end term examination'note: (a) attempt any five questions in all, (b) question no..1 is...

Northern India Engineering College, New Delhi

(Please write your Exam. Roll No.) Exam. Roll No .

END TERM EXAMINATION'FIRST SEMESTER (B. TECH.) - JANUARY 20.11

Paper Code: ETMA ~ 101

Paper 1D : 99101

Subject: Applied Mathematics - 1

(Batch: 2010)

Time: 3 Hours Maximum Marks: 75

Note: Attempt Five qu~stions in all. Q. No. 1 is compulsory. Attempt one question from eachunit.

-z: Q. 1. (a) Find thereal part of the principal value of i1og(l+i) (3)

00 1(b) Test the convergence of the s~ries I. . .xc- O (3)

0=1 x 0 + x-n

(c) Find all the asymptotes of the curve

y4 -2xy3 +2x 3y_ x 4 -'-3x 3+3x 2y+3xy2 - 3y3 -2x 2 +2y2 -1= 0 (3).

(d) Show that

2 4x x x x

(3)log(1 +e ) = log 2+~+-. --. + ...2 8 192

(e) If 1m," ~ f cos'" x sin n x dx , then show. that

.r-

m .cas. x cas nx m. (3)1m n =-

m+ n+--. -.lm-1 n-1

m+n . '.

(f) Find the length of the curve y =log see x between the points

ITx=Oand x=-. (3)

3

1 P.T.O.

- '- ...-.--...-----------------~~-======'=='="~~~~-=- ..=--=~.=.-.=-.=.-=--=--=.--=--=--=-- =--=---=-=~--:....:- ~=. ~. ~-


(g) Fill in the blanks :

(i) Sum of eigenvalues of a matrix = of the matrix. (1)

(ii) Product of eigenvalues of A = . (1)

(iii) If A is an eigenvalue of A, then an eigenvalue of adj. A == .... (1)

(h) Prove that the eig;nvalues of a Hermitian Matrix are always real. (3)

(i) Solve : x2ydx-(x3+y3)dy=O (3)

UNIT - IQ. 2. (a) Using De-Moivre's theorem, prove that

1 .cas 69 +sin 6 9 = - (3cos 49 + 5)8 . (6)

(b) Discuss the convergence of the series

;x>O (6)

. (IT 8). .Q. 3. (a) If u = log tan 4+"2' then show that

9=-j log tan (IT +i~) (6). 4 2

,35

(b). Find the interval of convergence of the series x-~+~ -'-........ (6). . , 3 S

UNIT - II. . -1

Q. 4. (a) If y = e m SIll x, then prove that

(1- x 2) Y 11+2 - (2n + 1) x y 11+1 - (n 2 + m 2) y 11 = 0

and hence find the value of y 11(0) (6) ,

(b) Find the surface area of the solid generated by the revolution of

the lemniscate r 2 = a2 cas 28 about the- initial line. (6)


3asinecoseQ.5. (a) Trace the curve r =

cos3-e+sin3e(6)

(b) Find the curvature of x = 4 cas t, Y= 3sin t At what point on

ellipse does fhe curvature have greatest and least values? What

are magnitudes of greatest and least curvatures? (6)

UNIT - III

Q.6. (a) Reduce the following matrix into normal form and find its rank·ll -I2

;14' 1 0A= o 3 1 4 (6). 0 1 0 2

(b) Test whether the transformation

YI =2x I + x 2 + X 3

Y2=xl+x2+2x3

Y3 = X 1- 2x 3

is non - singular. Ifso, find the inverse transformation. (6)

Q, 7. (a) Determine the values of A and fl such that the following equations

x + y + z = 6, x + 2y +,3z = 10 ,x + 2y + Az =fl

have (i) no solution, (ii) unique solution, (iii)an infinite number

of solutions. (6)

Let A~H -2 -~lfind a modal matrix' P and corresponding(b) 3-1 3' ,

spectral matrix D ofA. (6)

3 P TO.

---:------.~ ----- .... -- ------~- - ----


UNIT - IVQ. 8. (a) Solve using method. of variation of parameters

d2 - _---y + 4y = tan2xdx2

(6)

- .(b) Solve d 2y +1dy.= 1216gx

dx2 x dx x2(6)

Q.9.dz z _ 2 2

(a) Solve -+-Iogz=-(\ogz)dx x x 2

(6) _(b) Solve the simultaneous- equations

dx \-+Sx-2y=tdt

dy _-+2x+y=O -dtbeing given x = y = 0 when t= 0 (6)

•••

4

-------------------------- - -------


(Please write your Exam. Roll No.) Exam. Roll No. ' .

END TERM EXAMINATIONFIRST SEMESTER (B. TECH.) -:-DECEMBER 2010

Paper Code: ETPII 103

Paper ID : 99103

Subject: Applied Physics - I,

(Batch.' 2004 - 2010)

Time: 3 Hours Maximum. Marks: 75

Note: (a) Attempt any Five questions in all, (b) Question No. .1 is compulsory, (c) Out of theremaining questions (2 to 9) attempt One question from each unit. Missing data, if any, may beass limed suitably.

Q.1. (a) How would you obtain a sustained interference pattern with goodcontrast? (2)

(b) What will happen if a wedge shaped film is placed in white light? . (2)

(c) Explain why a compensating plate is needed in Michelson'sInterferometer? " (2)

(d) Compare (qualitatively) the resolving power and the dispersivepower of two gratings (A ,and B) of same width but with differentnumber of lines. (3)

(e) How would you differentiate unpolarized light from circularlypolarized light? (2)

(f) Is the specific rotation a temperature dependent? Explain. (2)

(g) . Differentiate between spontaneous and stimulated emission. (2)

(h) What is the role of helium gas in He-Ne lasing? (2)

(i) What do you understand by modes in optical fibre, communication? (2)

(k)

(1)

What is the refractive index of the cladding if the numerical aperture

of an optical fibre is 0·5 and the core refractive index is 1·54?

Howwouldyou correlate the quality factor with theresonance?

Why you do not observe time dilation in day-to-day p~enomenon?

(2)(2)

, (2)

1 'P.T.O.


