Chemisty Stream (2013-January) Question Papers

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Chemisty Stream (2013-January) Question Papers

  1. 1. r l , "j r ^. . 1*r,{. ., - t. "*"" , : dUSN lOMATl1 First Semester B.E. Degree Examination, January 2013 Engineering Mathematics -ITime: 3 hrs. Max. Marks:100 Note: 1. Answer any FIVE full questions, choosing at least two from each part. 2. Answer all objective type questions only in OMR sheet page 5 of the answer booklet. 3. Answer to objective type questions on sheets other than OMR will not be valued. PART _ AI a. Choose the correct answers for the following : i) The Leibnitz theorem is the formula to find the nh derivative of A) trigonometric function B) exponential function C) product of two algebraic functions D)product of two functions ii) The nh derivative of 5* is : A) log 5, 5- B) (log 5)" 5. C) g(loss)* D) (log 5;2 . ttoss)* iii) The value of c of the Cauchy mean value theorem for f(x) : e., g(x) : e-* in (3, 7) is : A) 5 B) 3 C)0 D)4 iv) The generalized series of Maclaurins series expansion is A) Taylor series B) Exponential series C) Logarithmic series D) Trigonometric series (04 Marks) b. VerifoRollestheorem forthefunction f(x)=x2(1 -x)2 in0<x< l andalsofindthevalueof c. (04Marks) c. If sin- y = 2 log(x + l), prove that (x +7) y,*r+ (2n + 1)(x +1)y,, + (n2 + 4)y" = 0 . (06 Marks) d. ExpandbyusingMaclaurinsseries,thefunction 1og(1 +sinx) uptofifthdegreeterms. (06 Marks)2 a. Choose the correct answers for the following : i) Thecurver= a intersectorthogonallywiththefollowiirgcurve:A)r= b B).= g).- D)r- r+coso l-cosO -r*r,ng l-sine cosO ii) If$ be the angle between the tangent and radius vector at any point on the curve r: (e), then sin $ equals to A)q B)r€ c).€ D).9 ds ds dr de ii i) L Hospitals Rule can be applied to the limits of the form : A) 0/0 B) 0 x co C) oo - co D) *o iv) Lt 1alt* - 1)x is of the following form : A) 0 x co B) co - co C) *" D) 0- (04 Marks) b. #-aQ Evaluate lim (tanx)"o-. (04 Marks) x +p r,2 c. Findtheradiusofcurvatureforthecurve xy=a(x+y) atthepoint (-2a,2a). ..Y^-."**_. ! (06 Mark) " :I (;kFE i iintL t Ir cgsS?ft&E- d. Find the Pedal equation for the curve r( 1 - cos 0) = 2a. (ql rIYt;:nffr. t,ij (06 Marks) : --"-"" t: Lfuf.lst14.Y3 a. Choose the correct answers for the following : i) If f(x,y):+.+.-]--.then *9T*y4 i, : A)0 B)9 -3f x y x+y ax fu ii) lf x: p cos 0, y : p sin 0, z: 2,1.,.n 6(x, y, z) : A)p B)l C)0 D)e a(i,e,rl lf an error of l% is made in measuring its base and height, the percentage error in the area of a triangle is A) 0.2o/o B) 0.02o/o C) 1o/o D) 2% iv) One of the necessary and sufficient condition for a function to have a maximum value is A)AC B,>0, A<0 B)AC-82=0,A:0 C)AC-82<0, A>0 D)AC-82>0, A>0 (04 Marks) b. If V = e0 cos(a log r) . prove that * - 1+.1* =o (06 Marks) ar- r ar r cld c. Examine the function f (x, y) = 1 + sin(x2 + y; for extremum values. (05 Marks) d. In calculating the volume of right circular cone, erors of 2Yo and I %o are made in height and radius of the base respectively. Find the percentage error in the volume. (05 Marks)4a. Choose the correct answers for the following : i) If F - VO, then the curl F : A) solenoidal B) irrotational C) rotational D) none of these ii) IfV:x2+y+3thengradVis: A)2xi+2yj B)Zx+2y C)2xi+2yj+k D)xi+yj iii) Thevalueofaofthevector p=(x+3y)i+(x -22)j+(x+az)k,whichissolenoidal: A)-2 B)-l c)0 D)3 iv) lfR:x2y *y2z+z2x,then LaplacianofRis : A)x+y+z B)x-y-z C)2(x+y + 71 D) 2(x - y + z) (0,1 Marks) b. Find div F and curl F, where F = V(x3 * y * ,t - 3xyz) . (06 Marks) c. Prove that curl (0 D) = 0 curl il + grad 0 x [. (06 Marks) d. Show that the cylindrical system is orthogonal. (04 Marks) PART _ B5 a. Choose the correct answers for the following : i) The value of "/j.o, * .in, x dx is A) 1lg9 B) l/100 C) ,T/100 D) 99l100
  2. 2. IOMATII ii ) * x) = *(a - x.) is The curve y{a A) symmetric about the x-axis B) syrnmetric about the x & y axis C) symmetric about the y-axis D) none of these iii) The length of the arc y: (x) from x: a to x : b is )i ,.(#).(*) dx D) none ofthese B) 3/8 C) 1116 D) trl4 (04 NIarks) b. Obtain the reduction formula for lsin" J x d,x . (0,1 Iarks) c. Evaluare 2 (06 Marks) JrJu* - dx x . d. Find the ul.u ofun arch ofthe cycloid x: a(0 - sin 0) , y = a(l - cos 0). (06 Marks) a. Choose the correct answers for the following : f , . z--12 it Theorderand degreeofthedillerentialequation l,-[!f)I =.9L respecively is [ (axi.] dx A) one, two B) one, one C) two, one D) three, two ii) The differential equation Il+e,,.