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S08_FinalPrep_Answers

S08_FinalPrep_Answers - GENE/ME 123 Old Final Exam...

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GENE/ME 123 – Old Final Exam Numerical Answers It is important to note that the following numerical answers are provided as a guideline. If your answers do not agree, please ask a peer or a member of the teaching team to check your method. Do not spend a lot time trying to match the answers exactly. Note to S08 students: find Apparent Power instead of Complex Power. Winter 2004 1. a) V 1 = 2 V and V 2 = 4 V; b) 4 mW absorbed 2. a) 6 mA; b) 1.5 W supplied 3. a) V OC = 0.5 V, I SC = 2 A, R EQ = 0.25 Ω ; b) 0.25 Ω 4. - 6 V, - 1.35 mA 5. a) v(10 ms) = -250 mV; W L (6 ms) = 2.5 mJ b) 3.18 μ F 6. a) -2 -180 ° = 2 0 ° V, 2 0 ° A, 1 Ω , 1 Ω , - j 1 Ω , j 1 Ω b) -2 0 ° = 2 180 ° A, 3.61 -56.31 ° A, 1 -90 ° A; c) 1 cos( 2000t - 90 ° ) V 7. a) 2160 W and 1046 VAR; b) 12.05 44.94 ° Ω ; c) 7140 -38.58 ° VA Winter 2005 1. 1.2 mA 2. a) V OC = 12 V, I SC = 6 mA, R EQ = 2 k Ω ; b) 4 k Ω ; c) 2 k Ω 3. - 500 mV, - 1.33 μ A 4. a) b) 5. a) 5.06 -108.43 ° A, 4 143.13 ° A, 4 0 ° A b) 4 -36.87 ° V; c) 4 cos( 1005.3 t – 36.87 ° ) V; d) 11.2 W 6. a) 250 -36.87 ° A rms , 0.141 44.69 ° Ω ; b) 210.5 -18.19 ° A rms c) 932 μ F Spring 2005 1. 8 V 2. a) V OC = -2 V, I SC = -3/16 mA, R EQ = 10.67 k Ω ; b) 10.67 k
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