PRACTICAL MATLAB® FOR ENGINEERS PRACTICAL MATLAB
150 Practical MATLAB® Applications for Engineers MATLAB Solution >> V = 10; >> R1 = 1.0e3; >> R2 = 250; >&g ...
Direct Current and Transient Analysis 151 Observe from Figure 2.49 that when R 3 = 250 Ω, I 2 = I 3. Also observe that the curre ...
152 Practical MATLAB® Applications for Engineers ANALYTICAL Solution Recall that R L A (1 TC * ) ∆T where ρ is the Greek lett ...
Direct Current and Transient Analysis 153 >> plot (RL, IL) >> grid on >> xlabel(‘Load Resistance RL’), ylabel( ...
154 Practical MATLAB® Applications for Engineers Example 2.13 Using two loop equations and one node equation, and the matrix ope ...
Direct Current and Transient Analysis 155 MATLAB Solution >> R = [-1 1 1;10 5 0;0 -5 30]; >> V = [0;10;0]; >> ...
156 Practical MATLAB® Applications for Engineers The matrix equation is then given by 15 5 535 10 0 1 2 ...
Direct Current and Transient Analysis 157 >> disp(‘The Symbolic current solutions are given by:’) >> [I1 I2 I3] = so ...
158 Practical MATLAB® Applications for Engineers FIGURE 2.55 Equivalent substitutions of Example 2.15 (from Figures 2.54a to 2.5 ...
Direct Current and Transient Analysis 159 Example 2.16 Create the script fi le current_voltage that returns the currents I 1 , I ...
160 Practical MATLAB® Applications for Engineers The script fi le current_voltage is executed and the results are shown as follo ...
Direct Current and Transient Analysis 161 MATLAB Solution >> R = [3 -2 0; -2 9 -4; 0 -4 10]; >> V = [20; -15; -10]; ...
162 Practical MATLAB® Applications for Engineers The resulting system nodal matrix equation is given by 31 14 2 3 ...
Direct Current and Transient Analysis 163 ANALYTICAL Solution For t < 0, the switch is in position a. Therefore, vc(t) = 0 an ...
164 Practical MATLAB® Applications for Engineers >> Vmax = v(40) Vmax = 32.9680 >> for k=41:200 t(k)=k/20; % 2 < ...
Direct Current and Transient Analysis 165 Example 2.20 The switch shown in Figure 2.64 has been at position a for a very long ti ...
166 Practical MATLAB® Applications for Engineers and vt V it RL() 11 ()* eq where RRRRR RR eq1 (^1231) RR 23 23 8 63 63 ...
Direct Current and Transient Analysis 167 Req2 = R4+(R2*R3)/(R2+R3); disp(‘* * * R E S U L T S * * * ‘) disp(‘****************** ...
168 Practical MATLAB® Applications for Engineers The script fi le analysis_exam is executed and the results are shown as follows ...
Direct Current and Transient Analysis 169 Example 2.21 Assuming that the load is RL, determine the Thevenin’s equivalent circuit ...
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