|d**.. [r-Ildv = 0 is L J L vl A) homogeneous and linear exact C) non-homogeneous and exact D) none ofthese B) homogeneous and iii) Thesolutionofthedifferential equation!I="**: A)e**ev:c B)e+e-v:s C)e-s-v:s D)e*v-s dx iv) Replacing dyldx by -dx/dy in the differential equation of(x, y, dy/dx) = 0, we get the differential equation of A) polar trajectory B) orthogonal trajectory C) trajectory D) none ofthese (04 Marks) b. solve !I-2x-Y+1. (06 Marks) dx x+2y-3 c. Solve dr + (2rcot 0 + sin 20)de = 0 . (06 Marks) d. x] Find the orthogonal trajectory of the family of coaxial circles * J t (04 Marks) a b+L = . a. Choose the correct answers for the following : i) The normal form of the matrix are A) [:, 0] .,[: D) all of these , [;] :] ii) Thesolution ofthesimultaneous equations x+y:3, x-y:3 is A) only trivial B) only unique C) unique and trivial D) none ofthese iii) In Gauss Jordan method, the coefficient matrix reduces to matrix A) diagonal B) unit matrix C) triangular matrix D) none ofthese iv) Ifristherankofthematrix[A]ofordermxnthenris: o/r.;T C)r>n D)r>m (04Marks) olUr.=n b. Findtherankof thefollowingmatrixbyelementarytransform, o=1, , , , ^ 104 varks) I l; ; ,, ,.] c. Findforwhatvalueofkthesystemofequations x+y+z=1, x+2y+42=k, x+4y+62:k2, possesasolution.Solve completely in each case. (06 N,tarks) d. Solve the following system of equations by Gauss elimination method: x+ y +z:9; x-2y + 3z: 8; 2x+ y z- 3 (06 Mark)8a. Choose the correct answers for the following : i) Ifthe determinant ofthe coefficient matrix is zero, then there exist A) trivial solution B) non-trivial solution C) unique solution D) no solution ii) If P is the modal matrix of an orthogonal matrix, then its inverse matrix is equal to A) P B) P C) diagonal matrix D) none of these iii) The quadratic form for the matrix o-f a trl is : A) ax2 + 2hxy+byz B) ax2+by2 C) ax2+2bxy+2by2 D) none of these Lh bl iii) The nature of the quadratic function of the matrix having the eigen values [0, 2, 4l is A) positive definite B) positive semi-definite C) negative definite D) negative semi-definite (04 Marks) b. Reducethematrix,=l-, rl tothediagonal o form andhence findAa. (06 Marks) L-, ol c. Find all the eigen values of the matrix s -6 z o I -l-u , -ol I . (04 Marks) 12 -4 3l d. Reduce the quadratic form 3xr + 3y2 + 322 + 2xy - 2yz + 2zx into canonical form. (06 Marks)
  3. 3. USN O6MAT11 First Semester B.E. Degree Examination, December 2012 Engineering Mathematics -I d o o Time: 3 hrs. Max. Marks:100 ! 0. Note: l. Answer any FIW full questions, choosing at least twofrom each part. o 2. Answer all objective type questions only on OMR sheet page 5 of the crnswer booklet. o 3. Answer to objective type questions on sheets other than OMR will not be valued.3e PART _ A;h-tl oo I a. Choose your answers for the following : (04 Marks)Eoo i) y: )h"" ,.= on If sin2x , r., (!<-Y.)otr A) -2".or[ 2* * + 2) I B) 2-"or(r, .+)-o D) -2-rir(2, .+)o>E* C) 2- ,n( z*+ +) 2)a: ii) If y: xlog(x+l) then yn isoo) (-l)n-(n-l)!x (-l),-(n - 2)!(x +60 ^, A B) cE$1"EcF"t" o0c G + l)"1 (x + 1) U= L!B$,EETY >€ (-1)*(n-2)!(x+n) c) D;None of these.-o(g (x+l)r?oia a0 or= iiD The angle of intersection of the curves r ? (.) s9.tro. l+0ooj A) cos-r3 B) coft3 C) tan-r D) tan 3.a=6,i iv) Pedal equation of the curve rcos m0 : a l.SLO A) r-1 = a* B) P = ar-r C) pr*-r = a* D) P2: ra* b. Find y, , if y : e-3cost*o.r>,: (04 Marks)trooo= c. If y"* * y-r/rn =2x,prove that (x2 - l)yn*z + (2n+l)xyn*r * (n2 * m2)yn:0 (06 Marks)sotr> d. Find the angle betweenthe curves r: a 1og0, r: a/ log0. (06 Marks)o-lr< a. Choose your answers for the following : (04 Marks)-C.I )o x i) If^u=- .then x 0u+y---isequalto Av.oz y dx AyL A) 2u B)u c)0 D)too. ^) ^) ^) ii) If u is a homogeneous function of order n is x&y then x2 {} *z*v {*+ y2 9-u i, ox- oxoy oy- A) nu B) n2u C) n(n- 1)u D) n(n+l)u. iii) If x: rcosO , y: rsin011r.r, #* is equal to 6(r,0) A)1 B)r c)l r D)0 I of4
  4. 4. O6MAT1I ir) E x i, called A) Absolute effor B) Relative error C) Percentage error D) Absolute & relative error. tf u = cosec-l-!] l " Rrove that -] I x + Y- , Ou ^ O2u , i,u tanu [13 tanul )vtt (04 Marks) 0x AxAy -L | 2 112 12 ] -f,- --L -l c. If u= Y, u =*,w=Y, showthat ?(Pvw) -O y (06 Marks) x z O(x,y,z) d. If the H.P. required to propel a steamer varies as the cube of the velocity and square of the length prove that a 3oZ increase in velocity and 4oh increase in lengths will require an increase about 17% H.P. (06 Marks)3 a. Choose your answers for the following : (04 Marks) ft i) Jsinxdx is equal to 0, A) zero B) 2! c)z D) 11 35 35 35 .. *. u) I .- dx rs equal to ;tt+x)z A)_n8 _8 B)- c)1 ,) lr1 15 15 15 iiD The shape of the curve , : t cos 20 is A) Three leaved B) cycloid C) cardiode D) Lemnisate of Bernoulli iv) The curve f fu - : * (a + x) passes through A) origin ^) B) Node C) x-axis D) y-axis n/2 n-1 b. If I,,,n: Jsin xcosxdx ( m> 0, n> 0 ); showthat In,.,n: ln,,.n-2 (0.1 Marks) 0 m+n a Evaluate J + a)t dx l(* (06 Marks) 0 d. Trace the curve r: a sin30 (06 Marks)4a. Choose your answers for the following : (04 Marks) i) Length of one arch of the cyliod x: a(t - sint), y: a(1 - cost) is A)-8a B)8a C).r/I-a D): 8a ii) Surface area of revolution about x-axis is s : A) ,;b],,-(t) dx B)n D)n iii) Area of the cardiode r: a(1+cos0) is fr fi A) lrde J 0 B) 2 Jrde 0 cl ] i..o,eae to D) 2icosede 0 .