UNIT-I

Q.2. (a) Explain the formation of fringes in Michelson's Interferometer withsuitable diagram. (5)

(b) How are the circular fringes of Michelson's Interferometer differentfrom Newton's rings? (4)

o(c) Light of wavelength 5893 A is reflected at nearly normal incidence

from a-soap film of refractive index, (u) == 1·42. What is the leastthickness of the film that will appear (i) dark, (ii) bright. (3·5)

Q.3. (a) . Sketch the intensity distribution in case of Fresnel's diffraction at astraight edge. Label various maxima and minima. Calculate the ratioof fringe widths for third maxima to the third minima. (7)

(b) Each slit of a double slit has a width of 0·15 mm and distance betweentheir centres is 0·75 mm. What are the missing orders? (3·5)

(c) Explain why gratings with largernumber of lines are preferred? (2)

UNIT - II

Q.4. (a) State and explain Brewster's law. Use this law to show that whenlight is incident on a transparent substance at the polarizing angle,the reflected and refracted rays are at right angle.

(b) Explain Huygen's theory of double refraction with ray diagrams.

(c) Calculate the thickness of half wave plate for sodium light(A. = 5893 A), if ~l~ =·1-54 and the ratio of velocity of ordinary andextra ordinary wave is 1·OQ7. Is this crystal positive or negative?

(6)q)

(3·5).

Q.5. (a) Explain with the help of neat diagram, the construction and workingof Ramsden's eyepiece. In what way it is different from Huygen'seyepiece? (6·5)

(b) How are chromatic and spherical aberrations minimised in Ramsdenand Huygeri's eye piece? Why is Huygcn's eyepiece referred to as atheoretically perfect but experimentally negative eyepiece? (6)

2


UNIT -III

Q.6. (a) Can we obtain light amplification in the absence of stimulatedemission? (4)

. (b)' Explain why laser action can not occur without population inversionbetween atomic levels. (4)

"

(c) Describe qualitatively 4-1evellaser scheme. Do you think energyconservation is violated in lasing action? (4·5)

Q.7. (a) Explain the difference between the step-index fibre and graded-index fibre. ' (4)

(b) What are. different types of attenuation losses in an optical fibl~e?Explain dispersion mechanism in optical fibre. (4·5)

(c) A fibre cable has an acceptance angle of 30° and a core index ofrefraction of lA. Calculate the refractive index of the cladding. (4)

UNIT-IV

Q.8. (a) The quality factor of a damped oscillator is S'O x 104• After howmuch time its energy falls to 1~th of its initial value? The frequencyof oscillator is 300 Hz and, log e 10 = 2·30. '. (4)

(b) Establish equation of motion for the fbrced oscillation and find outits solution. (5)

(c) Show that the amplitude resonance frequency is smaller thanthenatural frequency of the system both in presence of damping aswellas in absence of damping. (3·5)

Q.9. (a) Show that no two velocities can be added to a value of more thanthe velocity (c) of light.

(b) An electron has an initial speed of 1-4 x 10811i/sec. How muchadditional energy must be imported to it for its speed to double?

(c) Show that space-time interval is Lorentz invariant.

(4)

(4)(4·5)

••••3


(Please write your Exam. Roll No.). Exam. Roll No , .

END TERM EXAMINA TIONFIRST SEMESTER (B.'TECH.) .. DECEMBER 2010

Paper Code ,: ETCH-105

Paper IV : 99105 ".

Subject .' Engineering, Chemistry

Time: 3 Hours MaximumMarks : 75 '

Note: Q. No.1 is compulsory, Attempt any Four out of the remaining Five questions.

Q. 1. Attempt any FIVE sub-questions. (Give brief of them) :

ja) Priming and foaming.

(b) Lime-Soda process.

(c) Proximate and ultimate analysis.

(d) Power Alcohol.\

(e) van derWaals equation.

(ry Heat of Neutralization.

(g) Catalysis by metal salts. (5x 3 =.15)

Q.2. (a) Give details of EbTAmethbd to determine thehatdness of water. (5)

(b) Write about the scale-sludge problems in boilers and its prevention. (4)(c), How do you remove silica from water? (3)

(d) What do you understand with colloidal conditioning of water? ' (3)'

Q.3. (a) Discuss the determination of calorific value of fuels by Bomb

Calorimeter. (4)(b) Write about the fractional distillation of petroleum crude oil. (4)

1 , P.T.O.


· (c) 0·72 gm ofa fuel containing 80% carbon, when burnt in a Bomb

calorimeter increased the temperature ofwater from 27·3°C to 29· 1°C.

If the calorimeter contains 250 gm of water and its water equivalent

is 150 gm calculatetheHf'V of the fuel. Report your answerin KJ / kg. (4)

(d) What do you 'Understand by catalytic cracking of fuels? (3)

Q.4. (a)' Report the postulates' of kinetic molecular theory of gases. (3)

(b) Comment on the Maxwell's law of distribution of molecular velocities. (4)

(c) Write about the non-ideal behaviour of real gases. (3)

(5)(b) Discuss Linde's Process for the Iiquifactionofgases.

Q.5. (a) Illustrate Hess's law of constant heat summation. (3)

(b) Given the heats offormation of CO(g), CO2(g) and H

20(g) are

- 110·5, - 393·8 and - 241·8 I\J mol:' respectively.

Calculate heat of the reaction CO2(g) + H

2(g) -) CO(g) + H

20(g) (4)

(c) State Kirchhoff's equation and reportitsapplications. . (3)

(d) Discuss Pb - Ag system Phase diagram and give its application insilver extraction. (5)

Q.6. (a) Report the characteristics of catalysts. (4)

(b) Discuss the mechanism of enzymes action in regard of catalysis. (5)

(c) Define phase, component and degree of freedom with suitable example.(3)

(d) Draw Phase diagram of Sulphur and explain it. (3)

••••

2


(Please write your Exam. Roll No.) Exam. Roll No .

END TERM EXAMINATIONFIRST SEMESTER (B. TECH.) - DECEMBER 2010

Subject: Manufacturing ProcessPaper Code: ETME - 107

Paper tn : 99107

Time: 3 Hours Maximum Marks: 75

Note: Attempt Five questions including Q. No.·1 which is compulsory. Internal choice is indicated.

Q. 1. (a)

(b)

(c)

(d)

(e)

(f)

(g)

What is a 'Pattern'? What are the different types of patterns?

What are the desirable properties of moulding sand?

What is the purpose of 'Riser'? What is a 'Blind Riser'?

Compare the advantages and disadvantages of 'Drop forging" and, ,

'Press forging',

Differentiate between 'Tapping' and 'Dieing' operations.

How do you specify a 'Hacksaw'?

What are the different types of flames used in oxy-acetylene gaswelding? Give their applications.

