Principles and Applications of Electrical Engineering
6th Edition
ISBN: 9780073529592
Author: Giorgio Rizzoni Professor of Mechanical Engineering, James A. Kearns Dr.
Publisher: McGraw-Hill Education
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Chapter 5, Problem 5.74HP
To determine
The values of
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8 For t > 0, the circuit shown in Figure P5.22 is at
steady state. The switch is changed as shown at t = 0.
Vsi = 35 V
C = 11 µF
Vsz = 130 V
R = 17 k2
R = 7 k2
R = 23 k2
Determine the time constant of the circuit for t> 0.
3 Assume that the circuit shown in Figure P5.73 is
underdamped and that the circuit initially has no
energy stored. It has been observed that after the
switch is closed at t = 0, the capacitor voltage reaches
an initial peak value of 70 V when t = 57/3 µs and a
second peak value of 53.2 V when t = 57 us, and it
eventually approaches a steady-state value of 50 V. If
C = 1.6 nF, what are the values of Rand L?
t= 0
ww
4 If the switch in the circuit shown in Figure P5.64 is
closed at t = 0 and
Vs = 12 V
C = 130 µF
R = 2.3 k2
R, = 7 k2
L= 30 mH
determine the current through the inductor and the
voltage across the capacitor and across Rị after the
circuit has returned to a steady state.
t= 0
R1
Vs R2
Chapter 5 Solutions
Principles and Applications of Electrical Engineering
Ch. 5 - Write the differential equations fort t0 for iL...Ch. 5 - Write the differential equation fort t0 for vc in...Ch. 5 - Write the differential equation fort t0 for iC in...Ch. 5 - Write the differential equation for t0 for iL in...Ch. 5 - Write the differential equation for t0 for vc in...Ch. 5 - Write the differential equations for t0 for iC and...Ch. 5 - Prob. 5.7HPCh. 5 - Write the differential equation for t0 for iC in...Ch. 5 - Write the differential equation for t0 for iL in...Ch. 5 - Write the differential equations for: t0 for iL...
Ch. 5 - Determine the initial and final conditions on iL...Ch. 5 - Determine the initial and final conditions on vc...Ch. 5 - Determine the initial and final conditions on iC...Ch. 5 - Determine the initial and final conditions on iL...Ch. 5 - Determine the initial and final conditions on vc...Ch. 5 - Determine the initial and final conditions on iC...Ch. 5 - Determine the initial and final conditions on vC...Ch. 5 - Prob. 5.18HPCh. 5 - Prob. 5.19HPCh. 5 - Determine the initial and final conditions on iL...Ch. 5 - At t=0 , just before the switch is opened, the...Ch. 5 - Prob. 5.22HPCh. 5 - Determine the current ic through the capacitor...Ch. 5 - Prob. 5.24HPCh. 5 - Prob. 5.25HPCh. 5 - Assume that steady-state conditions exist in...Ch. 5 - Assume that steady-state conditions exist in the...Ch. 5 - Prob. 5.28HPCh. 5 - Assume that steady-state conditions exist in the...Ch. 5 - Find the Thévenin equivalent network seen by the...Ch. 5 - Prob. 5.31HPCh. 5 - Prob. 5.32HPCh. 5 - Prob. 5.33HPCh. 5 - For t0 , the circuit shown in Figure P5.34 is at...Ch. 5 - The circuit in Figure P5.35 is a simple model of...Ch. 5 - Prob. 5.36HPCh. 5 - Determine the current iC through the capacitor in...Ch. 5 - Determine the voltage vL across the inductor in...Ch. 5 - Prob. 5.39HPCh. 5 - For t0 , the circuit shown in Figure P5.39 is at...Ch. 5 - Prob. 5.41HPCh. 5 - Prob. 5.42HPCh. 5 - Prob. 5.43HPCh. 5 - Prob. 5.44HPCh. 5 - For the circuit shown in Figure P5.41, assume that...Ch. 5 - Prob. 5.46HPCh. 5 - Prob. 5.47HPCh. 5 - For the circuit in Figure P5.47, assume...Ch. 5 - In the circuit in Figure P5.49, how long after the...Ch. 5 - Refer to Figure P5.49 and assume that the switch...Ch. 5 - The circuit in Figure P5.51 includes a...Ch. 5 - At t=0 the switch in the circuit in Figure...Ch. 5 - Prob. 5.53HPCh. 5 - The analogy between electrical and thermal systems...Ch. 5 - The burner and pot of Problem 5.54 can be modeled...Ch. 5 - Prob. 5.56HPCh. 5 - Prob. 5.57HPCh. 5 - Prob. 5.58HPCh. 5 - The circuit in Figure P5.59 models the charging...Ch. 5 - Prob. 5.60HPCh. 5 - In the circuit shown in Figure P5.61:...Ch. 5 - Prob. 5.62HPCh. 5 - If the switch shown in Figure P5.63 is closed at...Ch. 5 - Prob. 5.64HPCh. 5 - Prob. 5.65HPCh. 5 - Prob. 5.66HPCh. 5 - Prob. 5.67HPCh. 5 - Prob. 5.68HPCh. 5 - Assume the switch in the circuit in Figure...Ch. 5 - Prob. 5.70HPCh. 5 - Prob. 5.71HPCh. 5 - Prob. 5.72HPCh. 5 - Prob. 5.73HPCh. 5 - Prob. 5.74HPCh. 5 - Prob. 5.75HPCh. 5 - Prob. 5.76HPCh. 5 - Prob. 5.77HPCh. 5 - Prob. 5.78HPCh. 5 - Prob. 5.79HPCh. 5 - Assume the circuit in Figure P5.80 is in DC steady...Ch. 5 - Prob. 5.81HPCh. 5 - For t0 , determine v in Figure P5.82, assuming DC...