  5. 5. O6MAT11 iv) Length of the loop of the curve x : t2 ,Y: t- t3l: is N 2J1 B) - 4",5 ,, ill D 4J1 b. Find the area enclosed by the asteroid x2t3 + i2t3 : ;t/3 . (04 Marks) c. Find the area of surface of he solid generated when the cardioid r: a(l + cos0) revolved about the initial line. (06 Marks) d. Prove ttrat ^i log(1+ Y s x) =rffi-r] (06 Marks) 0 PART _ B a. Choose your answers for the following : (04 Marks) D Homogeneous differential equation can be reduced to a differential equation by substitution A)x+Y:v B)Y:vx C)xY:v D)x-y:v. ii) (1 + xy)ydx + (1 - xy)xdy: 0 then I.F. is N 2*>? B) rv ,r# D+ x-y- iii) - 2x: c represenls thg orthogonal trajectories of the family The equationy A)y:ae-2* B)*+ZS?:a2 C)xy:a D)x+2y:a iv) The general solution of the differential equation 1 = + tanl is dxxx A) sinl: c B) sinl=cx x C) cosl = cx x D) "orl = " x x b. Solve (x - ylogy + ylogx)dx + x(logy - logx)dx: 0 (0,f Marks) c. Solve *, I - xy - -yo cos x dx (06 Marks) d. Test for self orthogonality rn: a sin n0. (06 Marks)6a. Choose your answers for the following : (04 Marks) r) Ihesertes .2345 rs F-T*?-T+........... A) Conditionally convergent B) Absolutely convergent C) Divergent D) None of these. l- r ii) )lr+:ll-n - is "L n-l A) Oscillatory B) Convergent Divergent C) D) Absolutely convergent limit [,, - I iii) By Raabes test Iun is convergent if I - I n -) colun+l l I A) Equal to one B) Greater than one C) Less than one D) None of these. iv) t-l*1-1*l 234 5 byLebnitzstest A) Monotonic decreasing B) Divergence C) Oscillatory D) Convergency b. Testthe series for convergence. 1*{ + 369 +................ (04 Marks) 4 4.7 4.7.10 3 of4
  6. 6. O6MAT11 @( ?n- c. Find the nature of the series ),1 t -: I (06 Marks) ;i n) Test the series x + x + x +-i-+..... " " xo lor absolute convergence. (06 Marks) d. 2! 3! 4l7a. Choose your answers for the following : (04 Marks) D The sum of the direction cosines of a straight line is A) zero B) one C) constant D) None of these. ii) The equation of a straight line parallel to the x-axis is given by I LT x-a v-b z-c - x-a v-b z-c u Ut 111 011 - x-a v-b z-c / r x-a v-b z-c I l -i 001 t00 iiD A line makes angles &, F, y with the co-ordinate axes then - sin2cr + sin2B + sin2y : A)1 B)2 c)3 D)0 iv) Three lines are coplanar if A) They ate concurrent B) A line perpendicular to each other C) They are concurrent and a line is perpendicular to each of them D) None of these. b. Show that the angle between two diagonals of a cube is cos-1 (04 Marks) 3 c. Find the equation of the plane which bisects the line joining (3, 0, 5) and (1,2, -l) at right angles. (06 Marks) d. Find the shortest distance between the lines and its equations: *-8_ y+9 *-15 _y-29 _r-5 =z-10 u.rd 3 8 (06 Marks) 3t67 -s8 a. Choose your answers for the following : (04 Marks) i) Curl($u) is equal to A)$gradu+ugrad$ B) grad$.u + $div u C) (grad $)xu + $(curl u) D) (Q.v)u + (u.v)$ ii) If curl F : 0 then the vector F is said to be A) solenoidal B) Rotational C) Inotational D) Angular velocity iii) If 7: xi + yj + zk then V. i is equal to A)3 B)2 c)1 D)0 iv) If F : V(x3 + y3 + z3 - 3xyz) then curl F is A)6(x+y+z) B)(x+y+z) C)1 D)0. b. Find the directional derivative of $ : xy2 + yz3 at (1,2, -l) in the direction normal to the surface xlogz->?:-4 at(-I,2,1). (O4Marks) c. Find the constants a and b such that F:(axy + z3)i+ (3x2 - z)j + (b*r - y)k is irrotational and find the scalar function such that F: V0. (06 Marks) d. IfA: 2*i_ 3yzj+ vt2kand i :2r-x3y find A : v0 and (Axv$) at (1, -1, 1). (06Marks) JJ&&g 4 of4
  7. 7. USN 06crIBt2t22 First/Second Semester B.E. Degree Examination, December 2O1^2 Engineering Ghemistry () () o Time: 3 hrs. Max. Marks:100 Cd ! o. Note:I. Answer FIW full questions choosing at least two from each port. 2. Answer all objective type questions only in OMR sheet page 5 of the Answer Booklet. o 3. Answers to objective type questions on sheets other than OMR will not be valued. oEPbo! PART. A-y- I a. Choose the correct answer : (04 Marks)d9 i) Which of the following is not a primary fuel.-*ll A) Wood B) Crude petroleum oil C) Naturalgas D) Kerosene trca.E o.r ii) The following is used as antiknock agent cB+ A) Triethyl lead B) Biethyl lead C) Tetraethyl lead D) Lead bromide9doe iii) Photo voltaic cell is used to get-cO A) Light energy B) Heat energy C) Electrical energy D) None of these o> iv) Specific heat of water is*.