What is the advantage of P.C. arc welding over A. C. arc welding?

What is the purpose of coating on the electrode?

Name the materials which are availablein the form of 'sheets'. Howdo you specify a sheet? What is 'spring-back' in bending operation? (10x2·S)

(h)

(i)

(j)

Q. 2. (a) What is 'Pattem Allowance'? What are different pattern allowances?

Explain the purpose of (i) Riser, (ii) Gate, (iii). Core. (6·5)

(b) What are different casting defects? How do you testfor them? How

can they be avoided? (6)

.OR

1 P.T.O.


(a) What is 'Die-casting'? Name some products which are made by

die-casting. How does air from the mould cavity escape in die-

casting process? Why risers are not used in die-casting? Why

ejector pins' are required in die-casting?

(b) What is Chvorinov's rulein casting? Calculate the solidification time

for a 1000 mm diameter and 30 mm thick casting of aluminium if the

mould 'constant is 2 sec/rnm".

Q. 3. (a) Sketch and briefly give the purpose of following forging operations:

(i) Upsetting (ii) Fullering (iii) Swaging.I

(b) Describe 'drop forging' with a neat labelled diagram ..What are 'open

die forging' and 'closed die forging'?

OR

(a) Name four hand tools used in a fitting shop. Sketch them and give the

purpose for which they are used.

(6,5)

(6)

(6)

(6·5)

(6·5)(b) Describe the following with sketches:

(i) Surface Plate,· (ii) Marking Block, (iii) Centre Punch. (6) .

Q. 4. (a) How is 'welding' classified? Differentiate clearly between 'Soldering'

and 'Brazing'., .

(b) Differentiate between 'Arc welding' and 'Resistance welding'. Describe

'Submerged Arc Welding' process with a diagram.

OR

2

(6)

(6,5)


(a) Describe 'Gas Welding (oxy-acetylene)' with diagram. How is acetylene

gas made by a roadside welder? (6)

(b) What are different -types of welded joints? How do you prepare the

edges for welding? How are electrodes specified? (6·5):""

Q. 5. (a) Describe 'spinning' process with the help of a labelled diagram. (6·5)

(b) Why "do you use a 'Mallet' instead of a 'Hammer' for sheet-metal.

work? Name 'few tools and equipments used in sheet-m~tal work. (6)

OR(a) What are G I sheets? What is the' purpose of coating on the sheet? (6)

(b) Differentiate between 'Embossing' and 'Coining'. (6·5)

••••

i

3


(Please writeyour Exam Roll No.) EX(1m. Roll No .

END TERM EXAMINATIONFIRST SEMESTER (B.TECH.) - DECEMBER 2010

Paper Code: ETCS -109

Paper ID : 27109

Subject : Introduction to Computer

Time: 3 Hours Maximum Marks :75

Note : Attempt any Five questions in all. Q. No. 1is compulsory. Attempt any One questionfrom each unit. .

Q. 1. (a) Discuss the important features of 'micro, mini, mainframes and supercomputers.

(b) What is Telnet? How does it work?

(c) List the services provided by the Internet. Explain the structure ofa .URL.

(d) Explain how memory protection and process allocation is done byan operating system.

(e) Distinguish between internet and WW W . (5 x 5 = 25)

.. UNIT - I

Q.2. (a) Draw a block diagram' to illustrate the basic organization of acomputer system and explain the functions of various units of acomputer system. (6·5)

(b) (i) Find the hexadecimal equivalent of (1011001101)2 (6)

(ii) Find the decimal equivalent of(E6D1)J6(iii) Subtract 40-36 using 2's complement form.(iv) Add 10000001 + 0110000l.(v) Determine the hexadecimal equivalent of (5112) 10

(vi) Determine the binary equivalent of (SAF) 16

Q.3. Discuss the characteristics of computers. List out the variousapplications of computers.

Give the reasons as to why thebinary nti~fnbersystem is utilized formodern electronic digital computers.

(c) What are sign numbers and explain the conditions of overflow andunderflow by using the concept of 2's complement.

(6'5)

. (3) .

(a)

(b)

1

(3)

P.T.O.


Q.4.

UNIT - II

(a) What is ail operating system? What are the functions of operatingsystem?

(b) Explain the procedure of mail merge in MS WORD.(6)

(6'5)

'(6·5)

(6)Q.S; (a) Compare and. contrast various operating systems.

(b) Explain any One modem GUI based operatingsystem.

Q.6.

. UNIT;. III

(a) Explain theuse of AUTOCAD f01;engineering drawing practices.

(b) Explain 2D drafting in AUTOCAD with examples.

(6)

(6'5)

Q.7. Write short notes on the following:(a) Solid-modeling(b) Rendering(c) 2D drafti ng

UNIT-IV

Q.8. (a) Write HTML code for creating the following table: . (6)

Adm. No. Name Class DOB Percentage

AIOI Sujata 12A 09108/1984 78

AI02 Anju 12A 12/0711983 82

Al03 Ananth 12C 07/08/1984 67

(b) What are unordered and ordered lists? Explain with the help of anexample. (3)

(c) 'What are key issues and challenges in designing a website? (3·5)

Q.9. (a) Explain in detail: (2x3=6)1. Different Style Sheets2. Different tags and attributes to create HTML table3. Image Maps

(b) Write a descriptive note on Search Engines. (3)(c) How are images and hyperlinks created in HTML?Explain with an

example, (3·5)

••••2


(Please write jour Exam. Roll No.) Exam, Roll No .

END TERM EXAMINATIONFIRST SEMESTER (B. TECH.) - DECEMBER 2010

Paper Code : ETEL - 111

Paper ID : 99111

Subject: Communication Skills - I

(Batch :2004 - 2010)

Time:3 Hours. Maximum Marks: 75

Note: Attempt all questions, as per internal choice given if any.

Q. 1. . Do as directed :

(a) Fill.in the blanks:

(i) The audience (is I are) restless .:

(ii) The committee of scientists (was I were) from severalscientific disciplines.

(iii) A number of test tubes ; (is I are) on the table ..(iv) ~ : (Its! It's) fur is fuzzy.'(v) A dog knows '.(its I it's) master.

(5)

(b) Correctthe following sentences:(i) John and myself will go home.

(ii) .The sugar is sweet.

(iii) For sale, carowned by lady with dent inrear.

(iv) Inside of the park, many animals lived .

.(v) The argument was between he and 1.

(vi) The. group Was comprised of a manager and five programmers.

