Concept explainers
A sinusoidal wave on a transmission line is specified by voltage and current in phasor form:
where V0, and I0 are both real. (a) In which direction does his wave propagate and why? (b)It is found that
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Engineering Electromagnetics
- Given two different dielectrics, or a dielectric and a conductor, the magnitude of the electric field is smaller in the region of smaller permittivity (unless 8₁-8₂90°, where its magnitude is unchanged). False O True E1 DN1 n D₂ 0₂ 0₁ DN2 Dian 2 82 D₁ Dian 1arrow_forwardQuestion 1 From the waveform shown in the figure, determine the parameters of the harmonic voltage u(t) = Umcos (2nft + Po). 0.4 0.2 wwwwwww 0 -0.2 -0.4 1.6 1.8 0.6 0.8 1.2 0.4 1 0 0.2 Время, мс Answer options: a) amplitude Um=0.3 V; frequency f= 5 kHz; initial phase Po= -90 deg. b) amplitude Um=0.3 V; frequency f= 5 kHz; initial phase po 90 deg. c) amplitude Um=0.3 V; frequency f= 2 kHz; initial phase po= -180 deg. d) amplitude Um=0.3 V; frequency f= 1 kHz; initial phase po= 0 deg. So 的 Question 2 Using the oscillogram of a periodic sequence of rectangular video pulses u(t) shown in the figure, determine the following parameters of the sequence: amplitude, pulse duration, pulse repetition period, and delay time. Au(t), B 1.0 0.5 t,MC 0t 1 2 3 4 5 6 7 8 9 10 11 12 13 Answer options: time t₁ = -0.5 ms. a) amplitude E=1 V; pulse duration t-3 ms; repetition period T-9 ms; delay delay time ta = 0.5 ms. b) amplitude E-1 V; pulse duration t; =3.5 ms; repetition period T=9.5 ms; delay time t…arrow_forward1. Sketch the Polar plot of each of the following complex functions: a. P(jo) =o (cos 45° + j sin 45°) b. P(jø)=0.707o (1+ j)+1arrow_forward
- (a) Determine τ τ = 66.67ms (b) Write the mathematical expression for the voltage VL using the definedpolarities and direction. VL= -12Ve-t/66.67ms (c) Write the mathematical expression for the current IL using the definedpolarities and direction. IL = -400mA(1 - e-t/66.67ms) (d) Sketch the waveforms of vL and iLarrow_forwardwhat is the value of P( z < 1.25)arrow_forwardQuestion 2 In a certain media with u = µo, plan wave electric field is given by E(z,t) = 50 cos(10°t + 2z)a, V/m intrinsic impedance equals to 0.442 m2 0.992 m2 0.882 m2 None of These A Moving to another question will save this response.arrow_forward
- In a certain media with u = µo, plan wave electric field is given by %3D E(z,t) = 50 cos(10°t +2z)a, V I m intrinsic impedance equals to 0.882 m2 0.442 m2 0.992 m2 None of Thesearrow_forwardquestion will save this response. Question 4 In a certain media with u = µo, plan wave electric field is given by E(z,t)= 50 cos (10°t +2z)a, V / m intrinsic impedance equals to 0.992 m2 0.882 m2 0.442 m2 None of These ET/-4/TEarrow_forwardChange from Polar Form into Rectangular Form 69.853∠26.697° Ωarrow_forward
- 2) Convert these from polar to rectangular form: a) 1045° b) 0.4290° a) b)arrow_forwardFind the electric field Intensity at P (4,2,-8) due to PL1 = 40nC/m along the x-axis and PL2 = 40nC/m along the y-axis a. 143 ax - 85 ay - 72 az V/m b. 32 ax + 72 ay - 85 az V/m c. 36 ax + 21 ay - 157 az V/m d. 36 ax + 57 ay - 157 az V/marrow_forward11. X-rays with a wavelength of 1, = 9.587 pm are used in a Compton scattering experiment (i.e. the photons are scattered by essentially free electrons). What is the energy, E , of the incident photons in eV? а. b. When the Compton scattered X-ray scatters to an angle (measured from the direction of the incident X-ray) of 0 =145.0°, what is the wavelength of the Compton scattered X-ray? When the Compton scattered X-ray scatters to an angle (measured from the direction of the incident X-ray) of 0 =145.0°, what is the change in energy for the X-ray photon in eV (or the difference in energy between the scattered photon and the incident photon)? d. с. When the Compton scattered X-ray scatters to an angle (measured from the direction of the incident X-ray) of 0 =145.0°,what is the change in kinetic energy for the scattered electron in eV?arrow_forward
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