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test3_F05_solutions

# test3_F05_solutions - ECE211 — 001 Test#3 November 2 2005...

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Unformatted text preview: ECE211 — 001 Test #3 November 2, 2005 Piint Name Re” 2 By signing I am stating that I have taken this quiz in accordance with the NCSU honor code. Signature 1. For the circuit above, ﬁnd the input impedance. State Whether the equivalent impedance is inductive or capacitive and Why. ' v eatmm L. a m KVL LQJEJr -\/ +3303 — J20 (CV/0+ \ok3/Q = O V: —\)'Z+‘5/2, : 2éob(\<0> gay :51 3‘1 l/Sbo F 1/5 H 6cos(100t)V a VR :9” 1/ of 0 DOC/50a 2. For the circuit above, ﬁnd the steady state current, VR(t). -33’ K52,0 - 3’: no; 120<0° V @129} 3. a) Find the power factor of the load above. Include leading or lagging. « C053 ‘2le i, +J‘Z. " LIL-3‘2) +32 = “All? +\)’ Z. Lliyl * l3?) : ~J\Z—U‘US> .Z' 3 3(0—3l2 re 3 IO 4'le H 3A0 +3038 4 g 2 Tom" 0973.9 2 12.53” b) Determine the reactive power delivered to the load. 6 361051 @533 9% J IOU/L3 ;J Y + , _d v ﬁt 5cos(10t)V IOU/mi) 1/100F 4. For the circuit above, convert to the frequency domain. Deﬁne the direction of current through the 2 inductors and write 2 equations with 2 unknowns. The 2 unknowns should be the currents through the 2 inductors. Do not solve. J30 3 51L ~ -— +23”: I'xotiwxhzo KVL OUT 3 —5 +J\$QAA+J>12 \ J r _ ' A _— F: KVL “S +Sggit+AﬁZJi JZOLZ \I (Z or? 3\ 2cos(100t) V 5 For the circuit above, ﬁnd the current, i(t). KVL L9H: .— Zr, 5 [21:2,] +\/I + 5311 T. Q L(0:2. +\}1 ’5 Z. Km. (an ~ 3m: 2. — Zvr 13501" 2‘0 V; : ﬁrs ﬂight ‘DMD‘i «\I _ ISIL'jzsil : Z. _ -—————-——-—-—Z -= o§mb4LkSo I2” 2,5325 ° cg; m = com cub QELHXLEZ ...
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test3_F05_solutions - ECE211 — 001 Test#3 November 2 2005...

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