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8th Semester (Dec-2015; Jan-2016) Computer Science and Information Science Engineering Question Papers
1. t0cs82USN
Eighth Semester B.E. Degree Examination, Dec.2015 lJan.20l6
System Modeling and Simulation
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Time: 3 hrs.
Define simulation.
tool.
Six dump trucks are used to haul coal from entrance of a small mine to the rail road. Each
truck is loaded by one of the two loaders. After loading truck immediately moves to the
scale to be weighed as soon as possible. Both loaders and scale have FCFS for trucks. Travel
time from loader to scale is negligible. After being weighed, a truck begins a travel time and
then returns to loader queue. $imulate for clock : 20. Find ayerage loader utilization and
(10 Marks)
),;.
Find me,pqdnti variance of the die tossing experiment. Assume the die is loaded so that the
proba$lity that given face land up in proportional to the number of spots showing. (10 Marks)
ThB.qfufrG to failure of a light bulb is Weibull distributed with V: 1.8x103 hours. fi: ll2
(r) What fraction of bulbs are expected to last longer than mean lifetime?
(ii) What is the median lifetime of a light bulb? (10 Marks)
Name the entities, attributes, activities, events and state variables for the
below:
0 Library ii) Bank iii) Atport iv) Grocery store.
Explain event schedulingl time advance algorithm.
Explain the characteristics of queueing system.
List the steady state parameters of M I M | 1 queue.
Explaintermsused inqueueingnotationofthe form A lB lC lN lK.
. PART_B
Explain generation of pseudo random numbers with examples. Mention the
considerations in selecting a method for generating random numbers.
Max. Marks:100
Note: Answer any FIVE full questions, selecting
atleast TWO questions from each part.
PART _ A
Explain when simulation is an appropriate tool and not an appropriate
(12 Marks)
system shown
(08 Marks)
(10 Marks)
(10 Marks)
(05 Marks)
(05 Marks)
important
(10 Marks)
e scale utilization. The activitv times are siven in the followins table:
Loadine Time 10 5 5 10 15 10 10
Weishins Time 12 12 12 16 12 16
Travelins time
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b. Use Chi square test with u : 0.05 to test whether data shown below is uniformly distributed
or not. Assume critical value
2
^t =16.9/"0 05 S
0.89 0.87
0.64 0.70
0.67 0.56
0.82 0.56
0.19 0.82
0.46 0.0s
0.01 0.81
0.97 0.30
0.24 0.40
0.88 0.64
0.34
0.83
0.96
0.47
0.19
0.99
0.37
0.72:
0.06
018
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0.76
b.qq
0.30
0.11
0.t7
0.51
0.43
0.39
0.26
0.25
0.79
0.77
0.t7
0.23
0.99
0.54
0.56
0.84
0.97
0.44
0.81
0.41,
0.05
0.93
0.66
0.28
0.94
0.64
0.47
0.t2
0.94
0.s2
0.4s
0.6s
0.10
0.69
0.96
0.40
0.60
0.2t 0.46 0.67}k
0.14 0.22 ,,.9il7.4
0.73 0.99 aqb$2
0.31 0 78'L,*0.05
0.37 0.59*1 0.42
0.42 4qr8 0.4s
s.3#3'U.7s o.4s
0.5N 0.73 0.0s
s i0.19 0.79 0.62
0.1 1 0.29 0.78
(10 Marks)
i ,:.
i. 'YiXptain the steps involved in the development of a u$&t model of input data. (10 Marks)
b. Explain the different ways of selecting rrput n1@when data is'not available. (10 Marks)
ii
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7 p. 'Eryltin the calibration and validation of models.
b. Explain the suggestions given for use hr $erification process.
s
8 Write short notes on: S
a. World views &
b. Network of Queues 'e&
c. Optimrzatron via Simulation
4. List Processing fo I
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Time: 3 hrs.
lOME/PM82
Max. Marks:100
(06 Marks)
(08 Marks)
(06 Marks)
(10 Marks)
using Mason's gain
Eighth Semester B.E. Degree Examin c.20l5lJan.20l6
Gontrol Engineering
Note: Answer FIVE full questions, selecting
at leust TWO questions from each part.o
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PART _ A
What are the requirements of an ideal control system?
diagrams.
