PRACTICAL MATLAB® FOR ENGINEERS PRACTICAL MATLAB

314 Practical MATLAB® Applications for Engineers

P.3.20 Write a MATLAB program for each circuit shown in Figure 3.94 that returns the
following plots over 1 rad/s ≤ ω ≤ 150 K rad/s:
a. [Y(ω) = 1/Z(ω)] ver su s ω
b. ∠Y(ω) versus ω

P.3.21 Write a program for the circuit diagram shown in Figure 3.95 that returns the
voltage across R 2 = 2 Ω by using
a. Node equations
b. Loop equations
c. Thevenin’s theorem
d. Norton’s theorem

R 1 = 4 Ω R 2 = 3 Ω

XL1 = j 3 Ω XL2 = j^5 Ω

XC = −j 3

Z()

FIGURE 3.93
Network diagram of P.3.19.

(a)

C = 1 F

L = 3 H

L = 3 H

R = 2 Ω

C = 1 F

(b)

R = 2 Ω

Y() Y()

FIGURE 3.94
Network diagrams of P.3.20.