^ A) 2.5kJ kg- B) 3.0 kJ kg-1 C) 8 kJ kg- D) 4.2k1kg-l/t<a: b. Define gross and net calorific value of a fuel. (04 Marks)oc) c. What is photo voltaic cell? Explain the working of a photo voltaic cell. (06 Marks).6Oo! d. Calculate the gross calorific value of a sample of coke from the following data :40tr Mass of coke: .006 kg ; Water equivalent of calorimeter:2.5 kg ;-o>! Mass of water : I .3kg ; Specific heat of wate r : 4.187 kJ kg-t k- ; Rise in temperature : 1.5K./66r (06 Marks)-?o o{= 2 a. Choose the correct answer : (04 Marks)o- 6. i) The conductance of an electrolytic solution depends on the conduction oftro.o A) Cation only B) Anion onlyoi C) Cation and anion D) Colour of the solution5=to ii) The primary reference electrode isotE A) Calomel electrode B) Hydrogen electrode!o5.Y C) Standar hydrogen electrode D) Zincelectrode>! iii) Glass electrode is cES{T,is&x-oo"ibo LISR&BVo=so A) ion - selective electrode B) H;" selective electrodetr> C) Membrane electrode D) All ofthese=oo iv) The element which is kept at the top of electro chemical series isU< A) AE B) C, C) ZN D) Lr+N Define standard electrode potential and derive Nernsts equation for electrode potential.oo (05 Marks) c. What is a reference electrode? Explain construction and working of calomel electrode. (05 Marks)oa d. Write the half - cell reactions and net - cell reaction for the cell. c01,, I cd*(o.olM) ll c,z.(0.5M) I c,,,1 The standard reduction potentials of cadmium and copper are - 0.40V and + 0.34 V, respectively. Calculate the e.m.f. of the cell. (06 Marks) a. Choose the correct answer : (04 Marks) i) Anode material used in lead - acid battery is A) Ms B) PbO2 C) CU D) Spongy lead
  8. 8. 06clJint2t22 ii) The products produced in MeOH-Oz fuel cell A)COz + HzO B) CO + H2O C) COz + Nz D) None ofthese iii) Which of the following is a classical battery A)Ni - Ca B) Lr- MnOz C) Zn - alr D) Ni-MH iv) L1 metal is used in Lt - M,Oz battery because it is A)Light B) Hard c) Heavy D) Non - Corrosiveb. Explain the following battery characteristics : i) Cycle life ii) life Shelf iii) density. Energy (06 Marks)c. Explain the construction of Pb - acid battery. Give the reactions during discharge and recharge. (06 Marks)d. What are fuel cells? Explain the construction and working of Hz - Oz fuel cell. (04 Marks) Choose the correct answer : (04 Marks) i) When a metal is corroded A) Metal is converted into its compound. B) Metal compound is converted into metal C) Brightness of the metal increases D) Hardness of the metal decreases. ii)Which of the following metal gives sabrificial protection to iron against corrosion A) SN B) Cu C)K D) Z, iil) Corrosion process involves reaction of metal with A) oz B) HzO C) Oz and HzO D) None ofthese irr) If nuts and bolts are made up of different match, the corrosion is due to A) differential aeration B) differential metal C) causticembittlement D) None of theseb. Define corrosion of a metal. Explain electrochemical theory of corrosion taking iron as an example. (06 Marks) Explain the effect of the following factors on the rate of corrosion of a metal : D Temperature ii) Relative areas of anode and cathode iii) PH. (06 Marks)d. Explain water - line corrosion with an example. (04 Marks) PART _ B Choose the correct answer : (04 Marks) i) Use of HCHO in electroless plating of Cu is to , A) Oxidation C, B) Reduction of copper ions Conversion of Cu** into C, C) D) Both B and C ii) Use of levelers in electro plating is to A) increase the thickness of coating B) decrease the thickness of coating C) to make the deposit brighter D) achieve uniform thickness of coating. iii) To coat an irregular article uniformly, the bath used is A) Acid bath B) Alkaline bath C) Neutral bath D) of good throwing power iv) During electro plating of an article, current density employed is A) High B) Low C) Optimum D) None of theseb. What is electroless plating? Mention any two advantages of electroless coating. (04 Marks)c. Discuss electroless plating of Copper. (08 Marks)d. Write a note on decomposition potential. (04 Marks)a. Choose the correct answer : (04 Marks) i) During titration of HCt against NaOH conductance decreases initially because A) HCt is a strong acid B) NaOH is a strong base C) Highly mobile H* ions are replaced by less mobile Na* ions D) Reaction takes place slowly.
