MU Circuit Theory - December 2014 Exam Question Paper

MU Electronics Engineering (Semester 3)
Circuit Theory
December 2014

Total marks: --
Total time: --

INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary

1 (a) Test for following polynomial using continued fraction expansion only P(s)=s⁶+2s⁵+3s⁴+4s³+3s²+2s+1

5 M

1 (b) Obtains domain equivalent model at inductor and capacitor with non-zero initial conditions.

5 M

1 (c) The paranelex of a transmission line are G=2.25 m Ω /km, R=65Ω/km, L=1.6mH/km, C=1 μF/km, find characteristics impedance and the propagation constant of the line at a frequency of 1 Khz.

5 M

1 (d) The pole-zero diagram of driving point impedance function is shown At d.c. input impedance is resistive and equal to 2 Ω. Determine value of R.L and C.

5 M

2 (a) Determine voltage V_x by Source shifting and Source transformation.

8 M

2 (b) Find i₁(t), i₂(t) and i₃(t) at t=0

8 M

2 (c) Compare Foster form I and Foster Form II of an LC N/W

\z (s) = \frac{6 s (s^{2} + 4)}{(s^{2} + 1) (s^{2} + 64)}

$\z(s) = \dfrac {6s(s^2+4)}{(s^2+1)(s^2+64)}$

4 M

3 (a) Design a short circuit shunt stub match for Z_L=150-200j(Ω) for a line of z₀=100Ω and frequency at f=20 MHz use Smith chart.

8 M

3 (b) Obtain Power associated with dependent voltage source by using Nodal analysis.

8 M

3 (c) Explain various types of filter's

4 M

4 (a) Obtain hybrid parameter of the inter connected network.

10 M

4 (b) Obtain v(t) for t?0 Use Laplace Transform method.

10 M

5 (a) Check for p.r.f.

a) F (s) = \frac{2 s^{2} + 2 s + 1}{s^{3} + 2 s^{2} - s + 2} b) F (s) = \frac{s^{2} + 2 s + 1}{s^{3} + 2 s^{2} + 2 s + 3}

$a) \ F(s) = \dfrac {2s^2 + 2s+1}{s^3 + 2s^2 - s+2} \\ b) \ F(s) = \dfrac {s^2 +2s+1}{s^3 + 2s^2 + 2s +3}$

8 M

5 (b) Find current flowing in both coils. If applied input voltage is v(t)=230 √2 sin [5000 t-30°]

8 M

5 (c) Obtain pole-zero plot for

\frac{I}{I_{1}}

$\dfrac {I}{I_1}$

4 M

6 (a) For the Network shown below determine R_L for maximum power transfer and also determine P_L.

8 M

6 (b) Find

i_{1} (i), i_{2} (t) \frac{d i_{1} (t)}{d t} a n d \frac{d i_{1} (t)}{d t} a n d \frac{d i_{2} (t)}{d t} a t t = 0^{+}

$i_1 (i), \ i_2(t) \dfrac {di_1 (t)}{dt}\ and \ \dfrac {di_1 (t)}{dt} \ and \ \dfrac {di_2 (t)}{dt} at t=0^+$ if switch k is opened at t=0.

8 M

6 (c) Compare Cauer form I and Causer form II for RC N/W.

z (s) = \frac{4 (s + 1) (s + 3)}{s (s + 2)}

$z(s) = \dfrac {4(s+1)(s+3)}{s(s+2)}$

4 M

More question papers from Circuit Theory

SPONSORED ADVERTISEMENTS