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- B Determine the voltage across the inductor just before and just after the switch is changed in Figure P5.38. Assume steady-state conditions exist for t < 0. Vs = 12 V Rs = 0.24 2 R = 33 k2 L = 100 mH t= 0 Rs + EIarrow_forward6 Determine the voltage across the inductor just before and just after the switch is changed in Figure P5.26. Assume steady-state conditions exist for t < 0. Vs = 12 V R, = 0.7 2 R = 22 k2 L= 100 mH 1=0 R, R1arrow_forward'7 For t> 0, determine for what value of t i = 2.5 A in the circuit of Figure P5.77 if the circuit is in steady state at t = 0-. 2Ω ww 40 V :20 3Ω wwarrow_forward
- 7 Steady-state conditions exist in the circuit shown in Figure P5.27 at t < 0. The switch is closed at t = 0. V = 12 V R = 0.68 k2 R = 2.2 k2 R = 1.8 k2 C= 0.47 µF Determine the current through the capacitor at t = 0+, just after the switch is closed. ww. idt) R. t= 0 R1 Ry ww-arrow_forwardGiven circuit below, use superposition to find voltage across the capacitor, vclt). Frequency is 100 Hz. 6kn 4kn reee zkn O SmA <45 Vc (t) DC a) Given circuit below and switch ciosed for long time, what is the value of Vc? 5mA 3 luk bị At0, switch is opened. Write a mathematical expression for Velt) after opening of the switch. Evaluate this voltage at te10 ms. Attach File Browse Local Fies rowie Conent Cotection 74°Farrow_forwardDescribe the steady-state similarities and differences of DC and AC circuits with purelyresistive elementsarrow_forward
- The switch in the circuit of Figure P5.58 opens att = 0. It closes at t = 10 seconds.a. What is the time constant for 9 < t < 10 s?b. What is the time constant for t > 10 s?arrow_forward1 Find v for t > O in the circuit of Figure P5.81 if the circuit is in steady state at t = 0-. t= 0 32 ww 12 V 0.8 HE 4 V 1/4 Farrow_forward6 At t< 0, the circuit shown in Figure P5.66 is at steady state, and the voltage across the capacitor is +7 V. The switch is changed as shown at t= 0, and Vs = 12 V C= 3,300 µF R = 9.1 k2 R = 4.3 k2 R3 = 4.3 k2 L= 16 mH Determine the initial voltage across R2 just after the switch is changed. t=0 Le )V½ R R 2 R3 ww-arrow_forward
- For t > 0, determine for what value of t v = 7.5 Vin the circuit of Figure P5.79 if the circuit is in steadystate at t = 0−.arrow_forward=7 Determine the current through the capacitor just before and just after the switch is closed in Figure P5.37. Assume steady-state conditions for t < 0. V = 12 V C = 150 µF R = 400 m2 R2 = 2.2 k2 t = 0 R1 + SI +)arrow_forwardConsider a RC network made of one resistor and one capacitor in series. Draw the charge stored in the capacitor and the current in the circuit as function of time for both cases, charging and discharging. In the circuit shown in the figure below the 20[pF] capacitor initially has a charge of 3.5 [nc] on its plates. After the switch is closed, what will the current in the circuit be when the capacitors have lost 80% of their initial energy? Hint: Work with the equations for i(t). 10.0 pF 20.0, pF 非 15.0 pF 25.02 Figure 3arrow_forward
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