ECE141_2009FALL_EXAM1__[0]

ECE141_2009FALL_EXAM1__[0] - Electrical Engineering...

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Unformatted text preview: Electrical Engineering Department The Cooper Union ECE 1413 Exam 1 Circuits and Electronics I Fall 2009 1. In the circuit interconnection shown in the figure below, the current i =2A, the voltage V), = 8V and the power associated with the linear cimuit ckt(Y), p(Y) = 20W. .. R1 = 49 R rdm . H W \L—w—F \ ' ‘4‘” linear circuit v ' v . c t(Y . _ t J, —- E _ m// a) Deterrrfine the appropriate value for the resistor R. 1}) Determine pm), the power associated with the voltage source V's. c) Determine the power p(r), the totai power absorbed by the three resistors R, R1 and R2. 2. The initial vottages on the capacitors shown in the circuit beiow are zero. The cement somee i6) applied at terminals (1) and (2) is defined by 0, {<0 i(t)= 5e“‘A, t>0 400mF PG}, Mt) a) Determine the expression for the voltage Va). b) Determine the expression for the current ic(t). c) Obtain the expression for the power 96). (1) Obtain the expression for the energy w(t). ECE 14113 Circuit & Electronics I Exam 1: Fall 2009 3. The voltage and tho can-wt sources in the linear rosistive circuit given below are def'mcd by vs = 50V and iA = 21K , respectively. ix 2kg W 75 | a) Detemfino the voltage V. b) Dotemfine pm , the power associated with the voltage source vs. c) Determine pfih), the power associated with the current source iA. ...
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This note was uploaded on 02/27/2012 for the course CHEMISTRY/ CH/ECE/PH/ taught by Professor Faculty during the Spring '08 term at Cooper Union.

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ECE141_2009FALL_EXAM1__[0] - Electrical Engineering...

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