EEET2249 Tutorial 9 - EEET2249 Circuit Theory Tutorial-9...

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EEET2249 Tut-9 1 of 3 EEET2249 Circuit Theory Tutorial-9: Transient in RLC Circuit Steady State Conditions Q1: In the circuit shown in Fig. Q1, the switch S remains closed for a long time. Calculate the currents I 1 , I 2 and the voltage V C . [Ans: I 1 = 1.2 A, I 2 = 0.8 A & V C = 12 V] Fig. Q1 Q2: In the circuit shown in Fig. Q2, the switch S remains closed for a long time. Calculate the values of I 1 , I 2 , I 3 , I 4 and V C . [Ans: I 1 = 10 mA, I 2 = 6 mA, I 3 = 0, I 4 = 4 mA & V C = 6 V] Fig. Q2 Q3: In the circuit shown in Fig. Q3, the switch S remains closed for a long time. Calculate the values of I 1 , I 2 and V C . [Ans: I 1 = 0 mA, I 2 = 2 A & V C = -80V] Fig. Q3 Q4: In the circuit shown in Fig. Q4, the switch S remains closed for a long time. Then at time t = 0 second, the switch S is opened. (a) Calculate the value of v C prior to time zero.(b) What is its steady state value after the switch has been opened for a long time. [Ans:(a) v C = 100 V, (b) v C = 60 V] Fig. Q 4
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EEET2249 Tut-9 2 of 3 Transients Q5: In the circuit shown in Fig. Q5, the switch S is in position A for a long time prior to time t = 0. Then at
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