:?:l

University Roll No.

B.Tech. (EC) Final Year, VII Semester, Session 2013-14Second mid Term Exam

Time -1&1/2 hrs Satellite Comrnunication @CE-407) Max Marks: 20

Notes1. Answer four questions from Section A, any two from Section B and any two from Section C.2, All parts of a question (a, b, etc") should be answered at one place.3. Answer should be brief and to-thepoint and be supplementd with neat sketches.4. Any missing or wrong data may be assumed suitably giving proper justification.5. Figurcs on the right-hand side margin indicate the marks.6. Assurne the avcrarge radius of thc carth is 6378.137 km and Kcplcr's constant has the value 3.986004418 x

los knlr/s2.

SECTION- A

Note: Answer any FOUII questions.

I. Define tropospheric scintillation.

It. What is satellite switched TDMA system?

III. Explain the role of CBTR in TDMA preamble.

IV. Define processing gain in spread spectrum system. Calculatc proccssing gain if chip rate is 3OMcps and data rate'

is 2Kbps.. V. What are the values ol'tlrircl order lM products for the frequencies l'l &'t2'!

Vl. An earth siation at sca lcvel comnrunicates at an elevation angle of 35" with GtlO satellite. The melting level

hcight of tlrc startilirrnr min is 3 krn. l.-ind the path attenuation il'thc spccilic attenuation is 2 dB/Km.

SEC'TION- I}Notc: Arrswcr any 'l'W() Qucstions 3+3=6

l. l)rlw & cxpluirr tho litnrc structurc ol'thc US'l'l 24 channcl systcrn. llxplain thc technique of frame

synchronization in this system.

ll. Explain the Faraday rotation in the atmosphere.

lll. Assunrc that tlrc l'DMn systcrn uses a 125 prs fiame time. Find the number of channels that each earth station

. carl send within the TDMA tiame when

(a) No time is lost in overheads, preambleS, and the like.(b) A 5 ps preamble is added to the beginning of each earth station's transmission.(c) A 5 ps preamble is added to each station's transmission and 2 ps guard band is allowed

between every transmission

4xl4

Page 1 of2

SECTION. C

Note: Answer any TWO questions. 5+F10

L Explain the basic principle of spread sp."tru- transmission & reception with an example? List the desirable

properties ofPN code.

il. Three identical earth stations with 500 W saturated. output power transmitters access a 36lvftIz bandwidth

transponder using FDIqA The transponder saturated output power is 40 W and it is operated with 3 dB

output backoffwhen FDMA is used. The gain of the transponder is 105 dB in its linear range. The bandwidttt

ofthe earth stations signals are

Station A : 15 Mllz, Station B: l0 MHz Statipn C: 5 lr'lHz

Find the power level at the output of the fiansponder and at the input of to the transponder, in dBW for each

earth station signal, assuming that the tansponder is operating in its linear reglon with 3 dB backoff. Each

earth station must transmit 250 W to achieve an output power of 20 W from the fiansfonder. Find the

transmit power for each earth stirtion when the transponder is operated with FDMA by the three earth

stations.

III. Discuss the techniques of qtrantiffing depolarization using different parameters

Page2ot2

't

University Roll No..GLA University, Mathura

Course: B.Tech IVth Year, II- Mid Term Examination,2013-14Subject Digital Signal Processing (ECE402)

Time:90 MinutesNotes:

Max.Marks:20

1. Answer any FOUR Questions from Section A, TWO from Section B & TWO from Section C.2. All.questions of the particular section should be answered collectively at one place.3. Andwer should be to the point & wherever required, be supplemented with neat sketches.4.Any missing data may be assumed suitably giving properjustification.5. Figures on the right hand side margin indicate marks.

Section A 4x14Note: Attempt 4n;.r FCUII, questions . :

(D what are different type filters based on the range of impulse response?(I) what are the requirements for a digital filtbr tobe causal & stable?(III) what are the methods to convert analog filtei into digtal filter?(V) Write Hamming & Hanning window function.(V) What is the relation between digital & analog frequency in the bilinear transformation.(VI) write one difference between butterworth & chebyshev filter.

Section BNote: Attempt any TWO questions

O what is meant by frequency warping? what is the cause of this effect?(II) Convert the analog filter into a digital filter whose transfer function is

o < J2 So/zto/n=asrc

3+3=6

5+5:10

H(s):(s+0.5)(s2+0.5s+2)' Use Bilinear Transformation. Assume T= I sec.

