fundamentals of electric circuits 4th edition solutions manual scribd

... Find I in the network of Fig 1.30 I 1A + + Trang 17hr 60 4 kW 1.2 Trang 18Chapter 1, Problem 26 A flashlight battery has a rating of 0.8 ampere-hours (Ah) and a lifetime of 10 hours (a) How ... lamp, (b) the cost of operating the light for one non-leap year if electricity costs 12 cents per kWh Chapter 1, Solution 28 A0.25 2436530pt W b) Chapter 1, Problem 29 An electric stove with ... constant current of 3 A for 4 hours is required to charge an automotive battery If the terminal voltage is 10 + t/2 V, where t is in hours, (a) how much charge is transported as a result of the charging?

Ngày tải lên: 13/09/2018, 13:31

... -8 V Thus, v1 = 2 V, v2 = 12 V, v3 = -8V Trang 43Which of the circuits in Fig 3.82 is planar? For the planar circuit, redraw the circuits with no crossing branches Figure 3.82 Trang 44(a) ... 17Determine voltages v1 through v3 in the circuit of Fig 3.65 using nodal analysis Trang 18Using nodal analysis, find current io in the circuit of Fig 3.66 Figure 3.66 Trang 19v 4v v 10 v 60 4 ... circuit of Fig 3.63 v = + v 5 2 v + = + − 4v1 - 7v0 = -20 (2) Solving (1) and (2), v0 = 27.27 V Trang 15Apply nodal analysis to find io and the power dissipated in each resistor in the circuit of

Ngày tải lên: 13/09/2018, 13:31

... the circuit of Fig 4.79 oTrang 14efTrang 15Determine v in the circuit in Fig 4.80 using the superposition principle oFigure 4.80 Trang 17Use superposition to find v in the circuit of Fig 4.81 ... 55Apply Thèvenin's theorem to find V in the circuit of Fig 4.105 oFigure 4.105 Chapter 4, Solution 38 We find Thevenin equivalent at the terminals of the 10-ohm resistor For RTh, consider the circuit ... equivalent at terminals a-b of the circuit in Fig 4.113 Figure 4.113 For Prob 4.46 Trang 69Chapter 4, Problem 47 Obtain the Thèvenin and Norton equivalent circuits of the circuit in Fig 4.114

Ngày tải lên: 13/09/2018, 13:31

... circuit of Fig 5.44, the op amp has an open-loop gain of 100,000, an input resistance of 10 kΩ, and an output resistance of 100 Ω Find the voltage gain vo/vi using the nonideal model of the op ... 81Find i in the op amp circuit of Fig 5.100 oFigure 5.100 Chapter 5, Solution 74 Let v = output of the first op amp 1 v = input of the second op amp 2The two sub-circuits are inverting amplifiers ... equal, while the gain of the third is to be one-fourth of each of the first two Calculate the voltage gain 20 10 = A = 102 ⋅1. 2 A Trang 63Find vo in the op amp circuit of Fig 5.84 – – Figure

Ngày tải lên: 13/09/2018, 13:31

... part of this Manual may be displayed, reproduced or distributed in any form or by any means, without the prior (a) What is the time constant of the circuit? (b) What is v( ∞ ) the final value of ... rights reserved No part of this Manual may be displayed, reproduced or distributed in any form or by any means, without the prior Chapter 7, Problem 12 The switch in the circuit of Fig 7.92 has been ... All rights reserved No part of this Manual may be displayed, reproduced or distributed in any form or by any means, without the prior Chapter 7, Problem 25 Sketch each of the following waveforms

Ngày tải lên: 13/09/2018, 13:31

... No part of this Manual may be displayed, reproduced or distributed in any form or by any means, without the prior iC(0+) = 2 A, this means that dvC(0+)/dt = 2/C = 8 V/s Now for the value of Trang ... rights reserved No part of this Manual may be displayed, reproduced or distributed in any form or by any means, without the prior Chapter 8, Problem 11 The natural response of an RLC circuit is ... rights reserved No part of this Manual may be displayed, reproduced or distributed in any form or by any means, without the prior For the circuit in Fig 8.68, calculate the value of R needed to have

Ngày tải lên: 13/09/2018, 13:31

... source transformation to find Io in the circuit of Prob 10.42 o o + _ Trang 80Use the method of source transformation to find Ix in the circuit of Fig 10.96 0 60 ) 4 j 2 ( 6 ) 4 j 2 ( = Z ) j ... 40Chapter 10, Solution 28 25 0 j 4 x j 1 C j 1 F 1 , 4 j L j H ⎯→ ⎯ The frequency-domain version of the circuit is shown below, where o2 75 3 j 2 ( 21 o I 75 3 j 2 ( I 25 0 j 1 ( 30 − + − + ... 16 ° ∠ = + + 25 44 j 16 125 54 j 12 Trang 76Using source transformation, find i in the circuit of Fig 10.94 30 8 ) 30 t 200 sin( j ) 10 5 )( 200 ( j L j mH 5 j - ) 10 1 )( 200 ( j 1 C j 1 mF