  9. 9. 06cIJEl2l22 ii) During estimation of FAS potentio metrically the indicator electrode used is A) Platinum electrode B) Calomel electrode C) Glass electrode D) Ag/AgC0 electrode. iii) In Colorimetric determination of copper the colouring agent used is A) NH4 C0 B) NH4NO3 c) (NH4)2 04 D) NH4 OH iv) Colorimetry involves measurement of absorbance using monochromatic light in the A) Visible range B) I R range C) UV range D) Smallrangeb. Distinguish between thermotropic and lyotropic liquid crystals, with examples. (06 Marks)c. Define specific conductance and explain the estimation of hydrochloric acid in an given solution conducto metrically using standard solution of Na OH. (06 Marks)d. What are instrumental methods of analysis? Indicate the advantages over conventional methods. (04 Marks)a. Choose the correct answer : (04 Marks) i) An example for natural polymer is A) Resin B) Plastic C) Polyester D) Silk ii) Bakelite is A)Thermoplastic B) Thermosetting plastic C) Homo polymer D) Addition polymer iii) Nylon is made up of A) Adipic acid B) Hexamethylene diamine C) Both A and B D) Phenol formaldehyde iv) Teflon is A) Hydro carbon polymer B) Fluro carbon polymer C) Hetero polymer D) Thermo setting polymerb. Explain free radical mechanism of addition polymerization taking ethylene as an example. (06 Marks)c. of Explain synthesis and uses i) Teflonii) Butyl rubber. (06 Marks)d. Write a note on thermoplastics and thermosetting plastics. (04 Marks)a. Choose the correct answer : (04 Marks) i) Temporary hardness in water is caused by A) Ca(HCO:)z B) CaCt z C) CaSO+ D) MgCt2 ii) During the preparation of FAS solution in COD experiment dilute HzSO+ is added to FAS. Crystals to A) make the solution acidic B) speed up the process of dissolution C) prevent hydrolysis D) BothA&C iii) During the determination of total hardness of water by EDTA NH3 - NH4 Ct buffer is used to A) lncrease PH B) To decrease PH C) To maintain PH at 10 D) None of these iv) In reverse osmosis, a semi permeable membrane is used to remove A) Suspended impurities B) Colloidalimpurities C) Bacteria D) Dissolved saltsb. Explain the determination of total hardness of water by EDTA method. (06 Marks)c. In a COD experiment 28.1 mt and 14.0 mt. of 0.05 M FAS solution were required for blank and sample titration respectively. The volume of test sample used was 25m1.. Calculate the COD of the sample. (04 Marks)d. How is sulphate in water determined gravimetrically? (06 Marks) **r(r<* ? nf ?
  10. 10. USN 06ccPt3l23 First/Second Semester B.E. Degree Examination, December 2Ol2 Gomputer Goncepts and G Programming 0) (J Time: 3 hrs. Max. Marks:100 o (d ! Note: l. Answer any FIW full questions, choosing at least TWOfrom each part. a 2. Answer ull objective Stpe questions only on OMR sheet page 5 of the answer booklet. 3. Answer to objective type questions on sheets other than OMR will not be valued. o PART _ A C) ! I a. Choose your answer for the following : (04 Marks)?o i) Which of these is a computer for individual user? A) Network Server B) Minicomputerv? dU C) Note Book Computer D) Mainframe Computer3 oo ll ii) In a multi-button mouse, one button must be designated as The buttontroo.= .-I A) First B) Left C) User D) Primaryxoo iii) A monitors _ is measured in Hertz (H2)YC]otra)-.c A) Refresh Rate B) Resolution, C) Size D) Viewable Area iv) Which of these is a non-impact printer?3z A) Dotmatrix Printer B) Inkjet Print C) Band Printer D) Line Printer.6= b. Explain the essential computer hardware. (08 Marks)oc)63O c. Explain briefly the various groups of keys in the standard keyboard layout. (05 Marks)ooooc d. Explain briefly the two main categories of printers. Give one example in each category.(o.8 (03 Marks)26-o(d 2 a. Choose your answer for the following : (04 Marks)Ca A group of eight bits is called a _ OE A) Bit B) Byte C) Nibble D) Wordlengtho-a D memory requires power to store dataoj A) Flash Memory B) ROM ^= C) Volatile Memory D) Non volatile Memory9Eao6 tE ii) The _ standard promises to provide enoughCgE!o A) ASCII B) RAM C) EBCDIC , D) UnicodeJEi,a iir) lets you store more data on a magnetic disktrbo A) Extraction B) Defragmentation C) Coo= b. List the commonly used ports, in modern computers. (04 Marks)+otr>:o c. Explain the various factors affecting processing speed. (08 Marks)VLo c6?,iqflt:; d. How is data organtzed on magnetic disk? Explain. LlBflSlqt (04 Marks)r<-i ci 3a. Choose your answer for the following : (04 Marks)oo D The program that controls the systems user andz application software is _ A) Complier B) Assembler C) Operating System D) Interpreteroo. ii) The acronym DOS stands for A) Distributed Operating System B) Disk Operating System C) Driver Operating System D) Diskless Operating System A is an agreed - upon format for transmitting data between two devices. A) Topology B) Protopology C) Prototype D) Protocol A collection of related web pages is called a A) Web Book B) Web Site C) Web Directory D) Web Engine. b. Write a note on windows XP operating system. (04 Marks) c. Briefly explain the different network topologies. (08 Marks) d. Define the terms "WWW" and "E-mail". (04 Marks)
