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electrical_engineering_1:aufgabe_4.5.3 [2023/03/09 08:02] mexleadminelectrical_engineering_1:aufgabe_4.5.3 [2023/03/23 14:16] (aktuell) mexleadmin
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-<panel type="info" title="Exercise 4.5.3 -Variation: open circuit voltage via superposition (exam task, approx. 12% of a 60-minute exam, WS2020)"> <WRAP group><WRAP column 2%>{{fa>pencil?32}}</WRAP><WRAP column 92%>+<panel type="info" title="Exercise 4.5.3 -Variation: open circuit voltage via superposition (exam task, approx. 12 % of a 60-minute exam, WS2020)"> <WRAP group><WRAP column 2%>{{fa>pencil?32}}</WRAP><WRAP column 92%>
  
 <WRAP right> {{:elektrotechnik_1:schaltung_klws2020_2_3_2.jpg?400|schaltung_klws2020_2_3_2.jpg}}</WRAP> <WRAP right> {{:elektrotechnik_1:schaltung_klws2020_2_3_2.jpg?400|schaltung_klws2020_2_3_2.jpg}}</WRAP>
 A circuit is given with the following parameters\\ A circuit is given with the following parameters\\
-$R_1=5 \Omega$\\ +$R_1=5 ~\Omega$\\ 
-$U_1=2 V$\\ +$U_1=2 ~{\rm V}$\\ 
-$I_2=1 A$\\ +$I_2=1 ~{\rm A}$\\ 
-$R_3=20 \Omega$\\ +$R_3=20 ~\Omega$\\ 
-$U_3=8 V$\\ +$U_3=8 ~{\rm V}$\\ 
-$R_4=10 \Omega$+$R_4=10 ~\Omega$
  
 Determine the open circuit voltage between A and B using the principle of superposition.\\ Determine the open circuit voltage between A and B using the principle of superposition.\\
 <button size="xs" type="link" collapse="Loesung_4_5_3_1_Endergebnis">{{icon>eye}} Solution</button><collapse id="Loesung_4_5_3_1_Endergebnis" collapsed="true"> <button size="xs" type="link" collapse="Loesung_4_5_3_1_Endergebnis">{{icon>eye}} Solution</button><collapse id="Loesung_4_5_3_1_Endergebnis" collapsed="true">
-Case 1: For this case is $I_2=0A$ and $U_3=0V$. The voltage is at $R_4$.+Case 1: For this case is $I_2 = 0~{\rm A}$ and $U_3 = 0~{\rm V}$. The voltage is at $R_4$.
 <WRAP> {{drawio>Sloution4531.svg}} </WRAP> <WRAP> {{drawio>Sloution4531.svg}} </WRAP>
 \begin{align*} \begin{align*}
-U_{AB,1}=\frac{R_4}{R_1+R_4}U_1=\frac{10\Omega}{5\Omega+10\Omega}\cdot2V=1.33V+U_{\rm AB,1} = \frac{R_4}{R_1+R_4} U_1 = \frac{10~\Omega}{5~\Omega+10~\Omega} \cdot 2~{\rm V} = 1.33~{\rm V}
 \end{align*} \end{align*}
-Case 2: For this case is $U_1=0V$ and $U_3=0V$. The voltage is at $R_3$.+Case 2: For this case is $U_1 = 0~{\rm V}$ and $U_3 = 0~{\rm V}$. The voltage is at $R_3$.
 <WRAP> {{drawio>Sloution4532}} </WRAP> <WRAP> {{drawio>Sloution4532}} </WRAP>
 \begin{align*} \begin{align*}
-U_{AB,2}=R_3I_2=20\Omega\cdot1A=20V+U_{\rm AB,2} = R_3 I_2 = 20~\Omega \cdot 1~{\rm A} 20~{\rm V}
 \end{align*} \end{align*}
-Case 3: For this case is $U_1=0V$ and $I_2=0A$. The voltage comes from the source $U_3$.+Case 3: For this case is $U_1 = 0~{\rm V}$ and $I_2 = 0~{\rm A}$. The voltage comes from the source $U_3$.
 <WRAP> {{drawio>Sloution4533}} </WRAP> <WRAP> {{drawio>Sloution4533}} </WRAP>
 \begin{align*} \begin{align*}
-U_{AB,3}=8V+U_{\rm AB,3} = 8~{\rm V}
 \end{align*} \end{align*}
 Superposition means adding the voltages of all three cases. Superposition means adding the voltages of all three cases.
 \begin{align*} \begin{align*}
-U_{AB}=U_{AB,1}+U_{AB,2}+U_{AB,3}=1.33V+20V+8V+U_{\rm AB} = U_{\rm AB,1} + U_{\rm AB,2} + U_{\rm AB,3} = 1.33~{\rm V} 20~{\rm V} 8~{\rm V}
 \end{align*} \end{align*}
 </collapse> </collapse>
-<button size="xs" type="link" collapse="Loesung_4_5_3_2_Endergebnis">{{icon>eye}} Final value</button><collapse id="Loesung_4_5_3_2_Endergebnis" collapsed="true"> \begin{align*} U_{AB} = 29.333... V \rightarrow 29.3 V \\ \end{align*}\\+<button size="xs" type="link" collapse="Loesung_4_5_3_2_Endergebnis">{{icon>eye}} Final value</button><collapse id="Loesung_4_5_3_2_Endergebnis" collapsed="true">  
 +\begin{align*}  
 +U_{AB} = 29.333... ~{\rm V\rightarrow 29.3 ~{\rm V\\  
 +\end{align*}\\
 </collapse> </collapse>