Electrical Engineering

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Onfnen1995

Engineering

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1) Consider the circuit below. Assume the switch has been in its initial position for a long time, and it switches position as indicated at t = 0. a. Find v(t) for all t > 0. Sketch v(t) as voltage vs. time; annotate critical values on your sketch. b. W 50 k 2 t = 0 12 V 100 kg 100 PF v(t) 2) Consider the circuit diagram below; assume the switch has been in the initial position for a long time, and it switches position as indicated at t = 0. a. b. Find i(t) through the inductor for all t > 0. Sketch i(t) as current vs. time; annotate critical values on your sketch. How much energy is stored in the inductor at t = 00? c. t = 0 20 mA 20 Ω 30 Ω 10 mA i(t) 120 mH 3) Review “Example 6.10” from the textbook (same for 5th/6th editions). Now, consider the circuit diagram below, and assume that the circuit is in steady state. Determine: the amount of energy stored in C1; b. the amount of energy stored in L3; and, the power dissipated in R1 and R3. a. c. R1 2 kg L3 1 mH R3 6 k22 w m w 3 L2 500 PH ma R2 4 ΚΩ B L1 200 μΗ C2 4 F C1 10 F 24 V 4) Consider the circuit diagram below. Find Ix(t) for t < 0 and t>0. 2 ΚΩ 6 k 2 4 ΚΩ w W w Ix 36 V 100 pF + = 0 12 V 3 k.22 5) Consider the circuit diagram below. Find Ix(t) for t> 0. w w 6 k 2 4 ΚΩ 12 ΚΩ w Ix . ell + 1.2 H 9.6 V ell 360 mH t=0
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