  11. 11. 06ccPt3l234 a. Choose your answer for the following : (04 Marks) i) is the graphical representation of an algorithm. A) Algorithm B) Program C) Flowchart D) Diagram ii) have fixed meaning that cannot be changed A) Variable B) Constant C) Identifier D) Keyword iii) In C, which of the following is an invalid variable name? A) Const B) Keyword C) Row-total D) Tax- 1 iv) In flowchart, the symbol used to represent decision making is A) Rectangle B) Rhombus C) Circle D) Parallelogram. b. Define algorithm. Draw a flow chart to find largest of three numbers. (05 Marks) c. Define variable. List the rules to form a valid variable name. Give example. (05 Marks) d. Explain with examples : i) Assignment operators ii) Evaluation of expressions. (06 Marks) PART - B5a. Choose your answer for the following : (04 Marks) i) The output is left justifled within the field with the use of format flag A)#0 B)- C) 0 D)#e ii) What will be the value of z, when the following code segment is executed? int x : 37,y : 42;z: (x > y)? x- y : y- x ; A) -s B) 37 c)s D) 42 iii) Multiway selection can be accomplished using statement A) Switch B) Continue C) goto D) if iv) The expression ! (x <: y) can be replaced by the expression A) x:: y B)y<:x c)y>:x D)x>y. b. Explain formatted output statement with examples. Give its general syntax. (06 Marks) c. Write the general form of ?: operator. Explain with example. (05Marks) d. Write a program to determine whether a given number is multiple of 7 and print the appropriate message. (05 Marks)6 a. Choose your answer for the following : (04 Marks) i) What is the output of the following code segment int count: 5; while(count-->0) pintf ("Yod", count); A) 54321 B) Error c) 432t D) 43210 ii) Which of the following looping construct implements infinite loop? A) for(i:l:I<10:i++; B) for (; ;) C) for(i:0, x:0;x<5; i++. x++) D)for(I:10; i>0;i+:2) iil) Determine the number of times, the following loop will be executed x:5 y: 50 while (x <: y) { I x: y/x ; t A) Infinite B) Continue C) Break D) None ofthese irr) An early exit from a loop can be accomplished by using _ statement. A)Switch B) Continue C) Break D) Noneofthese. b. Differentiate between WHILE and DO-WHILE statements. (04 Marks) c. Explain the general syntax of FOR statement. Give example. (06 Marks) d. Write a program to compute the sum of digits of a given integer. (06 Marks) 2 of3
  12. 12. 06ccPt3t237a. Choose your answer for the following : (04 Marks) i) Which of the following declaration is illegal in C? A)Char city [5]: {B} B) int num[5] : {10,20} C) float total: {0.5,6.54, 2.5 D) int size[3] : { 10, 20, 30, 40} ii) What is the output of the following code segment? int m[ ] : {1, 2,3,4 int x, y: 0; for (x: 0; x < 4; x++) y: y + m[x]; printf ("ohd", y); A) 10 B)6 c)e D) None of these iii) What is the output of the following code? : int code t2lt3l {{10, 20}, {30,40, 50}}; printf ("%d", code t0]t2]); A) Error B)0 c) 20 D) 40 iv) Usually, large arrays are initialized during A) Compile time B) Runtime C) Both A and B D) None of these b. Write a program to find sum and average of N integers using single - dimensional array. (05 Marks) How do you declare and initialize atwo - dimensionalarray. Explain with example. (04 Marks) d. Write a program to read two matrices A and B and print the following : i)A+B iDA-B. (07 Marks)8a. Choose your answer for the following : (04 Marks) i) By default, is the return type of a C function A) float B) int C) char D) void ii) The list of parameters in the function definition are called A) Formal Parameters B) Actual Parameters C) Local Variables D) None of these iii) If "int mul(int x, int y)", is a function declaration, which of the following function call has an error? A) int z: mul(5, 10); B) P: mul(3, 2) * + C) mul(5, 2): l0 D) int Q : mul(5, 6)/2 iv) A variable declared in a function is called A) Actual Variable B) Local Variable C) Global Variable D) Formal Variable b. List the advantages of using user - defined functions : (04 Marks) c. Write a note on category of functions. (05 Marks) d. Write a function PRIME that returns 1 if its argument is a prime number; otherwise it return 0. Write main( ) function to read an integer from the keyboard and calls the function PRIME passing the given integer as an argument. Print the appropriate message depending on the value retumed by function PRIME. (07 Marks) *A OF "N &&&&J {Tffi*.L CENTffi.#.L 6 ii) Ll&ffiAmf -( * ,/-"#,
  13. 13. USN 10ccP13/23 First/Second Semester B.E. Degree Examination, January 2013 Gomputer Goncepts and C Programming d Time: 3 hrs. Max. Marks:100 Q o Note: 1. Answer FrvEfull questions choosing at least twofrom each part. ! o. 2. Answer all objective type questions only in OMR sheet poge 5 of the Answer Booklet. 3. Answers to objective type questions on sheets other thun OMR will not be valued. q) PART - A () ! I a. Choose the correct answer : (04 Marks).)X i) Which of the following is not an input device. (A) plotter (B) scanner (C) key board (D) mouse ii) Conversion of single program to M/C language is done by (A) linker (B) compiler (C) (D) OSeditor_o -^t iii) Computer is controlled by _ ioo (A) Hardware (B) Software (C) Instructions (D) Statement.=N iv) Computer converts data intoY (A) Information (B) Charts (c) yP, o/P (D) Software o.l b. Explain the basic structures of a computer, with a neat diagram. (06 Marks)=c) c. Explain the following input devices : i) Pen based input devices ii) Optical input devices. (06 Marks)a-^ d. Explain information processing cycle. (04 Marks)aZ 2 a. Choose the correct answer :#:l i) DOS is an example of _ interface.o() (A) Command line (B) Check box (C) Graphical (D) Parallel+L ii) Email is a system for exchanging messages through acoc (A) client (B) program (C) Network (D) back bon iii) Every webpage has a unique address, called a/G (A) Hyperlink (B) URL (C) HrrP (D) wwwG- iv) In a _ n/w all devices are connected to a hub-?o (A) bus (B) star (C) ring (D) mesh b. Define operating system. What are the functions of operating systems? (06 Marks)A-f: c. Explain the following storage devices : i) Hard disk ii) Compact disk. (06 Marks)o-X d. Explain the characteristics of networks. (04 Marks)<); a. Choose the correct answer : (04 Marks)6= i) C is what kind of language?3C,o til (A) Machine (B) Procedural (C) Assembly D) Object oriented programming. ii) The hexadecimal constant is preceded by :L6.v ajl (A) ox (B) o (c) rx (D) H;(H iii) The number 025 is number.ib0 (A) Decimal (B) Octal (C) Hexa (D) Binary(J=o- :i ir) The operator % yieldsxo (A) Quotient (B) Percentage (C) Reminder (D) Fractional parto- b. Briefly explain how to create and run the program. (04 Marks)(r< c. Explain 5 - types of data with its range valve. (06 Marks)*c d. Explain formatted input and output functions. (06 Marks)o)o a. Choose the correct answer : (04 Marks)z i) What is the size of character in bytes? (A) I (B) 2 (c) 3 (D) 4Ho ii) Puts is functiong (A) (B) i/p o/p (C) Input output (D) None iii) The conversion specifier is used to represent string (A) % d (B) %c (C) %f (D) %s iv) Keyrvords are (A) Identifier (B) Reserved words (C) Variable (D) None b. What do you mean by type conversion? Explain explicit type conversion with examples. (04 Marks) c. Explain the following operators with examples : i) Conditional ii) Size of iii) Bitwise. (09 Marks) 1 af )