(vii) The consensus of opinion is that the job will not be entirelyfinished until October.

(viii) All of the necessary decisions were not included in thefunctional specification.

(ix) The boss told Jones he had problems.

(x) A majority of the' shareholders wants the merger.

(10)

1 P.T.O.

-------- - ---,-. --~.--.,-- .. ~-


(c), Add suffixes to .the following words to transform them into nounsoften used in technical writing : (Any 5) (5)

(i) accurate (ii) drain .

(iv) assist "'-,(v) construct

(iii) maintain

- (vi) - emit

(d) Read the passage below and answer the questions: (5)Animals, are great builders, they use simple materials but employ- . -.sound engineering principles. Men have used suspension bridges

_made of ropes; steel and concrete which bear loads in tension. Theweb of spiders provides the mostvivid example of animal structuresbuilt entirely in tension. Spider-web silk is so strong that manyspecies of birds use ~tto build their nests. Unlike -steel, .silkcanstretche to more than twice its original length before breaking.Beavers, too, are natural engineers. They use tree branches toconstruct dams, the divided end is pressed into the walls and thismakes the dam strong enough to withstand the pressure of water.

Constructing a very thick wall is uneconomical. Strength couldalso be provided to a thin wall by providing support or by makingthe base wide. The nest of the termite Amitermes meridionalis ismote than two meters high with a wide base, which 'tapers at thetop. This ensures greater resistance to wind forces.

1. Write a suitable title for the passage.

2. Which three aspects of engineering are touched upon in thispassage?

3. Wha-t do spider-web silk and bridges have in common?

4. What can we learn from a spe~ies of termites?

5. Pick out the words which are the antonyms of -

-(a) thin

(b) -economical

2


Q. 2. Explain whether the verbs and infinitives in each of the following sentencesconvey the right meaning; if not, change them to a better form ': (2x 7= 14)

1. I gave one quarter to Ann, meaning, on my return, to have dividedwith her whatever might remain - De Quincey.

~..

2. I can't sketch" The Five Drapers," ... but can look and be thankfulto have seen such a masterpiece. -', Thackeray.

3. He would, have-done more wisely to have left them to find their ownapology than .to have given reasons which seemed paradoxes.- R. W. Church.

4. The propositions of William are stated to have contained a propositionfora compromise. -' Palgrave.

5_ But I found I wanted a stock of words, which I thought I should haveacquired before that time. - Franklin.

6. I could even have suffered them to have broken Everet Ducking'shead. - Irving.

7. ' I had hoped never to have seen the statues again.- Macaulay.

Q. 3. (a) Give the antonyms of thefollowing words: (Any 5)

(i), integral (ii) heap, (iii) accomplice

(iv) regal (v) abrupt (vi)' abundant

(5)

(b) What do you understand by Indianisms? Give examples to explain. (7)

'OR

Make sentences with the following phrasal verbs: (Any 7)

(i) put up with (ii) blow up (iii) do away with

(iv) put on (v) come across (vi) come clean

(vii) cut across (viii) cut through

3P,T.O,

--- __ '---,--,--,==-=- __, _--~ ~, '- __ -~__-~--_ -~,-----C'----


Q. 4. (3) Give the technical description of any One of the following: (7)A computer, a CD, a pen-drive, a pair ofpliers.

- (b) Punctuate the following : (5). (i) The children) books were all left in the following places; Mrs

Smith's 'room, Mr Powell's office and the caretaker's cupboard.(ii) Sarah's uncle's car was found without its wheels in that old

derelict warehouse.(iii) The potion ~ontained : cheese, snails and lucozade.(iv) My wife a wonderful woman makes a delicious curry.(v) , "That cake looks delicious," she said, "Where can I get the

recipe?"

Q. 5.· Answer any TWO of the following questions : (6x2=12)

(i) How does C. P. Gilmore begin his article, "After 63 Years, Why are

they still Testing Einstein?" and in which tense? Explain in detail. '

(ii) In "Star Wars: The Leaky Shield," Carl Sagan writes wihtout the

formal stiltedness typical among academics and scientists. Discusswhy and the reasons he gives for this style.

(iii) Why and how did Bill Moss design tents?

(iv) Describe Michael Rogers' reporting on 'eclipse freaks' in

"Totality - A Report".

•••

4

I~.

(Plealltt write your &cam Roll No.) &cam Roll No, ••••••••••••••••••••••

END TERM EXAMINATIONFIRST SEMESTER B.TEcH. DECEMBER 2009

Paper Code: ETMA-101 Subject: Applf.ed MathemczticsPaper ID: 99101 (Batch: ::a004·::a009)Time : 3 Hours Maximum Marks :75

Note: Q.No.1 is compulsory. Attempt one question from each unit. I

(3)

(3)

(3)

(3)

(3)

(3)

(3)

If the number z-1 is purely imaginary prove that Iz I = I,z+l

, ) . d2 dIfy = log \x+.Jl +x2 , prove that (1+ x2) -{+x~ = O.dx dx

Using Cayley-Hamiton theorem. Find AS if A = [1 2].2 -1

Trace the curve 3 ay2 = x (x- a)2.Solve the differential equation dy = (x - y) + 3 .

dx 2(x-y)+5 .Find the asymptotes of the curve y3- x2y- 2xy2 + 2x3 -7xy + 3y2+ 2x2 + 2x + 2y +1 = O. (3)

'" (_I)o'lnExamine the character of the series L( ) . (3)oel 2n-}

Expand tan x in powers or( x - : ) upto first four terms.

2 2If x + iy = sin (A+ iB), prove that x 2 + ,y 2 - 1.

. coshB smhB

(b)

(c)

(d)

(e)

(f)

(g)

(h)

(i)

Q.l (a)

UNIT-I

Q.2 (a)

(b)

If x2-2x cose + 1 = 0, show that x2n- 2xncosne+1=.0.

E . h fth· ~ ~xamme t e convergence 0 e senes .t..J ( ) ( ) •0=1 2n + 2 2n + 4

(6)

(6)

Q.3 (a)

(b)

Prove by the use of the De Moivres' Theorem that the roots of

the equation (x-l)4 + x4 = 0 are ~ [1+ icot (2m; 1)n], where m has

the values 0, 1, 2, 3. (6)'" n' 2n

Test the convergence of the series L-'-n-' (6)n=1 n

P.T.O.