What are the characteristics of a P-I controller?
Explain the concepts of open loop and closed loop control system, with examples and block
Derive the transfer function for an armature controlled D.C. motor, which relates output
angular displacement (0) with input voltage (e). (10 Marks)
A thermometer is dipped in a vessel containing liquid at a constant temperature of 0;. The
thermometer has a thermal capacitance for storing heat as C and thermal resistance to limit
heat flow as R. If the temperature indicntpd,by thermometer is 06, obtain the transfer
function of the system. (07 Marks)
Distinguish between hydraulic and pneumatic systems. (03 Marks)
Reduce the given block diagram shown in Fig.Q3(a) and determine the transfer function of
the system.
Fig.Q3(a)
in Fig.Q3(b), determine the transfer functionFor the system shown
formula.
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Fig.Q3(b) 1lo Marks)
By applying Routh criterion, discurs the stability of the closed loop system, whose
characteristics equation is s6 +3s5 +4sa +6s3 +5s2 +3s+2 = 0. (08Marks)
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b. A system has the following transfer function,
C(s)
= 20
R(s) s + 10
Determine its unit impulse, step and ramp response with zero rnitial conditions. Sketch the
responses. . (r,
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PART-B 4;!/
5 A feedback control system hu. op.nFoptranrf.r function: .
fli.G(s)H(s) 5 ,,, . rtrG1s7H1s;=-. hLJ' s(s+4)(s'+4s+20)
Plot the root locus for K: 0 to m. Indicate the points on it. *W* (20 Marks)
flu'
6 a. Define the terms gain margin and phase margin. Explain how tffi$ Mn be determined from
Bode plots'-
- -, - -, -- r-.. rt-- --.----r - .L----r,-- tt/ sf Me**)
b. Sketch the Bode plot for the transfer function
. ,'r -
^"G(s)=''
==t'===
-
(1+ 0.2s)(1+ 0.02s) q&
Determine the value of K for the gain cross oveffigudncy to be 5 radlsec. (14 Marks)
$u" *l$.*l
7 a. What is system compensation? Explairffi€ (i) series compensation, (ii) feedback
compensation. I (08 Marks)
b. Explain with a block diagram the (i) ffipompensator, (ii) Lead-compensator. (12 Marks)
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8 a. Draw the Nyquist plot for a giveQprol systenq
G(s)H(s)=,-=*Lg$
s(s + 2[ffiN) '
Determine the range offi. which the system is stable. (14 Marks)
b. State and explain tffiuist stability criterion. (06Marts)
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5. USN 10EC81
(10 Marks)
(12 Marks)
(08 Marks)
(08 Marks)
(12 Marks)
(08 Marks)
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Eighth Semester B.E. Degree Examination, .2015/Jan.2Ol6
Wireless Gom munication
Time: 3 hrs. Max. Marks:100
Note: Answer any FIVE full questions, selecting atleast TWO questions from e&ch parl
la.
b.
2a.
b
3a.
b.
Describe AMPS handoff operation, with neat diagram showing the time sequences of
events, signals and messages used. (10 Marks)
Draw a neat diagram, showing typical wireless system components and describe each
component in brief. (12 Marks)
. Draw and explain the structure of MSISDN, IMSI and IMEI identification numbers.
(08 Marks)
Explain with relevant diagrams, how cell splitting and cell sectoring enable capacity
expansion. (10 Marks)
Explain how Radio Resource Management and Power Management are done in Wireless
Communication Systems. (10 Marks)
a. Classify and name GSM logical channels and explain their major functions. (10 Marks)
b. Draw and describe the structure of TDMA frame, multiframe, superframe and hyperframe.
