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Principles And Applications Of Electrical Engineering
- Consider the circuit shown in the figure, with ε=36.0V,R0=50.0Ω,R=150Ω andL=4.00H. (a) Switch S1 is closed. Just after S1 is closed, what are the current i0 through R0 andthe potential differences VAC and VCB? (b) After S1 has been closed a long time so that the current has reached its final, steadyvalue, what are i0 , VAC and VCB? (c) Find the expressions for i0 , VAC and VCB as functions of time since S1 was closed.Do your results agree with what you get in (a) and (b) ? Graph i0 , VAC and VCB as afunction of time.arrow_forwardAssuming that a nonzero ac voltage source is applied, what can you say about whether the power and reactive power are positive, negative, or zero for a pure capacitance in series with a pure inductance? Consider cases in which the impedance magnitude of the capacitance is greater than, equal to, or less than the impedance magnitude of the inductance. Repeat Problem P5.74 for the inductance and capacitance in parallel.arrow_forwardDraw the Thévenin and Norton equivalent circuits for Figure P5.91, labeling the elements and terminals.arrow_forward
- The Thévenin equivalent of a two-terminal network is shown in Figure P5.93. The frequency is f=60 Hz. We wish to connect a load across terminals that consists of a resistance and a capacitance in series such that the power delivered to the resistance is maximized. Find the value of the resistance and the value of the capacitance. Repeat Problem P5.93 with the load required to consist of a resistance and a capacitance in parallel.arrow_forwardCapacitance= 5uF1) Determine the time constant of the circuit for the capacities2) For the capacity value, calculate the estimated time to come to the final state.3) Plot capacitor current and voltage graphs and show if it works in harmony with the time constant you calculated. NOTE: if you want you can use falstad online circuit simulator.arrow_forwardA lossy capacitor Cx, rated for operation of 5 kV, 50 Hz is represented by an equivalent circuit with an ideal capacitor Cp in parallel with a resistor Rp. Cp is 0.102 microF and Rp=1.25 Mohm. The power loss, and loss tangent of this lossy capacitor at rated voltage respectively ?arrow_forward
- Solve for the mesh currents shown in Figure P5.54.arrow_forwardFor the circuit in the figure, initially the switch S is closed in (b), until the capacitor is charged; then the switch goes to point (a) so that the battery is disconnected and the capacitor, resistor and inductor are connected in series. Once S is connected at point (a), find a) the angular frequency of oscillation for the series circuit b) write the equation for the charge on the capacitor as a function of time with the respective values of Qmax, angular frequency Wd and time T c) make the Q(t) graph showing explicitly the envelope of the exponential decay (Hint: use geogebra or an application of your choice to obtain a graph).arrow_forwardDetermine (a) the amount of energy stored in each ofthe three capacitors shown in Fig. P5.22, (b) the equivalentcapacitance at terminals (a, b), and (c) the amount of energystored in the equivalent capacitorarrow_forward
- Write the differential equation for t > 0 for thecircuit of Figure P5.27.arrow_forwardAssume at t=0, a switch in an RC circuit in which the resistor and capacitor are in parallel is closed. how would this affect voltage, charge, and current at t=0 and after a very long time? what if this scenario was the opposite, in which the switch was opened rather than closed? what effect would this have?arrow_forwardDescribe the steady-state similarities and differences of DC and AC circuits with purelyresistive elementsarrow_forward
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