[-2-]

UNIT-II

QA (a) Evaluate f sin (,x dx . (6)

(b) For the curve x = a(t + sin t), Y = a( 1 - cos t) show that p= 4 acos .t/2. (6)

(6)

Q.5 (a)

(b)

Q.6 (a)

(b)

Find the area of the region enclosed between the two circles x2 +y2 =1 and (x-1)2 + y2 = 1. (6)If y = sin (m sin IX), prove that (1 - x2) Ynr2::: (2n+1)xYnrl + (nL

m2) Yn- (6)

UNIT-III

Find the value of a, b for which the equations x + ay + Z ::: 3, x +2y + 2z = b, x + 5y + 3z '""9 are consistent, when will theseequations have a unique solution. (6)

A~-r~1 42 =-Find the rank of the matrix A. - .!.

6 5

Q.7 (a)

(b)

Using row operations, compute the Inverse of the matrix

A =[ ~ °2 ~I-I 1 -II

..J

Show that if Ie be an eigen value of a non-singular matrix A,

show that JAI is an eigen value' of the matrix adi.A.Ie . .

UNIT-IV

(6)

(6)

Q.8 (a)

(b)

Q.9 (a)

(b)

d ;<.Solve -l+r::: y- 2.

. dx x xSolve by the method of variationd 2y dy . x

-- - 2 - + y ::: e log x .dx 2 dx

Solve (D3+1) y = (eX+ 1)2.

2 d 2 Y . dy . . ( ) )Solve x ~-) + x --- + y ::: Sill log x .dx - dx

of parameters

(6)

(6)

(6)

(6)


(Please write your Exam Roll No.)

END TERM EXAMINATIONExam Roll No•.....•.•.••..•.••.•...

FIRST SEMESTER B.TECH. - DECEMBER 2009Paper Code: ETPH-103 Subject: Applied Physics-IPaper ID: 99103 __ ~__~ ._______ (Batch: 2004-2009)Time: 3Hours Maximum Marks :75

I Note: Attempt any five questions in alL Q.No.l is compulsory and is of 25 marks.Q.Nos 2-9 are of 12.5 marks each. Attempt one question from each unit. Scientificcalculators are allowed.

Q.1 (a)

(b)

(c)(d)(e)

(f)(g)(h)

(i)U)(k)

(1)

Q.2 (a)

(b)

(c)

Q.3 (a)(b)

(c)

Two waves of same frequency have amplitudes 1.00 and 2.00.They interfere at a point where their phase difference is 60°.What is the resultant amplitude? (3)The interference fringes produced in the Newton's ringexperiment are real or virtual? ,Justify. (1)Define temporal coherence. (2.5)Distinguish between the spontaneous and stimulated emission. (3)Define numerical aperture of an optical fibre. What is itsphysical significance? (2.5)Draw a labeled ray diagram of Huygen's eye piece. (1)Enunciate Malu's law. (1)Write the equation representing the time dilation. Depict it on atime vs. velocity graph. (3)Give two examples of non central forces. (2)Define resonance in the context of SHM. (2)Draw a labeled ray diagram depicting the polarization ofelectromagnetic waves by a Nicolprism. (2)Give the main conclusion of the Michelson Morley experiment. (2)

Describe the Young's double slit experiment. What is itsimportance in physics? (.5.5)A soap film, suspended in air has thickness 5 x 10-3 cm and isviewed at an angle of 35" to the normal. Find the wavelength oflight in visible spectrum which will be absent for the reflectedlight. The )...l for the soap film is 1.33 and the range of the visiblespectrum is 4000 A to 7800 A. (4)Draw a labeled ray diagram depicting interference by a biprism. (3)

Distinguish between the Fresnel and Fraunhoffer diffraction. (4)Define dispersive power. Set up an expression for the dispersivepower of a prism. (4.5)A diffraction grating has 1.26 x 10'1 rulings uniformly spreadover width w = 25.4 mm. It is illuminated at normal incidenceby blue light of wavelength 450 nm. At what angle to the centralaxis do the second maxima occur? (4)

P.T.O.


[-2-]

UNIT-II

QA Discuss in details the principle, construction and working of anelectron microscope. (12.5)

Q.5 (a)

,(b)(c)

Light traveling in water (~l = 1.33) is incident on a plate of glass().l = 1.53). At what angle of incidence will the light be fullypolarized? (4)Defme specific rotation. Is it a temperature dependent property? (4)'A 10 cm long tube contains 10(% sugar solution and producesan optical rotation of 13.2". Calculate the specific rotation. (4.5)

UNIT-III---

Discuss in brief attenuation and dispersion C)felectromagneticradiation in optical fibre. Discuss specifically for step index andgraded index fiber. (7.5)Write a short note on optical communication. (5)

Q.6 (a)(b)(c)

Q.7 (a)

.~ ,

~/(b)

What ate essential conditions for lasing action?Explain the construction and working of a He-Ne laser.What are Einstein coefficient.s"? Discuss in brief theirsignificance.

UNIT-IV

(3)(5.5)

physical(4)

What·. are inertial frames of reference"? Discuss' the basicpostulates of a special theory of relativity. Mention some of thesignificant consequences. . (9)At what speed a body must move so as to have its massdoubled? (3.5)

Q.8 (a)

(b)

--""1Q.9 (a)

(b)

Set up the equation of mot.ion for a damped SHOoheavily, lightly and critically damped conditions.Give main characteristics of central forces.

Discuss the(9)

(3.5)

************Northern India Engineering College, New Delhi

(Please write your Exam Roll No.)

END TERM EXAMINATIONExam Roll No•.•••.••.•••.•.•.•••..•

Q.1 (a)

(b)(c)

(d)

(e)(f)

(g)

(h)

(i)Ul(k)

(1)(m)

FIRST SEMESTER B.TECH. - DECEMBER 2009Paper Code:ETCH-lOS Subject: Applied Chemistry-IPaper ID: 99105Time: 3 Hours Maximum Marks :75Note: Attempt any five questions in all. Q.No.l is compulsory. Attempt one questionfrom each unit.

