TAILIEUCHUNG - Electric Circuits, 9th Edition P43

Electric Circuits, 9th Edition P43. 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. | 396 Sinusoidal Steady-State Power Calculations Figure The ideal transformer connected to the 10 fl load in Problem is replaced with an ideal transformer that has a turns ratio of a 1. a What value of a results in maximum average power being delivered to the 10 il resistor b What is the maximum average power The variable load resistor L in the circuit shown in pspice Fig. is adjusted for maximum average power transfer to 7 l. a Find the maximum average power. b What percentage of the average power developed by the ideal voltage source is delivered to RL when RL is absorbing maximum average power c Test your solution by showing that the power developed by the ideal voltage source equals the power dissipated in the circuit. Sections The hair dryer in the Practical Perspective uses a perspective 60 Hz sinusoidal voltage of 120 V rms .The heater element must dissipate 250 W at the low setting 500 W at the medium setting and 1000 W at the high setting. a Find the value for resistor R2 using the specification for the medium setting using Fig. . b Find the value for resistor R using the specification for the low setting using the results from part a and Fig. . c Is the specification for the high setting satisfied Figure As seen in Problem only two independent practical power specifications can be made when two resis-pspice tors make up the heating element of the hair dryer. multisim Show that the expression for the high power rating PH is Repeat Problem for the circuit shown in PSPICE Fig. . MULTISIM Find the average power delivered to the 10 il resistor in the circuit of Fig. . Ph P2m Pm Pl where PM the medium power rating and PL the low power rating. b If PL 250 W and PM 750 W what must the high power rating be Specify the values of R and R2 in the hair dryer cir-practical cuit in Fig. if the low power rating is 240 W pspice and the high power .

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