Ngày tải lên: 13/09/2018, 13:31

... balanced three-phase source with a line voltage of 210 V If Z l = 1 + j1 Ω , Z∆ =24− j30Ω, and ZY = 12 + j5 Ω , determine the magnitude of the line current of the combined loads = 5j20 )10j8)( 5j12( ... connected to a balanced delta-connected load of ZL = 10 + j8 Ω per phase as shown in Fig 12.52 (a) Determine the value of IAC (b) What is the value of Ib? 1202308 j10 120230 ° ∠ − = 17.96∠–98.66˚ ... source with a line voltage of 240 V Each load phase draws 6 kW at a lagging power factor of 0.8 Find: (a) the load impedance per phase (b) the line current (c) the value of capacitance needed to

Ngày tải lên: 13/09/2018, 13:31

... Problem 2 Determine the inductance of the three series-connected inductors of Fig 13.73 Trang 2Two coils connected in series-aiding fashion have a total inductance of 250 mH When connected in a series-opposing ... I2 in the circuit of Fig 13.90 Calculate the power absorbed by the 4-Ω resistor j26j70 3036 Trang 30coupling as sources in terms of currents that enter or leave the dot side of the coil Figure ... direction of Io This can be seen by looking at the resulting value of ∆2 which now becomes 3400∠150° Thus, Trang 40 Find the average power delivered to the 50-Ω resistor in the circuit of Trang

Ngày tải lên: 13/09/2018, 13:31

... Trang 24The Bode magnitude plot of H(ω ) is shown in Fig 14.75 Find H( ω ) Figure 14.75 For Prob 14.23. Chapter 14, Solution 23 A zero of slope + 20 dB / dec at the origin ⎯ ⎯→ j ω A pole of slope ... RLC resonant circuit has a midband admittance of 25 × 110− 3 S, quality factor of 80, and a resonant frequency of 200 krad/s Calculate the values of R, L, and C Find the bandwidth and the half-power ... connected in series with a capacitor of 50 pF, a resistor of 6 Ω and a signal generator that gives 110 V rms at all frequencies Calculate ωo, Q, and B at resonance of the resultant series RLC circuit

Ngày tải lên: 13/09/2018, 13:31

... transform of the function in Fig 15.27 ( ) ( ) se e 1 5 s32 ss Trang 15Obtain the Laplace transform of f(t) in Fig 15.28 = ) s ( e 5 e 3 e 3 5 s 1 − + − Trang 16Find the Laplace transform of f(t) ... transforms of the following: (a) g ( ) t = 6 cos ( 4 t − 1 ) (b) ( ) = 2 ( ) + 5 − 3 ( ) − 2 ( − 2 ) t u e t tu se 6 e 4 s s 6 ) s ( + = + (b) 3 s e 5 s 2 ) s ( Trang 4Find the Laplace transform of ... = s s F t t f s s Trang 12Find the Laplace transform of the signal in Fig 15.26 Figure 15.26 For Prob 15.14 Trang 13Taking the derivative of f(t) twice, we obtain the figures below e 5 7 s

Ngày tải lên: 13/09/2018, 13:31

... Problem 18 (a) Find the Laplace transform of the voltage shown in Fig 16.52(a) (b) Using that value of vs(t) in the circuit shown in Fig 16.52(b), find the value of v0(t) e s V )] 1 t ( u ) e 2 2 ... Problem 12 Find vo(t) in the circuit of Fig 16.46 Figure 16.46 For Prob 16.12 Trang 19Chapter 16, Solution 12 We apply nodal analysis to the s-domain form of the circuit below o o o sV 2 4 ... − + = + + + − + Trang 34Chapter 16, Problem 21 Find the voltage v0(t) in the circuit of Fig 16.55 by means of the Laplace transform Figure 16.55 For Prob 16.21 Trang 35 - At node 1, o

Ngày tải lên: 13/09/2018, 13:31

... h’(t) 0 1 Trang 8Find the Fourier transforms of both functions in Fig 18.31 on the following page Trang 9 10δ(t) 0 1 2 -5 Take the Fourier transform of each term (jω)2G(jω) = 10jω – 5jωe–jω ... Chapter 18, Problem 7 Trang 10Find the Fourier transforms of the signals in Fig 18.32 2 ( ) Trang 11Obtain the Fourier transforms of the signals shown in Fig 18.33 j2 21tj1 0tj 21 tj1 0 tj ) ... transforms of the signals in Fig 18.34 = ω ) 2 sin 2 4 sin ( Y (b) Z ( ) ( 2 t ) e dt 2 e ( j t 1 ) 2 2 e ( 1 j ) 2 j2 101 tjt ω − ω = − ω − ω Trang 13Obtain the Fourier transforms of the signals

