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HW_3 - Probierns 69 2.19 From the circuit in Fig 2.83 ﬁnd...

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Unformatted text preview: Probierns 69 2.19 From the circuit in Fig. 2.83, ﬁnd I, the power dissipated by the resistor, and the power supplied by each source. Figure 2.83 _ For Prob. 2.19. 2.16 Determine V0 in the circuit of Fig. 2.80. 2.20 Determine iv in the circuit of Fig. 2.84. 36v® 9 51;, Figure 2.84 For Prob. 2.20. 2.21 Find VI in the circuit of Fig. 2.85. 2 V7. Isve 59 VA. 19 :4A _ . 2 s2 Figure 2.81 Figure 2.85 - For Prob. 2.17. For Prob. 2.21. the 2.18 Find I and an in the circuit of Fig. 2.82. 2.22. Find V” in the circuit of Fig. 2.86 and the power dissipated by the controlled source. 69 Figure 2.82 Figure 2.86 For Prob. 2.18. For Prob. 2.22. 10 Chapter 9 Basic Laws 2.23 In the circuit shown in Fig. 2.87, éetermine up and 2.27 Calculate V0 in the circuit of Fig. 2.91. the power absorbed by the 12—0 resistor. i Q L2 9 WW- 4 Q + 1/0 7 6A 8 o 12 o 16 V 9 6 o 6 9 Figure 2.91 . For Prob. 2.27. Figure 2.81 For Prob. 2.23. 2.24 For the circuit in Fig. 2.88, ﬁnd Va/V. in terms of 2-23 Find U1. U2, and 03 in the circuit of Fig. 2.92. (X, R1,R2, R3, and R4. If R1 : R2 = R3 : R4, What value of or will produce IVo/Vsl : IO? 10 R1 —nr + V. R: “In R3 R4 ‘5; Figure 2.88 F? ur 2 92 For Prob. 2.24. 1::— Pfob. 2,28, 2.25 For the network in Fig. 2.89. ﬁnd the current, voltage, and power associated with the 20-16). 2.29 All resistors in Fig. 2.93 are 1 .0. each. Find ch. resistor. + 5 mA 10 kg 1;, 0.01%, 5 kg 20 kc _ Req ' ”“h- Frgure 2.89 For Prob. 2.25. Figure 2.93 For Prob. 2.29. Sections 2.5 and 2.6 Series and Paralle! Resistors 2.26 For the circuit in Fig. 2.90, in, = 2 A. Calculate ii. 2.30 Find Rm] for the circuit of Fig. 2.94. and the total power dissipated by the circuit. 1.. 6 o 6 9 ¢ 1'” Rm 2 .Q 4 Q 8 Q 16 Q. ., 2 D Figure 2.90 Figure 2.94 For Prob. 2.26. For Prob. 2.30. 12 Chapter 2 Basic [awe 2.39 Evaluate Req for each of the circuits shown in 2 Q 4 £2 5 (2 Fig. 2.103. a - H!II#I!!!' o b . 6 kg mm 2 1(5) 1 k9 - 4 kg 12 k9 (b) Figure 2.106 2 kg 1 kg 12 m For Prob. 2.42. ' o (a) (b) Figure 5L1 03 2.43 Calculate the equivalent resistance Rab at terminals For Prob. 2-39' 41-!) for each of the circuits in Fig. 2.107. 2.40 For the ladder network in Fig. 2.104, ﬁnd I and Req. 5 s2 _",, 3 o 2 t2 1 Q . - w H) V 2 o 29 Q 40 9 ' b o Req (a Figure 2.104 For Prob. 2.40. 10 Q 109 ) Cl 0 2.41 If Ru] 2 50.0 in the circuit of Fig. 2.105, find R. 809 209 300 b c (b) Figure 2.101 12 Q For Prob. 2.43. Figure 2.105 For Prob. 2'41' 2.44 For the circuit in Fig. 2.108, obtain the equivalent resistance at terminals a-b. 209 209 a o 10.9 59. b o 30- 9 Figure 2.103 (a) For Prob. 2.44. 2.42 Reduce each of the circuits in Fig. 2.106 to a single resistor at terminals a—b. the 2.56 Determine Vin the circuit of Fig. 2.120. El. 30 o _ ﬁgure 2.120 '- For Prob. 2.56. '*2.57 Find ch and I in the circuit of Fig. 2.121. I 4 n 2 o m..