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Spring05-ECT-Exam2

Spring05-ECT-Exam2 - Name ID Problem(1 For the OP Amp...

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Name: ______________________ ID # : ________________________ 1 Problem (1) ( 15 point ) For the OP. Amp circuits shown below, find the output voltage V o . Assume that the OP-AMPs are ideal. R 2 R 1 V s V o + v s ( t ) R C v o ( t ) C R R 2 R 1 v O ( t ) v S ( t ) + +

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Name: ______________________ ID # : ________________________ 2 Problem (2) ( 10 point ) For the element shown, the waveforms for the element voltage and element current are found to be: v ( t ) = 5 cos (500 t ) V i ( t ) = 10 sin (500 t ) A Sketch the two waveforms, on the same graph, and show which one in leading . Determine the phasors representing the waveforms of the voltage and the current . Define the element type ( inductor, capacitor, resistor) and find its value. For the circuit shown find the equivalent capacitance, C ab between terminals (a) and (b) C ac between terminals (a) and (c) 25 nF 25 nF 50 nF a b c v ( t ) + i ( t )
Name: ______________________ ID # : ________________________ 3 Problem (3) ( 15 point ) The switch in the circuit shown has been open for a long time before closing at t = 0 . + + 36 V 12 V 6 k Ω 12 k Ω 2 k Ω v c + 100 μ F t = 0 a) Find v c (0 + ) . b) Find v c ( ) .

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Spring05-ECT-Exam2 - Name ID Problem(1 For the OP Amp...

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