. (10 Marks) A beam 3m long, simply supported at its ends, is canying a point load "W" at the centre. If the slope at the €nds ofthe beam should not exceed 1o, find the deflection at the centre ofthe 7a. b. For: a circular shaft subjected to torsion, derive the relationship between the torque transmitted and shear stress induced in the shaft. (06 Marks) A hollow circular shaft is to transmit 300 kW power at 80 rpm. If the shear stress is not to exceed 60 N/mm2 and the intemal diameter is 0.6 of the external diameter, find the external and internal diameter assuming that the maximum torque is 1.4 times the mean. (10 Marks) a. b. Differentiate between long and short columns. Using Euler's theory, derive an equation for the crippling load of a long column pinned at (04 Marks) both ends. (06 Marks) c. A simply supported beam of length 4 metre is subjected to a uniformly distributed load of 30 kN/mt over the whole span and deflects 15 mm at the centre. Determine the crippling load when this beam is used as a column with both the ends hinged. 2 of2 , t,g (10 Marks)
  • 5. USN 10cv/xv34 Third Semester B.E. Degree Examination, June/July 2013 f Time: 3 hrs. Max. Ma.ks:16b' Note: l. .4asw er FI VE fulI q uesti on s, sel ectin g:- E I 2. Assume missing data suitably. ii.. _9 -E PART - Arn < F r : ,.fi i r'- rAl( I - A I a. Explaini[e.classification of surr"y.- (0E Marks) b. Explain theifrsic principles of surveying. . r,.il (06 Marks) ^ II,L^. :- D- ':,r- :! o r , .) ) " E9 c. What is Ran'gi$? Explain indirect method of ranging ^ '. ' (06 Marks) 8= E 3 2 a. List the different tapo corrections. Explain and give expressions for tape corrections. -sXe- , (10 Marks) H? b. A 30 m chain was tesied;before measurement of $!..1day's work and fbund to be correct. E A. A^fter measuring 3000 m. the chain, was found to be 5 cm loo long. At the end ofday's work f g after measuring. _5400 rn the chain was four{ lo be I 0 cm too long. What was the true i.C distance chained? (06 Marks) i i c. A rectangular plot was measured with a 20 m chain which was 12 cm too long. The area g E obrained was I 17600 m'z. Find the .1q&6da of plot. (04 Marks) ;E E f' 3 a. With neat sketches. explain obstacles in chainihg. (08 Markslb d J a. wlth neat sketches, explain obrtbtles in chai4iiiil. (08 Marks) E S b. Witl a near diagram" .*plain tt" *ort ing oiun iprUf ,qu*.. (07 Marks) E" I c. A chain line ABC crosses a river. B and C being on_the near and distant banks respectively. ; E The respecrive bearings ofc and A taken at o. I p"iri+l rnrn.;r;;;'; right angres to AB € € from B are 300o and 210". The tength of AB is 24 m. Find rhe width of the river. (os wru.r,g ->ii6'!q i; 4 a. Define the terms true bearing. magnetic bearing, whole ci(le bearing and quadrantal F F bearurg. (04 Marks) I ; b. The -lo !!sw lnL-inq bearings were observal with a gompass. Calculate the intrior angles.?, i D. rne rox{wmg Dearmgs were observal wrth a gompass. Calculate the inbrior angles. .f E lline I es lffi '/= gE = i / (t o Marks) 1: c. On an old map" a line was drawn to a masnetic hearinq nf 'l?oo?o, rvhen tha .la.'Ji.,ti^. .,,." 3 E (tu rylarks) aF" c. O^n an old map. a line was drawn to a magnetic bearing of 320"30' when the deo{ination was E -g 3"30' w. Find the present bearing of the line if rhe declination is 4" I5, E. ioo nrrarrrs; F; PART- BI ; PAR'I: > LN_P /-A'7-- ^r, 6 € 5 a. What is meant by local anraction? How is it detected? i::7 '.r :-' (06 : > LN_P /-A'7-- ^r, 6 € 5 a. What is meant by local attraction? How is it detected? f -*7 '.. io (06 Mar6 -j .i b. Explain dependant and independenr coordinates. lii[ ". , , 'i .j iol ur.L.i .3 c. Following are the observed bearings ofa closed traverse: Z lti^^l Dn I nn I M-----T-----;;----- folk&ing bearings were observal with a compass. Calculate Liie" AB BC CD DE EA ,Frire bearing 60" 30' 122'0' 460 0' 2050 30' 300" 0, are the obseryed ofa closed Line PQ QR RS SP F.B 124'30' 680 15', 3100 30' 200'15' B.B 304'30' 2460 0' 1350 I 5' 170 45', At what station local attraction was suspected. Determine the correct bearings ofthe lines. (10 Marks) o E 1of 2
