E*tt- S'e"flft :EE

[Time: Three Hours]

h e nce,:fi n d-its ra n k;-i 6d ex a nd s i gn atu re a nd v.g.!ue ifaq9,

,,g,1,gpg"the;iuq'of tljeigsidues at singular points of f (z) =

Ar^ -Y

z-4z(z-l\z-2)

Please check whether you have got the right quegipfi.,p5pe.ri,'" .

+i |-, o , j ..-.,.-.

. rl.,..rii- iri ,r_.:

(6)

(5)

(8)

l) r rlrrl'lt

Q.3,a)VerifyCayleyHamiltontheoremfor,l = lo r ol anAhencefind A-' & Ao (G)

, ,' [t't z)

e'b) Using Residue theorem evaluate I --;-- , a, where C is lz l=4. (G)

. Ca -,t

lz 3lc) Find the singular,value decomposition of i ' ' i (8)' L, ,l

[- r q1Q.4. a) lf .t = | I , prove that 3tanA=Atan3 (6)l) rl

467 7 OF 26CF24EE7 7E689 58C48 IDF 8D 1 3

(6)

Q.5. a) Find the extremum

"l ek""e cos( tsin

0

b)

tn

, ., ....:r. r; ..-1 :: '..' ":",' ,..':

.t, : .. !,t .'--''i:. '" ,1 .

(6)

(8)Q)(o .=;, n

:t' , ',' '".t,.it ,. ,: ".:.,:.r. t, ..:. ..

,.... , -|::. r.:'.' i,.

467 7 OF 26CF 24EE? 7 E,6895 8C4E IDFSD 1 3

c) Find all possible Laurent,s expansions of

b) Show that the vectors vl

Express v,

2

c) lf C is circle lz l=1, using the integral

. '; ,'1,: :,

'.,: I r..: .-1 -. )

T1524 / T1039

Q.3 a) For the unity feedback system having

c(r)=;ffiDetermine

i. Type ofsystemii. Error coefficients and

iii. Steady state errorfori/pas t++t$

satisfied by them.'v ,f*,)

b) For the system shown below choose Vr (t) a nd Vz (t) as state va ria bles and write down the state equations L0

1: ,,:

E. " 1 T4;1-( :: I l-if

- __.,." .ir.,:-ii

fI

lLt({)

l.*v

Figure 3

Q.4 a) Sketch the root locus for an open loop transfer function

G(s)H(s)=sG#+10)10

10

10

b) sketch the bode plot and determine GM and,,piVt,f$i tfig;ir.g1bfu funciion t;,1

G(s)H(s) = -8Gjrl-s(sz +4s+ 5)

hence comment on stability

b) Determine stabilityi. s6+2s s+8s a+1.2s 3+ 20s2 +16s +18

ii s7 + 2s 6+ ss +.-2s a-s3-2s'-s-2=0

Write short note on any two from the followingCo -relation between time domain and frequency domain specification.Explain the effect of addition of poles and zeros to the system.Different conti nuous com posite control lers.

,1:- ::'j ;,i.: :. "a:1

t:j

Q.5 a) Draw Nyquist plot for &

G(s)H(s)=ffi ano

10

20Q.6a)

b)

c)

Page2of 2

O92EF 8EI7 7 DD9 6EBE27 9 CFD3 C5 72903 C

v1{.t*}

T1524 ITIO39 S.E.(ELECTRONICS ENGGXSEM IVXCBSGS) PRINCIPLES OF CONTROL SYSTEMS

Q.P. Code :16469

PleasecheckwhetheryouhavegottherightquestionpaPer.N.B: 1. Question No 1 is compulsory.

2.Attemptanythreequestionsfromremainingfivequestions.3. Assume suitable data if required. , ,'4. Figure to the right indicates full marks.

Q.1 Attempt any four from the following ZO

a) What are the properties of sate transition matrix?b)HoWtofindgainmarginandphasemarginfrombodeplot?..c) Explain any five rules of root locus plot.d) Differentiate between open loop and close loop system.e) Draw the step response of a second order undampgd, under damped and critically damped system.