For alkaline boiler feed water the recommended phosphate is (i)Na,P04 (ii) NaH2P04 (iii)Na2HP04 (iv) None of these. (1)Hydroxide and bicarbonate ions can not exist together in water why? (2)Carbonate conditioning is not suitable for high pressure boiler,explain. (2)Catalytic cracking of heavy oil is carried out to get better quality of (i)Gasoline (ii)Kerosene oil (iii)Diesel oil (iv)Lubricating oil. (1)Explain the term passivity. (2)In acidic solution the corrosion rate can be reduced by using organicinhibitor like amine, explain. (2)Differentiate between low and high temperature carbonization. Whatis coke? (2)Analysis of flue gases is done by (i) Boys gas calorimeter (ii)Orsat apparatus (iii)Retort (iv)Bomb calorimeter. (1)What is pitting corrosion? (2)Iron corrodes faster than aluminum, why? (2)Name the most dangerous pollutant emitted in air during incompletecombustion of fuels. (1)How do plants control pollution? (2)Given the following aqueous solution at 300 K (i) 1 M sucrose (ii) 1 MNacl (iii) 1 M Bach (iv) 1 M Phenol. The electrolytes are completelyionized while phenol is fully dimerised. Which solution would showhighest value of the crystalline property? Explain. (3)

(n) Addition of a non volatile solute lowers the freezing point and elevatesthe boiling point, why? (2)

UNIT-I

Q.1 (a)

(b)(c)

Q.2 (a)

(b)

(c)

What are ion exchange resins? Discuss their applications in watersoftening. How are spend reins regenerated? (5)Differentiate betweens scale and sludge. (2)Water containing CaC03 120 mg/litre, MgC03 84 m/litre, Mg (N03)274 mg/litre, CaCh 111.0 mg/litre and KCI 100 mg/litre is to treatedwith lime soda. Calculate the amounts of chemicals required for thetreatment of 5000 litres of water. (5.5)

ORWhy do we express hardness of water in terms of calcium carbonateequivalent? (2)Describe the decimalization process of softening of hard water. Whatare its advantages over zeolite process? (4)Water containing following per litre is to be treated with lime soda.Ca(HC03b - 162 mg, Mg(HC03b - 73 mg, MgCh - 55 mg, CaS~ - 136mg, NaCI - 580 mg. find the temporary and tota! hardness of thewater and the quantity of lime soda per 10,000 litres if lime is 90%pure and soda is 98% pure. (6.5)

P.T.O.

~\


[-2-)

.~

._/ Q.3 (a)

(b)

(c)

QA (a)

(b)

(c)

UNIT-II

What is meant by calorific value of fuel and how the calorific value ofa solid fuel determined? (3.5)1.0 g of a fuel containing 80% carbon when burnt in a bombcalorimeter increased the temperature of \yater from 25.7°C to 27.5°C.If the calorimeter contains 280 g of water and its water equivalent is120.0 g. Calculate the HCV of the f'JeI. . (5)Write the chemical composition of petroleum? How is fractionaldistillation useful for petroleum? (4)

: ORWhat is the significance of Octane number and Cetane number andfor which these are used. How can these be improved?' (3)A producer gas has the following percentage composition by volumeCH4 ,,; 3.5%, CO = 25%, H2 = 10.0%, C02 = 10.8%, N2 = 50.7%.Calculate the theoretical quantity of air required per m3 of the gas and% composition of products of combustion including water vapoursformed. (6)What is the significance of ultimate analysis of coal? How can thisanalysis be carried out in laboratory. (3.5)

UNIT-III

Q.5 (a)

(b)

(c)

Q.6 (a)

(b)

(c)

What are common pollutant ion water and how do they pollute water?Describe the tertiary treatment of waste water. (4)What is green house effect? How is it caused? What are its adverseeffeGts? (4.5)Write informative notes on biochemical waste management. (4)

ORWhat are the common pollutants of air? Discuss their effects on theenvironment. Explain the control of its by electrostatic precipitatorand wet scrubber. (4)Describe briefly the advantages and problems associated withsanitary land filling. (3.5)What are the major types of chemical waste the we are generallyconfronted with? What are the various entry routes for them to escapeinto the environment? (5)

UNIT-IV

(4)(4)

by(4.5)

What are laws of oxide film growth during corrosion?Explain dry corrosion and its mechanism.

•What is electrochemical corrosions? How is corrosion preventedcathodic protection?

ORWhat is Henry's Law? If Pi is the vapour pressure of the solvent andKH the Henry law constant for the solute, write the expression forideal pressure (Pt) over the solution as a function of x, the molefraction of the solute in the solution: Assume ideal solution. (4)Under what conditions abnormal molar masses of solutes areobtained from measurement of colligative properties? How is Van'tHoffs1factor, 'i' related to the degr~e of association and dissociation ofa solute. (4)

(c) What is fractional distillation? Describe the fractional distillation atconstant pressure of binary liquid mixture showing ideal behaviour. (4.5)

Q.7. (a)(b)(c)

r .~. Q.8 (a)

1-·. I

I(b)

************


(Please write your Exam Roll No.) Exam Roll No.••..••.....••...••••.•

END TERM EXAMINATIONFIRST SEMESTER B.TECH. - DECEMBER 2009

Paper Code:ETME-l07 Subject:Manufacturing ProcessPaperID:99107Time: 3Hours Maximum Marks :75Note: Attempt five questions including Q.No.l which is compulsory. Internal choiceis indicated.

(lOx2.5)Name the most commonly used engineering material in themanufacturing, justify the answer.Compare the advantages of two most commonly used primarymanufacturing process.Which is the last part to be solidified in the castingsolidification, justify your answer.What is the function of a cupola furnace, justify your answer.Differentiate between forging and forgeability.How does gas welding differs from arc welding?Why is flux not required in electrical resistance welding?Justify.Which joint is strongest: solder joint, gas welded joint, brazedjoint, metal arc welded joint? Justify your answer.What is a hacksaw? Explain the usefulness of teeth setting ahacksaw blade.What is the difference between embossing and coining?

Differentiate between a wooden pattern, wax pattern andpolystyrene pattern. It is commonly said that pattern is biggerthan the actual size of the final product size. Justify youranswer with diagrams. (3+3.5=6.5)

(b) Define mould, core, core-prints and chaplets. Also differentiatebetween moulding sand and core sand. (4+2=6)

OR(a) Explain with a sketch centrifugal casting process. Describe the

casting technique you would like to recommend for sanitarypipes with diagram. (3+3.5=6.5)

(b) Explain hot chamber die casting process with a sketch. (6)

Q.l (a)

(b)

(c)

(d)(e)(f)(g)

(h)

(i)

(j)

Q.2 (a)

Q.3 (a)

(b)

(a)

List five basic tools required for forging operation, with neatlabeled diagrams. Explain four basic operations of forging withneat labeled diagrams. (2.5+4=6.5)Differentiate between drop forging and press forging. Describe inbrief, the press forging with neat labeled diagram. (3+3=6)

ORDraw a neat labelled diagram of an engineer's try-square.Explain the procedure of checking its correctness. Explain theprocedure of its use in bench work and fitting section. (2+2+2.5=6.5)

P.T.O.