(III) Find the order 9f the chebyshev type I filter of following specifications when designed byusing Impulse Invariance technique. Assume T:lsec

\6s < lH(ja)l<L,lHUql < 0.2,

Section CNote: Attempt any TWO questions

(I) The desired frequency response of a low pass dlterisHa(da)= €:i?L:, lql s 3rci4 Detennine H(d") by using Hanning window ofsizeT.

2no, |<lrl.o(II) Design abutterworth low pass digital filter satisfring the following specifications

0.89 < IHUA)I < L, 0 < n < 0.2n'lHuql < 0.18, 0.3n 1 A 3 n, Apply Impulse Invariance technique & T:lsec.

(III) Design a linear ql^. lowpass FIR filter with a cut-offfrequency of rt2radlsec usingfrequency sampling technique. Take length of the filter equal to 5.

University Roll No..:."'..""':"""""""""-""GLA UnivenitY, Mathura

Course:.B.Tech.fV.Year,II-MidTerm(#)Bxamination'2013-14subject: - DATA I{ETWORKS (ECE401)

Time:-90 MinutesM.M:20Notes:-l. Answer any FOLR questions from Group A, Any Ttwo from Group B and Any T\vo from Group C.

2. Allquestions of the particular group should be answered collectively at one place. All parts of aquestion (a" b, etc.)should be answered at one Place.

3. Answer should be brief and to-the-point and be supplemented with neat sketches.

4. Any missing or wrong data may be assumed suitably giving properjustification

Attempt any ForIR questions. section A

I Define random access and list three protocols in this category.

II What is super netting?

III What is direct delivery?'

IV Name the key responsibility of the Network layer in OSI Model.

V What are the different types of cabling supported by Ethernet standard?

VI What is the difference between hub and a bridge?

l+l+1+1=4 Marks

Section -B

Attempt any TWO questions

3+3d Msrks

I Explain the reservation protocols? Where do we u5e thgEe?.

il What is the importance of Data Link layer? Discuss the services it is providing tonetwork layer.

m Explain the PPP Protocol with the help of Frame structure.

Section-C

Attempt any T'1V0 questions.5+ts10 Marks

I What is.802.11 medium access controls? How it works for the reliable data delivery access

controland security?

|| Explain in detail different type of Bridges. Write short note on Router and gateways.

m Explain the working of CSMA/CD protocol. Why there is a minimum frame length restriction in

csMA/cD.

ilNotes:-l. All questions of the particular grcup should be answered collectively at one place.

2. Allparts of a question (q b, etc.) should be answered at one place.

3. Answer should be brieiand to-the-point and be supplemented with neat sketches.

4.Any missing or wrong data may bJassumed suitably glving proper justification'

5. Figures on the right-hand side margin indicate full marks'

";f,f,lGLA universitvRorrNo....""

-b --.\.*l M^lllur^-llFB-|,*i''.'*

B.Tech IV Year, VII Semester, Session 20t3'14Mid-Term Examination

Radar Engineering @CEa10) Max Marks: 2bTime: llzhrs

1.2.3.4.5.6.

SECTION- A

Notei Answer any FOUR Questions

What do you mean bY DoPPler shift?What do you mean by blind sPeed?

What is clutter?Write down the classification of radar on the basis of waveform.

Explain pulse compression.Explain receiver bandwidth requirement

SECTION.:B .

Note: Answer any T\ilO Questions

1. Explain sea clutter.2. How isolation between transmitter and receiver will be achieved?

3. Explain radar ambiguity through suitable diagram.

lx4=4

3x24

SECTION. C

Note: Answer any T'WO questions 5x2=10

l:, fi,TJllffiTffilff t"f:###t#ff:'f-

ransmitter frequency or5 GHa carcurate

the Doppler frequency seen by a stationary when the target radial velocity is 100 Km/br.

3. Draw the block diagram and explain the working of FM-CW radar in details.

al-l

Course: - B.Tech

Time:90 Minutes

University Roll No.:GLA University, Mathuralfnd Mid'Term Examination, Vll Semester,20LS-[4

Subject: - Entrepreneurship (MBA 401)Max Marks:20

Notes:1. All questions of particular section should be answeled collectively at one place.

2. Answer should be to-the-point and wherever required, be supplemented with neat sketches.3. Any missing data may be assumed suitably giving proper justification.4. Figures on the right hand side margin indicate marks.