Speciflu their time lengths. (10 Marks)
PART _ B
Explain Authentication and Ciphering mode setting. Operations in GSM call setup operation
PART - A
Describe AMPS mobile phone initialization steps, with neat time diagram.
with relevant flow diagrams.
Explain lntra BSC Handover in GSM, with neat figure.
Explain spectrum spreading operation in CDMA channels.
Discuss various coding techniques used in wireless communication.
Discuss various path loss models.
5a.
b.
6a.
b.
a.
b.
a.
b.
Explain Network Nodes in CDMA 2000 wireless system, with neat diagram. (12 Marks)
7
'r.l'8 Draw and describe Frame strucfure for general and management MAC frame format in
802.1 1. Also explain the 2 byte control field. (12 Marks)
Draw and explain typical piconet and scatter net in Bluetooth. How one device can act as
both master and slave in scattemets? (08 Marks)
6. USN 10cv81
Eighth Semester B.E. Degree Examination, Dec.2015 I J an.20l6
Advanced Goncrete Technology
Time: 3 hrs. Max. Marks:100
Note: l. Answer any FIVE full questions, selecting
atleust TWO qaestions from each part.
2. Use of 1540262-2009 code is permitted.
PART _ A
I a. Explain the four major components of Portland cement contributes the strength
development. Which compounds are responsible for rapid stiffbning and early settling
problems of the cement? (10 Marks)
b. Discuss the physical-chemical characteristics of the C-S-H and Calcium Hydroxide in a well
hydrated cement paste. How many types of voids and water are associated with saturated
cement paste? (10 Marks)
2 a. What is the role of chemical admixtures in concrete and its mechanisms? Mention four tlpes
of chemical admixtures and its functions. (10 Marks)
b. Explain the mechanism by which mineral admixtures are able to improve the durability,
pumpability and finishability of concrete mixtures. Name some of the pozzolanic admixtures
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used in concrete.
3 Design a concrete mix of M30 grade of concrete for the following data:
Design parameters:
Max size of aggregate - 20 mm
Coarse aggregate - 20 mm and 12.5 mm mixed in the ratio of 60:40
(10 Marks)
(20 Marks)
Specific gravity of Fine aggregate - 2.6 Specific gravity of coarse aggregate * 2.61
Free Surfagb moisture:
Coarse Aggregate - Nil
Watqr Absorption:
Coarse Aggregate - 0.5%
Entrapped Ai - 2%
4 a. Explain in brief various types and causes of cracks in concrete. (10 Marks)
b. Discuss in brief the mechanism of chloride induced corrosion of steel and its control.
(10 Marks)
PART _ B
5 a. Write a note on :
(r) Ready Mixed Concrete (RMC) (05 Marks)
(ir) High Volume Flyash Concrete (HVFC) (05 Marks)
b. Define self compacting concrete (SCC) and its benefits & requirements/ characteristics.
(10 Marks)
Shape of coarse aggregate - Angular
Degree of quality,pontrol - Fair
Cement - OPC 53 Grade
Degree of workability - 0.85
Degree of exposure - Severe
Specific gravity of cement - 3.15
Fine Aggregate - 2oh
Fine Aggre gate - l.0o/o
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7. 10cv81
a. What are the factors affecting the properties of fiber reinforced concrete (FRC) and its
applications? (10 Marks)
b. Explain briefly "Ferrocement" casting techniques and its applications. (10 Maflkq)
Explain in brief following types of concrete with respect to
and its application:
a. Structural light weight concrete
b. High Density concrete
c. High perfoffnance concrete
properties, method of pfdifu"btion
(06 Marks)
(06 Marks)
(08 Marks)
(06 Marks)What are the factors influencing the strength of concrete?a.
b.
c.
How to determine flexural strength of concrete under three-poiht Mding method? (06 Marks)
What are the factors affecting the measurement of pulse v,.glo-city with respect to properties
of concrete? (08 Marks)
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