  • 6. 6a. b. Define the terms: level surface, bench mark, reduced level, back sight. Explain the temporary adjustments of dumpy level. 10cv/Ev34 (04 Marks) (06 Marks) ..'-l (08 Marks) '-L '" wo rYrar lrs,, Efpfih;he characteristics of contours. * t* '' (07 Marks) *"ffi10, orientation? Explain any one method of orientatio.o. (05 Marks) 'td - Write short nb(/spgany roun: .*Tt"Traversing "- {,/ anote on profile leveling and cross sectioning. - +L^ ^L^-^^+^*:-+:^- ^f ^^-+^,,--he characteristics of contours. a. b. c. d. e. f 'rd z Write short nl(/spgany rOUR: .,.rt"Traversing Ll() .- {,/ Grade con-tour ucr" - a3' Curvature and,refractlo?4- t+, Classification of maps andtfuir numbering Precision and accuracy tll* d] Profile leveling. "oa{:. #- (20Marks) L'/d-uiot {'1p *,*'x * /"l h -,'x/ {* )d-, r;! :*r ...; / I /.,s v^ J. -,.' wc-i' ',jd:l .-9 Y*; ! ^, , r,-- }{ !',' -r* xttrl.-l .{*' 2 of2
  • 7. USN r0cv35 Max. Marks:100 Third Semester B.E. Degree Examination, June/July 2013 Fluid Mechanics Time: 3 hrs. q ;= -..i .E. -a 6E U< o z E 2a. b. la. b. c. c. 3a. b. Note: 1. Answer FIVE full questions, selecting at leost TWO questions from each part. 2. Assume missing data if any. PART-A Write units of i)Surface tension; ii) Dynamic viscosity; iii) Power; iv.) Momentum and v) Pressure. (05 Marks) Illustrate capillary rise and drop with appropriate sketches clearly indicating the fluids involved in each case. (05 Marks) A thin plate is placed between two flat surfaces 'h' cm apart such that the viscosity of the liquids on the top and bottom ofthe plate are pl and p2 respectively. Determine the position of the thin plate such that'the viscous resistanse to uniform motion of the thin plate is minimum. Assume 'h' to be very small. (10 Marks) Derive equation for hydrostatic law of.pressure variation. (08 Marks) If mercury barometer reads 700mm and Bourdon gauge at a point in a flow system reads 500 kN/m2, what is the absolute pressure al the poini? (04 Marks) Fig.Q.2(c) shows a glass funnel fitted to a U tube-manometer. The manometer reading is 0.25m when the tunnel is empty what is the manometer reading when the tLrnnel is completely fitted with water? Take funnel height = 2lir. (08 Marks) Fig.e.2rcr Prove that for a plate submerged in horizontal position in water the centre of pressure is same as centroid ofthe plate. (10 Marks) Fig.Q.3(b) shows a rectangular flash board AB which is 4.5m high and is pivoted at C. What must be the maximum height ofc above B so that the flash board will be on the verge of tipping when water surface is at A? Also determine if the pivot of the flash board is at a height h : 1.5m, the reactions at B and C when the water surface is 4m above B. (10 Marks) 1of3
  • 8. 4 5 10cv35 ' . ,,,, l1g.Q.J(b) a. In a ffoy..!!e velocity vector is given by V = 3x i +4y j-72k. Determine the equation of the streainliiie passing though a point M(1, 4, 5). ^ (10 Marks) b. The velocity p&ltial Q for a two dimensional flow is givert'ttiii'z- y) + 3xy. Calcuiate: i) the stream fuidtlo! V *a ii) the flow rate passing between the stream lines through ( 1 , (10 Marks)l)and(1.2). ..., PART_B a. Fig.Q.5(a) shows nozzle at itielgnd of a pipe 1in'6 discharging oil fiom a tank to atmosphere. Estimate the discharge from thqiiozzle when'&e head 'H' in the tank is 4m. The loss in the pipe can be taken as 20 y2l2g, where 1V' is thrj velocity in the pipe. The loss of energy in the rozzle canbe assumed to be zero. Alsd, determine the pressure at the base ofthe nozzle. (10 Marks) 1 25 mm Dia f, .- I' Fig.Q.s(a) b. 250 LPS of,$'ater is flowing in a pipe having a diameter of 300mm. If the pipe is bent by 135". Fiff{'the magnitude and direction ofthe resultant force on the bend. The pressure of the wriiiili flowing is 400 kN/m2. Take specific weight of water as 9.81 kN/m3. Refer " .... (10 Marks)FigQ.s(b). v1 . rrx Y l__,,m mn di.- Fig.Q.5(b) Fie.Q.3(b) o='l.s)l I ,oo ,, o" p,p". i._1. 2 of3