Q.2 a) Find transfer function of the block aiairem,iiliw;fr,,I;fl'gq.rfl.by usind btocf oiagiafrrcdi;Aib" method 10

Qfs'r

..Figure ,1

b) Find the valrcof Cls).

srs) ( fs,l

F'igure 2

Page 1 of 2

O92EF 8E I7 7 DD9 6EBE27 9 CF D3 C 57 29 03 C

10

ut6

tll tr)

T1524 lTt039/:1

Q.3 a)

Q.P. Code

For the unity feedback system

e (')=;##,orDetermine

i. Type of systemii. Error coefficients and

iii, Steady state error for i/p as t *+, SFor the system shown below choose V, (t) and Vz (t) as state variables and write down therstate equationssatisfied by them"

rl2 l{.} rr -(4')

1 t4r:*l r-i {:-

having

10b)

p"

Figure 3

Q. a) Sketch the root locus foran open loop transferfunction of a control

G(s)H(s) = G*xsl4s+10)b) Sketch the bode plot and determine GM and PM forthe transfer

10

10

10

G(s)H(s)=##6

Q.5 a) Draw Nyquist plot for &

c(s)H(s)=ffi ,na

,-i,l -.':--'','.r';;'function:".:q'--\1 ,.'ri :-.1 ; ! ,.1.,._t i;.

| ::: t :.. ..4::.'11 ..: ;::, ::.' '.

l;1 .!::.',;,::',, ;:1",.;:,''.,t'.'"':"" t:

i,1i:: " "...:

b) Determine stabilityi. s6+2s s+Ss a+12s 3+ 20s2 +16s +18

Q.6 Write short note on any two from the followinga) Co -relation between time domain and frequency domain specification.b) Explain the effect of addition of poles and zeros to the system.c) Different continuous composite controllers.

10

20

Page 2 of 2

O92EF 8EI7 7 DD9 6EBE27 9 CFD3 C 5 72903 C

: .:.:'

',. i:

T1524 /TIO4I ELECTzuCAL MACHINES

[Time: 3 Hours]

.:

N.B:: -i.' .

,';t,'.-: ,i .,.:.:..::a . : ..a. .rr,

:i' . .-) r... ' .,:::'r.: j'.

' , iE' .

a) State important features and applications of Brushless DC Motorsb) Is Single phase Induction Motor self-starting? Justify the answer.c) Compare the different Starting methods of three phase Induction Motord) State the significance of commutator and brushes in DC machine.

Q.5 a) Discuss briefly, with the neat sketches, armature reaction in DC machineb) Explain the blocked rotor test for single phase induction motor

Q.6 Write short note on any three:

b) DC series motor starterc) Speed control of Brushless DC Motors .

, ' d) Drive circuits of Stepper Motors

i'': 'rS,'

Q.2 a) Obtain the expression for full load to.qu. of 3- ph induction motor. Also obtain the 07conduction for maximum torque under runningiondition at starting.

b) Briefly describe the construction, working anJcontrol require^.nti of switches 08rehrctance motor

Q.3 a) A 4-pole, 500 V DC shunt motor has 720 wave connected conductor in the armature. 07The full load armature cuffent is 60 A and fltx per pole is 0.03 wb. The armatureresistance is 0.2Q and the contact drop is 1 V pel brush. Calculate the full load speed of

b) Explain the constn-rction and working of permanent magnet synchronous motor

Q.4 a) The power input to 6 pole, 3-ph, 50 Hz induction motor is 42 KW, the speed is 970 0gr.P.ffi., the stator losses are 1.2 KW and friction and windage losses are 1.8 KW.Find

, Slipii) The rotor copper lossiii) The b.h.p. ,'

iv) The efficiency.b) Explain the construciion and operation of variable reluctance stepper motor, 07

0807

15

,]:

1

9780C43F3C299 12F C2821BC3 1 73AA4A9

2. Attempt any Three question form

4. Assume suitable data if any.

gE Se,am W I er5 crs I

trTRX DEC

F^ry LDt+ lsl slerl?