Give classification of files? Differentiate between rough files andsmooth files. (3+3=6)

Differentiate between a mallet and a hammer. Make a sketch ofa mallet and justify the use of mallet for sheet-metal work. (6)Explain the spinning process with the help of a neat labelleddiagram. (6.5)

Draw neat labeled zones of three oxy-acetylene flames,indicating the maximum temperature region with respectiveapplications. (3+3.5=6.5)Diff~rentiate between metal arc welding and brazing. Explainthe importance of edge preparation, filler metal and flux in brief.(3+3=6)

ORClassify welding processes. Identify and discuss' the joiningprocess for electronic components on the printed circuit board. (3+3.5=6.5)Discuss the procedure with neat labeled diagram and the salientfeatures of submerged arc welding. (6)

(4)(2)

standard(6.5)

[-2-]

ORExplain the working of a vice with a sketch.What are the standard ::,pecifications for sheets?Na..."'l1evarious metals used for sheets and give thespecification of GI Sheets.

· /

(b)

QA (a)

---····1(b)I

(a)

(b)

Q.5 (a)

(b)

(a)(b)(c)

************

___····iI


(Please write gour Exam Roll No.) Exam Roll No..••.•.•....•••.••.....

END TERM EXAMINATIONFIRST SEMESTER B. TEcH. - DECEMBER 2009

Paper Code:ETCS-109 Subject: Introduction to ComputerPaper ID: 27109Time: 3 Hours Maximum Marks :75Note: Attempt any Jive questions in all. Q.No.1 is compulsory. Attempt one questionfrom each unit.

(5)(5)

for(5)(5)(5)

Discuss the importance of ICT in the area of rural development.Define as. Discuss various popular as.What is Auto CAD? Discuss the importance of Auto CADengineers.What is www? Differentiate between HTMLand DHTML.Define and explain telnet.

Q.1 (a)(b)(c)

(d)(e)

UNIT-I

Q.2 (a)

(b)

Q.3 (a)

(b)

Convert the following: - (6.5)(110110)2 = ( ? )10(245)8 = ( ? )2(AF2)16 ( ? )2(11101111)2 (?)16(24)10 ( ? )8Explain von neuman architecture of computer system. (6)

ORDo the following conversion (6.5)(11.10)2 = (?)1O(45)8 = ( ? )2(-246.24)10 = ( ? )8(7624.21)8 ( ? )2What do you mean by storage system? Explain hierarchy ofstorage system. (6)

UNIT-II

(5)multi-user and

(5)(2.5)

QA (a)(b)

(c)

Q.5 (a)(b)

What is client server technology? Explain.Differentiate between multiprogrammingmultiprocessing.What is DOS? Explain.

ORDiscuss the advantage of MS-Excel over MS-Word.Discuss the architecture of UNIX.

(6.5)(6)

UNIT-III

Q.6 (a)(b)

Q.7 (a)

What 2D drafting? Explain. (6)Define native file format of Auto CAD. Discuss various fileformat of Auto CAD. (6.5)

ORDiscuss various commands for creating 3D object in Auto CAD. (6)

P.T.O.

~,


.. ~~~. ..!<," ..,

[-2-]

(b) Define the following: - (6.5)(i) Dview (ii) DWg(iii) CAL (iv) EDGESURF(v) GRAPHSCR

UNIT-IV

Q.8 la) Define following: - (6)(i) FTP (ii) SMTP(iii) HTTP (iv) TCPjIP

(b) Define the follow]ng: - (6.5)(i) Search Engine (ii) Gopher(iii) Internal Protocol

ORQ.9 (a) Explain' audio and videa conferencing. (6)

(b) Discuss various web server. (6.5)************


(Please write your &cam Roll No.)

END TERM EXAMINATION&cam Roll No••.•...•.••..••••••.••.

FIRST S£MESTER B. TECH. - DECEMBER 2009Paper Code:ETEL-111 Subject:Communication Skills.lPaperID: 99111 (Batch: 2004·2009)Time: 3 Hours Maximum Marks :75

Note:Attempt all questions.Part lA' is compulsory and carries 25 marks. ·1

PART-A

Q.1 Do as directed: - (10)(a) Rectify the errors, if any, in the following sentences: -

(i) Her family had great difficulty to get her transferred toanother hospital.

(ii) People say that she died with pneumonia.(iii) I am studying for a MAin history.(iv) Luckily, only a person was injured.(v) There must have been above twenty cars outside the

house.(vi) Anyone absent at work has to get a medical certificate.(vii) The country's main problem is economic.(viii) The tree was a great comfort during midday scorching

sun.(ix) She has spent most of her life helping the poors.(x) I'll telephone you when I will reach London.

(b) Use any five of the following phrasal verbs into meaningfulsentences so as to bring out the difference in their meaning: - (2.5)(i) come about (ii)come across (iii) come by (iv)come out(v)come round (vi)come to (vii) come up

(c) Add or delete a punctuation mark in the following to makemeaningful sentences: - (2.5)(i) We all agreed that jovial, red-faced, bright-eyed uncle

Onkar, was the life and soul of the party.(ii) My wife who is in Calcutta has written to me.(iii) She asked me why I was laughing.(iv) He stays at 39, Akbar Road.(v) I admire his intelligence I detest his character.

(d) Based on your reading of the texts prescribed, answer any twoof the following questions in about 150 words:- (5x2=10)(i) "Testing relativity is a tough way of making a living"-

Explain.(ii) "Most modern tents carry to Moss imprint"-Explain.(iii) Gist of Arthur Fisher's concept to Chaos.

PART-B

Q.2 Do as directed: - (2x2=4)(a) Distinguish between (do any two) of the following with suitable

ex~ples: -(i) Homophones and Homonyms(ii) Idioms and Phrasal Verbs(iii) Misappropriation and Redundancy

P.T.O.


For

(4) Hold(3) Appease(2) Infect

(ii)

(v)

(ii)

(ii)

[-2-]

Identify the words from the given options opposite in meaning tothe words in the italics: - (2)(i) He will not allow this defiant attitude.