  14. 14. 10ccP13/23 d. wherea:5, b: 10 and c: -6. Determinethe value of a each ofthe following logical expressions, i) a>b&&a>c ii) b>15&&c<0 la>0 iii) (a12.0::0.0 &.8.bt2.0i:00)iic<0.0. (03 Marks) PART - B Choose the correct answer : (04 Marks) i) The default return type of a function is (A) int (B) float (C) char (D) double ii) How many values retumed by functions by default (A) ONE (B) rwo (C) rHREE (D) FOUR iii) Which is not a variable storage class (A) Automatic (B) Extern (C) Static (D) Dynamic iv) Which keyword is used to declare external variable (A) external (B) extern (C) auto extern (D) None b. Explain the elements of user defined functions. (06 Marks) c. Write a function prime that returns 1, if its argument is a prime number and returns O. Otherwise. Using the same function, write a program to check whether the number is prime or not. (05 Marks) d. Write a note on parameter passing techniques. (05 Marks) a. Choose the correct answer : (04 Marks) i) Multi way decision making using (A) if (B) for (C) while (D) switch ii) 5 > 3? printf ("hello": printf ("C") ; (A) hello (B) C (C) hello C (D) None iii) Theresultof an expression2> 8 & &2 < 8 is (A) True (B) False (C) 10 (D) 20 iv) Size of (float) is (A) 2 (B) 4 (c) 8 (D) 1 Explain switch structure with flowchart and write a program to display name a day in week for the given day number, assume day one is Monday. (06 Marks) Write a program to find the given number is palindrome or not using while loop. (05 Marks) d. Write a program to find square of a given number using for loop. (Note : Find square using successive addition method). (05 Marks) a. Choose the correct answer : (04 Marks) i) Array is an example of data types (A) Derived (B) Basic (C) User defined (D) None ii) An array a [5] consists of number of elements. (A) 10 (B) s (c) 25 (D) None iii) An array a [5] [3] consists of elements. (A) s (B) 3 1s (c) (D) None iv) Which of the following is not a data structure (A) Linked list (B) Stack (C) Queue (D) Pointer b. Explain how a 1 - Dimensional array can be declared and initialized, write a program to add all the n elements of an array (06 Marks) c. Explain the following string handling functions, with examples : i) Strcat ii) Shcpy. (04 Marks) d. Write a C program to multiply A[M X N] and B[P X Q] matrices and stores the result in C marrix. (06 Marks)8a. Choose the correct answer : (04 Marks) i) Parallel computing is _ execution of instructions. (A) Simultaneous (B) Serial (C) Accurate (D) Complete ii) Which of the following is not a syrchronization construct? (A) Single (B) Master (C) Section (D) Critical iii) Howmanythreadswouldbecreatedfortheparallelexecutionoffor(x:0;x<10;x++){ }? (A) l0 (B) e (c) il (D) 0 iv) Which of the following does not signifz the need of using threads? (A) Enhanced performance (B) Reduced processor idle time (C) Hidden memory latency time (D) Error - free computation. b. Explain the data handling in open MP. (06 Marks) U. What is thread? Explain the need for threads. (06 Marks) d. Write a note on environment variables of open MP. (04 Marks) 2 of2
  15. 15. USN 06ELN1s/25 First/Second Semester B.E. Degree Examinationo January z0l3 Basic Electronics a) o () Time: 3 hrs. Max. Marks:100 (g Note: l. Answer any FIVE full questions, choosing at least twofrom eoch part. 2. Answer all objective type questions only on OMR sheet poge 5 of the answer booklet. o 3. Answer to objective Upe questions on sheets other than OMR will not be valued. C) ! -o? o PART _ A I a. Choose the correct answers lbr the following : (04 Marks) 6e i) The Depletion layer in a pn junction contains troa A) Electron , B) Holes C) Electrons and holes D) Ions:: AO ii) The turn on voltage of a Si Diode is nearlyYOoJtr-C(I) A) 0.7 volts B) 0.3 volts C) 1 volt D) 0.1 volts iii) Once a Zener diode goes into break down the parameter which does not change mucho2 isa= A) Current B) Resistance C) Voltage D) Capacitanceoc) iv) If f Hz is the frequency of the input given to a fullwave rectifier, the output frequency will beo0i A) fHz B) 2f Hz C) 3f Hz D) 4f Hz>e-6 b. With a neat diagram, explain the process of formation of depletion layer in a pn junction.E(B (04 Marks)-?AJ c. The incremental change in the voltage and the current is found to be 0.19V and 37 .6 mAoj= respectively from the forward characteristics of the diode. Determine the ac resistance of the5::tro.^X junction. (04 Marks)o..o_, d. A single phase half wave rectifier supplies power to a 1 KfJ load. The inpue voltage isi.eSJE 200 volt rms. Neglecting forward resistance of the diode, calculate:totEa i) Va" ; iD V,n,. i iii) Ia. ; iv) Ripple voltage (rms calue). (08 Marks)!o5.e>h 2 a. Choose the correct answers for the following: (04 Marks)bo- i) The current amplification factor o6s of a transistor is given bytroOa. ;jtr> A) ,,1, ,rr/, ,rr,/, D)r,/,=oVLo /U< ii) In the following relationships between cr and B, one of the expression is wrong-No A) B=* B).,=+ C) c[= l+0 B D)1-cr= 1 1+FZ iii) For transistor to function as a normal amplifier aL A) EB junction is reverse biased and CB junction is forward biased. B) EB junction is forward biased and CB junction is forward biased. C) CB junction is reverse biased and EB junction is reverse biased. #9 D) CB junction is reverse biased and EB junction is forward biased. iv) 86. of a transistor is A) Equal to cr,6. B) Less than o6. C) Greater then cra. D) None of the above 1n€A
