ES100_S2_08_FinalExam.doc

ES100_S2_08_FinalExam.doc - Electrical Systems 100 page 2/4...

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Electrical Systems 100 page 2/4 ___________________________________________________________________________________ PROBLEM #1 (7 Marks) In the circuit shown in Figure 1: a) Use Mesh analysis to find the value of V (3 Marks ) b) Calculate the power dissipated in the 25 Ω resistor ( 2 Marks ) c) Calculate the power associated with the dependent current source and specify whether it is delivered or absorbed ( 2 Marks ) Figure 1 PROBLEM #2 (8 Marks) In the binary-weighted-input DAC shown in Figure 2, the inputs are driven with digital gates where each input is either 0 (0 volt) or 1 (5 volts). a) Derive the input/output relationship ( 4 Marks ) b) Find the output analog voltage for all eight combinations of binary bits (000 through 111) input to this circuit ( 4 Marks ) Figure 2
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Electrical Systems 100 page 3/4 ___________________________________________________________________________________ PROBLEM #3 (15 Marks) For the circuit shown in Figure 3, Calculate: a) V and the power factor of the current and voltage sources (5 Marks ) b) The average power absorbed by the 4 Ω resistors ( 2 Marks ) c) The reactive power associated with X L and X C ( 2 Marks ) d)
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