tailieunhanh - Electric Circuits, 9th Edition P81

Electric Circuits, 9th Edition P81. Designed for use in a one or two-semester Introductory Circuit Analysis or Circuit Theory Course taught in Electrical or Computer Engineering Departments. Electric Circuits 9/e is the most widely used introductory circuits textbook of the past 25 years. As this book has evolved over the years to meet the changing learning styles of students, importantly, the underlying teaching approaches and philosophies remain unchanged. | 776 Answers to Selected Problems Chapter 14 a Hz b -45 H c -11 31 5o t. c vo 0 cos 12 700r - 45 V v c cos 2540f - V yf 5wc cos 63 5001 - V a b Hz c 3311 Hz a kil b Hz a 15011 b 68011 a 100 krad s b kHz c 8 d krad s e kHz f krad s g kHz h kHz a 5 kil 50 mH b kHz kHz c Hz a 1 Mrad s b kHz c 15 d krad s e kHz f Mrad s g krad s h kHz a mH b kHz kHz c 800 Hz a H F b l 697Hzl l 941Hzl Vpeak l 770Hzl 852Hzl Vpcak c l l209Hzl t -344 Vpcak L H C zF Vpeak times as large as the DTMF tones Chapter 15 a 7 ft R2 a R kil R2 kil b ------AAA -- kil a 1H IF ft b H 250 pF 5 kil c 250 pF H a 1 QF 1 05 S2 1 05 1 c 10 kil H 250 pF 1562 55 s2 625 X 106 fcl Hz fc2 Hz Rl ft Rh ft Rl kft kft if R 1 kft then Rf 6 kil a 3 b dB a First-order stage nF second-order stage nF nF Answers to Selected Problems 777 b b 71 m 1 2 11 1 1 --------- cos wot 1 - 4 2 V V x v in v III . . c sinwoi a First section kil kil second section kil kil b CO 1 y - 2cos na tfv 6. 1 n 160 . 320 -------1- 20 sin d ot--------- Q n 2A a . n2 - 1 cooa - 31 rad s wob krad s a 5000 Hz b 25 kHz iZ Ja A-a 2V m cos a b d 0 ni b 25 V 0 for A even 80 . Trk aka -------- sin for k odd Trk 2 240 0 for A even - for k odd. ttA e 200 irk akh sin V for all k bkb - 0 for all k. Trk 4 a 0 3 a R 530511 aR 10 47811 1 - t R 133 i . C 15 nF 2C 30 nF b 80 1 . 77 3 . ------------------sin - cos 4 sin na . t V 77 n 7 5. n n . . _ _ 200 I 1 . UTT -yb 25 4-------- sin cos ncoj

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