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Rajasthan Technical University 2009-4th Sem B.E Electrical Engineering : (- ) Circuit Aanalysis-II - Question Paper

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Rajasthan tech. University(RTU)
B.Tech IV sem. back exam
2009

Circuit Analysis-II

The candidate should ensure that this question ~

paper contains 5 printed pages.

II B.E. (IV Sem.)

4180 Cir. Ana. II

II B E. (IV SEMESTER) (BACK) EXAMINATION, 2009

(New Four Year Semester Scheme)

[Branch : Electrical Engineering]

Paper V CIRCUIT ANALYSIS - II

Time Allowed : Three Hours Maximum Marks 80

(1) No supplementary answer-book will be given to any candidate. Hence the candidates should write the answer precisely in the Main answer-book only.

(2) All the parts of one question should be answered at one place in the answer-book. One complete question should not be answered at different places ift the answer-book.

Turn over

Attempt any five questions. All questions cany equal marks.

1. (a) Determine the voltage transfer ratio of the circuit shown in fig. 8

l-n- 8H

(6) What are the necessary conditions for a network

Pis')

function A^{t0 a} driving point

function? Check whether the following function is suitable to represent a driving point impedance function:

s +s+7

m=

(s*+s³+4s²+5s+6)

2. The series-parallel circuit shown in fig. has the impedance.

10⁶C?+1)

Z{s>

(5-fl+;100)(5+l-;100)

4180 2

16

(?) Find the value of R, L, C and G.

(ii) Sketch the pole zero diagram. _r

3. Realize the driving point immitance function

_Ffvw(s2}(>+4}

^{) 5(5+3)

in (a) Foster form, (b) Cauer form if

(0 F(s) is an impedance function () F(s) is an admittance function?

16

4. (a) Indicate with proper reasoning which of the polynomials are Hurwitz:

(i) 5²+4s+10

(ii) j⁴+5³+2s²+3s+2

(iii) s⁴+lls³+39s²+51s+20

(iv) 5⁴+5³+6s²+3s+6. 8

4180 3 Hanover

(b) What are the P.R. functions? Describe the properties of P.R. function. Test the following driving point function for positive realness:

5+4

s +35+5

s(s²+2)

(ii) Y(s)=-

(s²+1)(s²+3)'

8

5. (a) Find Y-parameter of the given network.

4180 4

6. Explain the following:

(i) Dot convention in coupled coils. 8

(ii) Self inductance and mutual inductance. 8

7. (a) Derive the fundamental equation of an ideal

filter. 8

(b) Design an m-derived low pass filter to match a line having characteristic impedance of 500 Q and a pass signal upto 1 kHz with infinite attenuation occurring at 1 -2 kHz. 8

8, Write short notes on any two of the following:

(i) Separation property for reactive network

(ii) Barletts Bisection theorem

(iii) 7" and it filter. 8+8

4180 5 400