  • 9. 6a. 10cv3s The following data were collected for a stream at a gauging station. compute the discharge s. A pitot tube is mounted on an airplane to indicate the speed of the plane relative to the prevailing wind. What differential pressure intensity in kPa will the instrument register when the plane is traveling at a speed of 200km/hr in a wind of 60 km/hr blowing against the direction of the plane? eui. : 1.2 kg/m3. (06 Marks) 7 a. A pipe line of 600mm diametet is I .5 km long. To increase the discharge another line of the same diameter is introduced parallel to the first in the second half ofthe length (Fig.e.7(a). If the friction factor is 0.04 and the head at the inlet is 0.3m, calculate ihe lncrease in tlllougtr the stream. Rating equation of current meter V : 0.3N + 0.05, N = revolutions per second. Marks)V : velocitv in m/s. l0 Distance from one end of water surface (m) Water depth 'd' (m) Curent meter immersion at 0.6 d 0.2.d 0.8 d Rev. S Rev. S Rev. S 3 1.4 12 50 6 3.3 38 52 23 55 9 5.0 40 58 30 54 12 9.0 48 60 34 58 15 5.4 34 52 30 50 18 3.8 35 52 30 54 21 1.8 l8 50 b. Compare manual and self recording depth gauges. (04 Marks) discharge. (10 MarLs) b. r4-'an'Iel-v'uu The velocity of water in a 60cm diameter and 15mm thick cast irqn pipe (E : 1.04 x 10rr pa) is changed from 3 m/s to zero in 1.25 s by closure ofa valve i) ifthe pipe length is g0bm what will be the water hammer pressure at the valve? what will be the coirespondirg pressure rise ifthe closure takes place in; ii) 2 s and iii) 0.gs respectively? Bulk module of 8 a. It is required to establish the thoat diameter of a venturimeter in an installation of 100mm diameter pipe conveying water. The maximum range available in mercury-water differential manometer gauge is 50cm of mercury deflection. Find the maximum throat diameter which will indicate the fill gauge deflection when the flow rate is 20 LPs assuming coefficient of elasticity of water is 2.11 x 10e N/m2. (10 Marks) venturimeter as 0.984. (10 Marks) b. A discharge of 0.06 ml/s was measured over a right angled notch. while measuring the head over the notch an error of 1.5mm was made. Determine the eror in discharge if the coefficient ofdischarge for the notch is 0.6. '.iu t L-: r}.i :r. ^t.; ., i.']' I 3 of3 (10 Marks)
  • 10. IJSN Time: 3 hrs. 10cv36 of mineralogy, (08 Marks) (06 Marks) note on contact (06 Marks) (06 Marks) (10 Marks) (05 Marks) (05 Marks) (05 Marks) (05 Marks) (10 Marks) Third Semester B.E. Degree Examination, June/July 2013 4a. b. o. E :h -.It ES .96 nr'ia ESo-a 0J :; e.Y a3 U< -: ..i a z o E Applied Engineering Geology Note: Answer FIVE full questions, selecting atleasl TWO questions from each part Max. Marks:100 PART-A I a. Briefly describe the zonal structure of the earth and add a note on its density and composition. (06 Marks) b. Describe the property ofcleavage and hardness in minerals. (06 Marks) c. With the aid of physical properties, chemistry and uses, distigusih between i) Quartz and calcite ii) Chalcopyrite and orthoclase. (0E Marks) 2 a. What are Igneous rocks? How are they classified? Give a brief account texture and mode of occurrence ofthe fi2llowing igneous rocks . i) Dunire ii) pegmatire iii) Basah. D. Write short notes on corrent bedding. c. What is metamorphism? Mention the types of metamorphism and add a metamorph ism. -a what is wreathering? write a note on mechanical wearhering by thermal effect. (06 Marks) b. what are rivers? Describe the geological action of rivers and add a note on meandering oi rivers. (oE Marks) c. What is a soil and soil profile? Describe the various methods ofconservarion ofsoil erosion. What are earthquakes? Descrite tectonic course of earthquakes. Write a note on causes of land slides. PART-B c. Write a brief note on costal land forms. 5 a. What are Auits? How are they distinguished from joints and give.a brief account ofnormal and reverse faults? b. Write ihort notes on recumbent and isoclinal fold. ,, ,r:., . [;:ffi:[] 6 Explain: a. Tunneling a cross lolded rocks. b. Dam tundations "" f"il;i;;;;. (o? Marks) c. Siltingofreservoir. rueurueKs' ffiil::I3 a. What is a water fable? And add a note on parched water table. b. What are aquifers? Write a note on confined aquifer. c. Explain the electrical resistivity method for exploration of ground water. Write a short notes on following : a. Application ofremote sensing in civil engineering b. Impact of mining on environment c. GPS d. GIS. (20 Marks)