Electric Motor Control
Electric Motor Control
10th Edition
ISBN: 9781305177611
Author: Herman
Publisher: Cengage
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Chapter 3, Problem 8SQ

What does the electrician look for to remedy the following conditions:

  1. a. loud or noisy hum?
  2. b. chatter?
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If the Z-axis changes, what is the effect A circularly polarized wave, traveling in the +z-direction, is received by an elliptically polarized antenna whose reception characteristics near the main lobe are given approx- imately by E₁ = (2â, + jâ] f(r. 8. d) Find the polarization loss factor PLF (dimensionless and in dB) when the incident wave is (a) right-hand (CW) (b) left-hand (CCW) An elliptically polarized wave traveling in the negative z-direction is received by a circularly polarized antenna. The vector describing the polarization of the incident wave is given by Ei= 2ax + jay .Find the polarization loss factor PLF (dimensionless and in dB) when the wave that would be transmitted by the antenna is (a) right-hand CP (b) left-hand CP.
Medium 1 is a lossless dielectric (ε₁=ε,ε, μ₁=μ₁, σ₁=0) Medium 2 is a lossless dielectric (ε=&&₂, μ=μ₁, σ₁=0) [бг Мо о = = 0] [2 Mo σ₂ = 0] E₁ (z) = Ele² + Пe+jB₁²] E2 (z) = E Te² and tot = constant 1. For the case εr1 = 1, &r2= 16, E₁x=1 V/m and a frequency f = 750 MHz determine: λι = n₁ = 22 = n2= r = T= 2. The magnitude |E1 tot (z)| will show an interference pattern in region 1 as: E˜(z)=E,{1+Te®®]e¯MS =E||{1+Te^^^^\]e=##} | = |E|+Texp(j) For an incident field E₁x=1 V/m SKETCH the magnitude of E1 tot (z)| and |E20 (z) on the graph below. Plot the values at 2/4 increments and sketch between. What is the SWR?

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