— 6 9 ﬁ 1 o 20 v e 8 9 ﬁ 2 t: ed. 10 Q 3 o R Figure 2.121 For Prob. 2.57. Section 2.8 Applications 2.58 The lightbulb in Fig. 2.122 is rated 120 V, 0.75 A. Calculate V: to make the lightbulb operate at the rated conditions. 409. V. e I. Bulb 809 'I'F battery as shown in F3 g. 2.123. Find the current I through the bulbs. 2.59 Three lightbulbs are connected in series to a 1007V Problems 15 I 30W 40W 50W _,. 100V Figure 2.123 For Prob. 2.59. 2.60 [fthe three bulbs of Prob. 2.59 are connected in parallel to the lOO—V battery, calculate the current through each bulb. 2.61 As a design engineer, you are asked to design a m lighting system consisting of a 707W power supply and two ﬁghtbulbs as shown in Fig. 2.124. You must select the two bulbs from the following three available bulbs. R] = 80 .0, cost = \$0.60 (standard size) R2 : 90 (1, cost : \$0.90 (standard size) R3 = 100 0, cost = \$0.75 (nonstandard size) The system should be designed for minimum cost such that lies within the range I = 1.2A : 5 percent. Figure 2.124 For Prob. 2.61. 2.62 A three-wire system supplies two loads A and B as shown in Fig. 2.125. Load A consists of a motor drawing a current of 8 A, while load B is a PC drawing 2 A. Assuming :0 h/day of use for 365 days and 6 centskah, calculate the annual energy cost of the system. Figure 2.125 For Prob. 2.62. 2.63 If an ammeter with an internal resistance of 100 (I and a current capacity of 2 mA is to measure 5 A, determine the value of the resistance needed. Problems 1 15 illed 3.5 Obtain no in the Circuit of Fig, 3.54. 3.9 Determine 1,, in the circuit of Fig. 3.58 using nodal ‘ analysis. } GX : true of the I 60% suave zove + _b_ 2509 4 k!) ”a a 2kg 5 k9 24v 9 5139 1509 1ch in . Figure 3.58 nnecting it For Prob. 3.9. I. 3.6 Use nodal analysis to obtain Dr, in the circuit of 3.10 Find [0 in the circuit of Fig. 359‘ ircuit Flg. 3.55. ' 1 9 3.761, 3.81), y I" ‘ e e 12 V 9 AH . 8 Q 2 .Q 4 9. Figure 3.55 Figure 3.59 . . For Prob. 3.6. For Prob. 3.10. tage no in 3.11 Find V0 and the power dissipated in all the resistors 3.7 Apply nodal analysis to solve for l/Jr in the circuit of in the circuit of Fig. 3.60. Fig. 3.56. 1 n V 4 o 6 36V — ”V : Figure 3.56 Fi . _ gure 3.60 _ FOI’ PiOb. 3-7. For Prob. 3.11. e currents . . . . . . . 3.8 Using nodal analysis, ﬁnd no in the circuit of Fig. 3.57. 3-12 Usmg nodal 3113331313, determine V0 1n the cucmt 1“ Fig. 3.61. 109 19 Figure 3.51 Figure 3.61 For Prob. 3.8. For Prob. 3.12. probﬁems 1 1 7 uit of 3.20 For the circuit in Fig. 3.69, ﬁnd 0], 02, and v3 usin 3.24 Use nodal analysis and MATLAB to ﬁnd V in the g o nodal analysis. ﬂ circuit of Fig. 3.73. ML 12 V 11'] V3 ‘9 i: 4 Q. 1 Q 4 Q Efgugig'ggm Figure 3.13 -- ' ' i For Prob.- 3.24. 3.21 For the circuit in Fig. 3.70, ﬁnd U1 and :12 using nodal analysis. 3 67 4 kg: 3.25 Use nodal analysis along with MATLAB to determine g ‘ ' ﬂ the node voltages in Fig. 3.74. ML 20 o ”4 3 mA 30 (2. sure 3.10 Figure 3.74 For Prob. 3.25. . _ 3.26 Calculate the node voltages Ul, U2, and U3 in the Circuit ﬂ circuit of Fig. 3.75. M L Figure 3.11 FOr Prob. 3.22. 15 V , 6 Figure 3.12 Figure 3.15 For Prob. 3.23. For Prob. 3.26. ...
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