Ngày tải lên: 13/09/2018, 13:31

... Z g − + + Trang 78The h parameters of a two-port device are given by h11= 600 Ω , h 3 22= 2 × 10− S Draw a circuit model of the device including the value of each element Trang 79Chapter 19, ... V 1 1 - y V I Thus, = ] 2 1 12 1 - 12 1 - 8 1 Trang 32Find the y parameters of the two-port in Fig 19.80 in terms of s 1 2 ) s 1 ( 2 s 2 2 || s 1 I I I V + = + 1 s 2 2 1 s 2 2 -) s 1 ( ) s ... parameters of the two-port network in Fig 19.83 Figure 19.83 For Prob 19.22 Trang 39The 2-Ω resistor is short-circuited At the top node, KCL gives Trang 40(a) Find the y parameters of the two-port

Ngày tải lên: 13/09/2018, 13:32

... part of the book, it is not required. Supplements Solutions Manual an Instructor’s Solutions Manual is available to instructors who adopt the text. It contains complete solutions to all the end -of- chapter ... large variety of electric circuits. Kirchhoff’s lawswerefirst introduced in 1847 by theGermanphysicistGustav Robert Kirchhoff (1824–1887). These laws are formally known as Kirchhoff’s current ... in an electrical network. Kirchhoff’s laws, along with Ohm’s law, form the basis of circuit theory. Born the son of a lawyer in Konigsberg, East Prussia, Kirchhoff entered the University of Konigsberg...

Ngày tải lên: 08/05/2014, 15:37

... Dimensions, thermal conductivity and surface temperatures of a concrete slab. Efficiency of gas furnace and cost of natural gas. FIND: Daily cost of heat loss. SCHEMATIC: ASSUMPTIONS: ... if the thickness of the glass were doubled to match that of the air space. The principal advantage of the double pane construction resides with the low thermal conductivity of air (~ 60 times ... emissivity and temperature of a surface placed in a large, evacuated chamber of prescribed temperature. FIND: (a) Rate of surface radiation emission, (b) Net rate of radiation exchange between surface...

Ngày tải lên: 08/08/2014, 17:20

... and thermal conductivity of steel tubes. Temperature of steam flowing through the tubes. Thermal conductivity of insulation and emissivity of aluminum sheath. Temperature of ambient air and surroundings. ... C. = < COMMENTS: Use of the critical insulation thickness in lieu of a thin coating has the effect of reducing the maximum insulation temperature from 778.7 ° C to 318.2 ° C. Use of the critical insulation thickness ... larger than those of the transistor. PROBLEM 3.41 KNOWN: Thin electrical heater fitted between two concentric cylinders, the outer surface of which experiences convection. FIND: (a) Electrical power...

Ngày tải lên: 08/08/2014, 17:20

... guesses. (2) Note that the rate of heat transfer by convection to the top surface of the rod must balance the rate of heat transfer by conduction to the sides and bottom of the rod. NOTE TO INSTRUCTOR: ... is abcde qqqqqq ′′′′′′ =++++ or in terms of conduction terms between nodes, 123457 qqqqqqq. ′′′′′′′ =+++++ Each of these rates can be written in terms of nodal temperatures and control volume ... as well as the rate of heat transfer by convection to the surface. COMMENTS: (1) Using the matrix-inversion method, the exact solution to the system of equations (1, 2, 3) of part (a) is T 1 ...

Ngày tải lên: 08/08/2014, 17:20

... form of the FDEs for the interior nodes. Use space and time increments of 37.5 mm and 1.2 s, respectively, for a 17-node network. For the surface node 00, use the FDE derived in Section 2 of the ... at 1000 ° C (instead of a net radiant flux). FIND: (a) The temperatures T(0, 120 s) and T(0.15 m, 120s) using the finite-element software FEHT for a surface emissivity of 0.94 and (b) Plot the ... steady-state temperature. (2) Both the FEHT and IHT methods of solution give identical results. Their steady-state solutions agree with the result of an energy balance on a time interval basis yielding...

Ngày tải lên: 08/08/2014, 17:20

... emissivity of Nichrome wire. Electrical current. Temperature of air flow and surroundings. Velocity of air flow. (a) Surface and centerline temperatures of the wire, (b) Effect of flow velocity and electric current ... and thermal conductivity of steel pipe. Temperature of water flow in pipe. Temperature and velocity of air in cross flow over pipe. Cost of producing hot water. (a) Cost of daily heat loss from ... with use of the correlation for D Nu. Initial temperature, power dissipation, diameter, and properties of a heating element. Velocity and temperature of air in cross flow. Temperature of surroundings. ...

Ngày tải lên: 08/08/2014, 17:20