  16. 16. 06ELN15/2s b. Draw the symbols of a pnp and an npn transistors. Which of the transistor current is always the largest? Which is always the smallest? Which two currents are relatively close in magnitude? (05 Marks) c. Explain the working of a transistor amplifier in the CE configuration. Draw its output characteristics and mark the three regions of operation on the characteristics. (06 Marks) d. Determine Fo., IE and cr4. for a transistor where Is : 50pA and Ig : 5mA. Neglect I6s6. (05 Marks)3a. Choose the correct answers for the following: (04 Marks) i) The best location of the Q-point for a transistor is A) At the bottom of the dc load line B) At the top of dc load line C) At the centre of the dc load line D) Outside the dc load line ii) The dc load line of a transistor circuit A) has a positive slope B) does not contain the Q-point C) has a negative slope D) gives graphic relationship between Ic and Ie iii)The early effect in a bipolar junction transistor is caused by A) Fast turn on B) Fast turn off C) Large collector base reverse bias D) Large emitter base forward bias iv)A BJT is said to be in saturation region if A) both junctions are reverse biased B) EB junction is reverse biased and CB junction is forward biased C) EB junction is forward biased and CB junction is reverse biased D) both junctions are forward biased b. Define bearing of a transistor. Explain with a neat circuit diagram the operation of a collector to base bias circuit. What is the advantage of this circuit over a fixed bias circuit? (08 Marks) c. Given that I6q : 2mA and V66q : 10V. Determine R1 and Rc for the network shown. VeE : 0.7V. (08 Marks) l--V" roFe. ; Fig.Q.3(c)4 a. Choose the correct answers for the following : (04 Marks) D The latching current in a SCR A) is less than holding current B) is greater than holding current C) is equal to the holding current D) None of the above ii) Which of the device mentioned acts like a diode and two resistors A) SCR B) TRIAC C) DIAC D) UJT iii) A FET consists of A) Source B) Drain C) Gate D) All the above iv) Which of the following is a unipolar device A) Diode B) BJT C) SCR D) FET 2of4
  17. 17. 06ELN15/25 Draw the symbol and the equivalent circuit of UJT. Using the equivalent circuit explain the working of UJT and draw its characteristics marking the various regions on it. (08 Marks) c. Explain the working of a SCR using two transistor model and obtain the expression for the anode current. (08 Marks) PART _ B5 a. Choose the correct answers for the following : (04 Nlarks) i) The gain of a cascaded amplifier is A) Sum of the voltage gains of all the stages B) difference of the voltage gains of all stages C) Products of the voltage gains of all stages D) None of the above rss ii) The frequency of oscillations in an oscillator is given A)1 B) 2nLC C) 2n"lLC D) 1 2nLC nTyc iil) An oscillator is A) like an alternator B) an amplifier C) an amplifier with positive feedback D) a rectifier iv) For a Colpilts oscillator Cr : 0.01 pF, Cz : 0.001prF and L : 15pH. Its operating frequency is A) l362kHz B) 1500 kHz C) 100 Hz D) 2651kHz b. Draw and explain a typical frequency response curve of a RC coupled amplifier clearly indicate the various regions in it. (06 Marks) c. List out the advantages ofnegative feed back. (04 Marks) d. A Hartley oscillator is designed with Lr : 20pH and L2 : 2mll and a variable capacitor. Determine the range of capacitance values, if the frequency of oscillation is varied between 1 MHz to 2.5 MHz. Neglect mutual inductance. (06 Marks) a. Choose the correct answers for the following : (04 Marks) D An Op-Amp A) amplifies the sum of the two signals applied across its terminals B) amplifies the product of the two signals applied across its terminals C) amplifies the difference of the two signals applied across its terminals D) None ofthe above ii) An ideal Op-Amp has A) infinite A" B) infinite R1 C) zero R. D) AX the above iii) An inverting amplifier has Rp:2Mf) and R1 :2KO.Its scale factor is A) 1000 B) -1000 c) 1o-3 D) -10-3 ir) CMRR of an Op-Amp is given by a; la,lle"l B) lA,l* lA"l c) E.i D) lA,l-la"l lA.l b. Draw the equivalent circuit of an Op-Amp. (04 Marks) c Draw the circuit of an Op-Amp as a non-inverting summer and device an expression for output voltage. - d. (06 Marks) Draw the basic structure of a cathode ray tube and explain its working. (06 Marks) 3 of 4
  18. 18. 06ELN15/2s7 a. Choose the correct answers for the following : (04 Marks) i) The main purpose of modulation is to A) Combine two waves of different frequencies B) achieve wave shaping of the carrier wave C) transmit low frequency information over long distances efficiently D) produce side bands ii) In amplitude modulation A) Carrier frequency is changed B) Carrier amplitude is changed C) Three side bands are produced D) Fidelity is improved iii)The binary addition of 1+1+1 gives A) 111 B) 10 c) 110 D) 11 iv) The binary equivalent of (A)ro is A) 1010 B) 1011 C) 1100 D) 1110 b. What are the basic components of a communication system? Draw and explain the block diagram of a typical communication system. (06 Marks) c. If the radiated power of an AM transmittei is 10kW, determine the power in the carrier for a modulation index of 0.6. (04 Marks) d. Perform the following subtraction using 2s complement i) 78-65; ii) 708-648. (06 Marks)8 a. Choose the correct answers for the following : (04 Marks) i) The output of a2 input OR gate is zero only when A) both inputs are zero B) either input is one C) both inputs are one D) either input is zero ii)A NOR gate is ON only when all its inputs are A) ON B) Positive C) High D) Zero iil) ABCD + ABD is equal to A) ABC B) ABC C) ABD D) ABD ir) A (A + B) is equal to A)B B) AB c) AB D)A b. Determine the output of the logic circuit shown in the figure (04 Marks) Fig.Q.8(b) c. Simplify the following : i) ag+A+AB ii) AB+A(B+C)+B(B+C) (06 Marks) d. Reduce the Boolean expression Y=aeCD+BCD+BCD+gel and implement it using logic gates. (06 Marks) ,(rrrrrr* 4of4

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