IMarks:80]

08

10

lP.r.oI

,:i

N.B:

Q.P. Code:L0648

[Time:3 Hours]

Please check whether you have got the right question paper.1' Question no1 is compursory and sorve any three questions from remaining.2. Draw neat and labeled diagrams.3. Assume suitable data if it is required.

output impedance for CS self biased

q.1

20

Vs

10s

Q.2

10

Q.3

72

$=50

Q.+

4 E 2 I Dh i.Il9D6D( l(r-590(-FFS9B878(.F73-s

Soive all:

1) Draw the output voltage waveform for a shown circuit.

Vo

l:

b) Determine Av, Zi & Zo for given circuit 10

loss=SmA

Vp=ltrl

Rd-50k

Q.s

Q.6

a) Draw the circuit diagram of Class AB push:pull i

b) Determine higher cut off frequency'for'a given

10

10

-- 'l :.... ,. -. ., ., 1

cro=2P F, Cs.=4 P F, co,=0. 5 P F, cwi =5 P F, cwo=6 P F

cwi & cwo are wiring capacitance (lnput & Output respectively)

Write short notes (any four)

1) Comparison of CB,'CE & CC amplifier

2) Voltage shunt negative feedback amplifier

3) Wilson current source

4\ Cascode amplifier

5) Cross over distortion in class B power amplifier

2

4E2 I DEFB9D6DC3659OCFF89B878CF73 5

20

S,L S CM v €.TRx CBes rr1+"{ z_o(r

T1524 T1038 MICROPRO( E:S:,OI( \ND PERIt,HEItALS

zslo r lt orv

Q. P. Code: 13591

(3 IJours)Total Marks: 80Note: 1. Question No. 1 is compuisory.

2. Solve any three from the rernaining five questions.

3. A11 questions carry equal marks.

1. a. Explain the register se1 ofthe 8086.

b" Write a brief note on the dedicated intemrprs or"thr 8086.

c. Explain the clock and rcset circuits of the 8086 syiicrn.

d. Explain the usage of'thc lbllou,ing instruction., i. ,,AA

ii. I t1A SI, labe1

2. a. Explain the bus arbitration tecliniques used in loosely coupled systems. Also,

(0s)

(05)

(05)

(0s)

( 10)

highlight advantages and disadvanrages of each.

b. Write an assembly language prograln for the 8086 to convert a Hexadecilral nurnbcr ( 10)

to its ASCII equivalent.

3.a. Design and explain the follow,ing system comprisinu of.

8086 working at 8 MHz

16 KB of EPROM using 8KB deviccs

l6 KB of RAM using 8 KB deviccs

I input porr ( 8 Bit)

Shorv the Memory, I/O map and relevant address ciecoding.

b. Explain Memory Segrnentation in the 8086. State i1s advantages.

4.a. Explain the cascaded mode of operation of the 8259 PIC. Clearly explain thc

sequence ofoperation

b. Explainthe8086-808Tinterfacewithar.reatdiagranr.Describe the roleoftheS2SE (i0)Bus controller in this systerr.

5.a. Explain u,ith the help olnc;it tiniing di.rqr.lrl, \io(i. I opL.ration in thc g2-55 ppl (10)

Assurle Port.,\ as inptit port ancl port il ils i)Lttr) rt 1 ,r.1.

b' Interlhce a 4*4 tratrir 1'r'rPad ro thc 8()116 ..\1, ,. \. rtc;lr alsoritirnt to scrrn tite i<evpad. (Jg)

(Assernbir, lanquage llr()qraul ir()t e\llccted r

(10)

( 10)

( 10)

7879i\ ll9848UCA74B20.iU 1 5t Il50C4DBB5

T1-s24 i I 1038 N'll( liOPliOtlESSOR AND PERIPIIIIRALS

a. P. Code: 13591

(20)6. Write sl-rort notes on (any two):

a.8237 DMA controller

b. 8085 Architecture

c. String instruclions of the 8086

***:+**x*******

- .:.

-t .'

,'ii79ALl9ii.if r'( ..\ il.l rr)qll I52tl50C4DBR5

*9