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Consider two x-polarized waves that counter-propagate along the z axis. The wave traveling in the forward z direction is of frequency ω1; the backward z propagating wave is at frequency ω 1, where ω < ω1. Both frequencies are very slightly detuned on either side of their mean frequency, ω 0: such that ω0 - ω1 = ω1 – ω0 <<1. Using the complex field forms, construct the expression for the total electric field, and from this, find the power density distribution (proportional to EE* ). Your answer should be in the form of a '’standing wave" that in fact moves slowly along the z axis. Find an expression for the velocity of the wave pattern in terms of given or known parameters. Does the pattern move in the forward or backward z direction?
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Chapter 11 Solutions
Engineering Electromagnetics
- 4. A 120 volt rms voltage source supplies 20 Amps rms to a load. The load requires 2,078 watts. What is the reactive power (Vars) and the power factor of the load. Assume the load is inductive. (15pts)arrow_forward6. Determine the rms value of the voltage cyclical waveform shown below. (15 pts) Zv N 시 ما Msec 8arrow_forward7. If the power factor of a load is unity is this also the condition for maximum power transfer? Why or why not? (10 pts)arrow_forward
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- For the circuit shown, let Is = 5, R₁-40, R2-30, R3-100, R4-80, R5-40, R6-30, R7- 10, and Rg= 100, and find: R₂ R6 ww www VX R3 R7 R8 RI R₁₂ Rs R5 www • The voltage Vx" (V) ⚫ The power absorbed by the output resistor Rg: Power= {Hint: you can use current divider (CD) or any other method.} (W) Tarrow_forwardFor the circuit shown, let V₁ = 26, R1-30, R₂-40, R3-50, R4-20, R5-100, R6-10, and find: RA R5 R3 V (+) R₁ R₂ R6 www • The voltage v (V) • The power delivered by the power source Vs: Power= {Hint: you can use voltage divider (VD) or any other method.} (W)arrow_forwardIn the circuit shown, let R₁-7, R₂-12, R3-24, R4-2, V₁ =17, V2 -68, and V3-51, to calculate the power delivered (or absorbed) by the circuit inside the box, as follows: {NOTE: On Multiple Choice Questions, like this problem, you have only one attempt } 1. The current I is equal to (choose the closed values in amperes) -0.791 0 -0.756 3.022 0.756 (A) -3.022 0.791 2. The power delivered (or absorbed) (choose the closest value in watts) (W) 373.345 0 -373.345 -52.234 52.234 65.079 O-24.833 R₁ V₂ R3 R₂ www V3 V₁ www R4arrow_forward
- Determine X(w) for the given function shown in Figure (1) by applying the differentiation property of the Fourier Transform. x(t) Figure (1) -2 -1 1 2arrow_forwardFor a enahnced-type NMOS transistor with V₁=+1V and kn'(w/L)= 2 mA/V2, find the minimum VDs required to operate in the saturation region when VGS=+2 V. What is the corresponding value of ID?arrow_forward. Using Properties to find the Z-Transform including the region of convergence for x(n) = n (2)" cos(0.2π(n − 2))u(n − 1) - -arrow_forward
- Introductory Circuit Analysis (13th Edition)Electrical EngineeringISBN:9780133923605Author:Robert L. BoylestadPublisher:PEARSONDelmar's Standard Textbook Of ElectricityElectrical EngineeringISBN:9781337900348Author:Stephen L. HermanPublisher:Cengage LearningProgrammable Logic ControllersElectrical EngineeringISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education
- Fundamentals of Electric CircuitsElectrical EngineeringISBN:9780078028229Author:Charles K Alexander, Matthew SadikuPublisher:McGraw-Hill EducationElectric Circuits. (11th Edition)Electrical EngineeringISBN:9780134746968Author:James W. Nilsson, Susan RiedelPublisher:PEARSONEngineering ElectromagneticsElectrical EngineeringISBN:9780078028151Author:Hayt, William H. (william Hart), Jr, BUCK, John A.Publisher:Mcgraw-hill Education,
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