Section -'f (Very Short AnswerType Questions)

Attempt ANY FOUR Questions. (CQx f = 04 Marks)

1. Exptaih SIDO and its main function?2. Nafne the four characteristics of Small Scale lndustries3. 'D€find Sniail Scaie iftdustfies.

' 4. 'What do you mean by Ancillary Industrial Undertakings

5. What do you mean. by Sick Industry?6. Mention any two feature of Sick Industry.

Section -'B' (Short Answer Type Questions)

Attempt ANY THREE Questions. (3e X 2 = G Marks)

1. What is the rationale behind the development of small scale industries in lndia?2. What are the major incentives and concessions granted to small scale industries by Government of India.3. Explain the role of SSI in economic development4. 'What

are the symptoms of industrial sickness as per the Compani'es (second Amendment) Act, 2002?5. "lndustrialsickness in small-scale Industry has been atways a demerit for the Indian economy''. Why?

Section -'C (Theoretical euestionsl

Attempt ANY TWo Questions. (zq x 5 = t0 Marks)1. Explain the causes and remedies of lndustrial Sickness.2. . Explain the various stages of starting a Smail Scale Industries.3. Explain the classification of SSI in terms of manufacturing uni! service unit and ancillary unit.

GLA University, MathuraII Mid Term Examinetion.20l$14

Course: - BTechSubJect - Soft Computing (CSE463)Tine:-l.30 HoursNotcg::f) Answcr all SECTIONS , Any Four from Section ^A , Any THREE

IV-Year, VII-Sem.Uni. Roll No:-Total Mrrksr20

from Section B & Any TIYO fronSection C

2l All parts of a question (a, b, etc.) should be answered at one place.3) Answer should be brief end to'the-polnt and be supplemented with neat sketches.4) Any missing or wrdng data may be assumed suitably giving propcr justitication.5) Figures on the right-hand side margin indicate full marks.

2.

4.

6.

2.3.

4.

l.

1.

1.

Section -AAttempt any four of the following [t*4=4]

Comment on the statement "In real world scenario Fuzzy set theory is more beneficial thanprobability theory".What is the logic behind the classical set theory?How Universe of discourse is h_elpful in set theory? \Draw the Venn diagram for (Ac U Bc U Cc).Give the formula r6t ti," membership fun#ons (Any two) with their diagram.For the following two fuzy sets A = {(x1,0.5),(x2,0.7),(x3,0)} and B :{ (x 1,0.8 ),(x2,0.2),(x3. I ) }.Calculate the(i) Intersection and(ii) Union

Section- BAttempt any three of the followlng [2*3=6]

Let the sets A, B, C, and E be glven as follows: E = all students enrolled in the unlversitycricket club. A = male students, B = bowlers, ood C'= batsmen. Draw individual Venndiagrams to illi.rstrate (a) femaie siuoenis (b) bowiers who are not batsmen (c) femalestudents who can both bowl and bat.What are the dlfferent operations on Fuzzy Relatlons? Explain any four,(With Example)What do you understand by the Boundaries of a membership funltion? Lxplain sonie of tnefeatures of the membership function wlth the help of a diagram.What ls Fuzzification? Give the formula for the triangular membership function. Also drawthe diagram

GROUP {Attempt any two of the followlng [5*2=te]

The fuzzy sets'A, B, and C are all defined on the,universe X = [0,5] with the followingmembership functions:Fr(x) = tl (L + 5(x - 5)2) Hg(x) =.2'' pc(x) = 2x/(x + 5)(a) Sketch the membership functions(b) Define the intervals along the x-axis corresponding to the l-cut sets for each of the

fuzzysetsA,B,andCforthefollowingvatubsofl:(i)tr=0.2(ii)A=0.4(iii)A=0.7(lv)A=0.9(v)tr=1.0

LetX = {a, b, c, d}Y = {L,2,3,4}andA = {(a,0Xb,0.8Xc,0.6Xd,1)} B ={(1,0.3X2,1X3,0,3)(4,0)j C = {i1,UX2,t.4)(j,I)(4,0.8)}Deterrnine the implication relations

(i) IF x is A, THEN y is B.(ii) IF x is A THEN y 's

B ELSE y is C.

LetR, S bedefined on the sets {1, 3, 5} X {1, 3, s}.LetR ;{( x, y) I y = x + 2}, S: {(x,y) | x < y). Calculate R o S using^composition; also give value of Cr: and Crr. .

2.

3.