(1) encouraging (2) favourable(3) dull (4) submissiveYour poetry appears to the effete to me.(1) difficult (2) robust (3) familiar (4) strange

(iii) I can hear this discordant note.(1) pleasant (2) agreeable (3) melodious (4) harmonious

(iv) The season has chang~d; flowers have withered.(1) faded (2) bloomed (3) disappeared (4) smiled

Identify the word nearest in meaning to the word/ phrases initalics: - (2)(i) He threw cold water over the project that I had prepared:

(1) rejected (2) cleared (3) discouraged (4)encouragedA speech made without preparation:(1) debate (2) elocution (3) unprepared (4)extempore

(iii) We kept our fing,ers crossed till the final results weredeclared:(1) waited expectantly (2) felt scared(3) kept praying (4) kept hopeful

'(iv) One who is expert injudging art, music etc.:(1) expert (2) connoisseur (3) musician (4) artiste

Choose the word from the alternative that is similar in meaningto the word given in the CAPITAL.1etters. (1.5)(i) OSTENTATION

(1) Deception (2) Pageantry (3) Declaration (4) EquanimityMUSE(1) Ponder

(ii) I OFFICIOUS:(1) Careful (2) Meddling (3) Enthusiastic (4) Personnel

Fill the blanks choosing the correct alternative from .the choicesprovided: - (3)(i) . She shows great flair ~~ mathematics.

(1) For (2) At (3) In (4) With.(ii) ,Our new teacher is very keen _~ __ punctuality.

(1) Of (2) In (3) On (4.). For(iii) The Prime Minister congratulated the Indian cricket team

_____ -its great victory.(1) On (2) At (3) Over (4)

(iv) He was sent to prison for a month.(1) A (2) An (3) The (4) No ArticlePlease wait, I __ ~too.(1) Will come (2) Am coming (3) Come (4) Shall Came

(vi) The train before we reached the station.(1) Left (2) Has left (3) Had left (4) Leaves

(b)

(c)

(e)

(d)," ,

: /iII-

i'

Q.3 (a) Each of the following essays is divided into four sections: A, B, Cand D. One of the sections/parts may have an error in it. Pointout the section that may contain the possible error. (5)

P.T.O.


[-3-](i) It is (A)a three-years (B)degree course (C). No error (D)(ii) The villagers (A} sat under fB}the shadow of the tree (C).

rio error (D).(iii) Either Ram (A) or Shyam (B) will giye their book (C). No

error (D).(iv) Those five friends (A),who are sitting there (B), love each

other (C). No error (D).(v) Hardly (A) had I entered the room (B) then the bell rang

1QL. No error (D).(b) Do as directed (any two): - (2.5x2=5)

(i) Differentiate between complex and compound Sentence.(ii) Explain the concept of double comparison and two fold

comparison (in the context of adjectives).(iii) Explain the meaning and significance of conditional

clauses in scientific writing.(iv) What is the significance of question tag?

(c) Read the following sentences carefully and identity thegrammatical function of the word italicized:- (2.5)(i) They play in the play ground.

(1) Verb (2) Adjective (3) Adverb (4) Noun(ii) The boy ran after the ball.

(1) Preposition (2)Adverb (3) Conjunction (4) Adjective(iii) He studied after the guests left.

(1) Preposition (2)Adverb (3) Conjunction(4) Adjective(iv) Can't you find a leak in the tank?

(1) Verb (2) Adjective (3) Noun (4) Adverb(v) She extended me a warm welcome when I visited her after

two months.(1) Verb (2) Adjective (3) Noun (4) Adverb

(2.5x2)Summary and Abstract

(1.5+1=2.5)(ii)

Distinguish between the following: -(i) Description and DefinitionExplain the following: -(i) Topical sentence in a paragraph(ii) Reading between the linesRead the following passage and answer the questions thatfollow:- (2.5)The greatest enemy of mankind, as people have discovered, isnot science, but war. Science merely reflects the prevailingsocial forces. It is found that, when there is peace, science isconstructive; when the there is war, science is perverted todestructive ends. The weapons which science gives us do nonecessarily cause war; they make war increasingly terrible. Tillnow, it has brought us to doorstep of doom. Our main problem,therefore, is not to curb science but to stop war-to substitutelaw for force, and international government for anarchy in therelations of one nation with another. That is a job in whicheverybody must participate, including the scientists. But thebombing of Hiroshima suddenly woke us up to the fact that wehave very little time. The hour is late and our work has scarcelybegun. Now we are face to face with an urgent question-"Caneducation and tolerance, understanding creative intelligence

P.T.O.

(c)

Q.4 (a)

(b)


(iv)(v)

•

(d)

[-4-]

run fast enough to keep us abreast with our own mountingcapacity to destroy?" that is the question which we shall have toanswer one way or the other in this generation. Science musthelp us in arriving at the answer, but the main decision lieswithin ourselves.

Questions:(i) Why the real enemy of mankind is not science but war?(ii) How can we stop war?(iii) What do the phrases - 'bring to the doorstep of doom' and

'keep us abreast' mean?Give antonyms of 'anarchy and 'scarcely'.What, according to the Writer, is the main problem we arefaced with give a title to the passage?

Abstract the following passage for its core meaning: - (2.S)The real choice for the modenl man is not between conservativedogmatism and rationalistic modernism, but between a matureand an immature religious faith. 80th dogmatism and extrememodemism suffer from the same fundamental error. They overemphasize the intellectual element in religion. Religion can offerno intellectual certainty. It can no longer provide the unifiedoutlook on life which characterized the medieval period. It mustleave' to science the undisputed right of judgment in all matersof fact: which properly fall within here province. Of coursereligion has its intellectual aspect. The affirmations ofexperience must be expressed in intellectual terms. Such effortsof interpretation must use the intellectual language of the age,but they can be nothing more than a fumbling effort to explainthe inexplicable, to comprehend the incomprehensible. Man'sdoctrine of God can and must change with changing Knowledge,but the spiritual vision of God grows richer and truer for allthose who honestly and fearlessly follow the religious was of life.The real need of our times is not intellectual but spiritual. It isthe need for a truly, spiritual faith which will refuse to cling toany particular beliefs though fear or a desire for comfort orsecurity-a faith that is prepared for change and growth even atthe c<?stof suffering.

,'":/

Q.5 Critically examine Carl Sagan's "Star Wars:Michael Rogers "Totality - A Report" for: -(i) Organization of argument(ii) Writing style(iii) Use of language

************

I;) _. _

The Leaky Shield or(7.5+2.5+2.5)


end term examination'note: (a) attempt any five questions in all, (b) question no..1 is...

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