Electrical Motor Controls for Integrated Systems
5th Edition
ISBN: 9780826912268
Author: Gary Rockis;Glen A. Mazur
Publisher: American Technical Publishers
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Chapter 7.2, Problem 3CP
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To explain: The reason for adding the shading coil to the solenoid armature.
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Electrical Motor Controls for Integrated Systems
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- A plane wave propagating through a medium with ɛ, = 8, μ, 2 has E = 0.5 e-3 sin(108tẞz) a, V/m. Determine (a) B (b) The loss tangent (c) Wave impedance (d) Wave velocity (e) H field Answer: (a) 1.374 rad/m, (b) 0.5154, (c) 177.72 /13.63° 2, (d) 7.278 × 107 m/s, (e) 2.817e3sin(108 - Bz - 13.63°)a, mA/m.arrow_forwardIn a nonmagnetic medium, E = 50 cos (10% - 8x) a, + 40 sin (10't - 8x) a, V/m find the dielectric constant &, and the corresponding H.arrow_forwardA uniform plane wave in air with E = 8 cos (wt 4x - 3z) a, V/m is incident on a dielectric slab (z0) with pr = 1.0, 8, = 2.5, σ = 0. Find (a) The polarization of the wave (b) The angle of incidence (c) The reflected E field (d) The transmitted H fieldarrow_forward
- A plane wave in a nonmagnetic medium has E = 50 sin (10% + 2z) a, V/m. Find (a) The direction of wave propagation (b) λ, f, and ε, (c) H Answer: (a) along -z direction, (b) 3.142 m, 15.92 MHz, 36, (c) 0.7958 sin(10% + 2z) a A/m.arrow_forwardThe magnetic field component of a plane wave in a lossless dielectric is = (a) If μ, 1, find ε,. H = 30 sin (2 × 10 - 5x) a, mA/m (b) Calculate the wavelength and wave velocity. (c) Determine the wave impedance. (d) Determine the polarization of the wave. (e) Find the corresponding electric field component. (f) Find the displacement current density.arrow_forwardMedium characterized by, σ = 0,μ = 2μ。 and e = 56 .If H = 2 cos(wt-3y) azcalculateE, warrow_forward
- A uniform wave in air has E10 cos (2 × 10°t - ẞz) a, (a) Calculate ẞ and λ. (b) Sketch the wave at z = 0, №4. (c) Find H.arrow_forwardengineering electromagnetics subjectarrow_forwardD8.2. The field B = -2ax + 3ay + 4a, mT is present in free space. Find the vector force exerted on a straight wire carrying 12 A in the aAB direction, given A(1, 1, 1) and: (a) B(2, 1, 1); (b) B(3, 5, 6). Ans. -48ay +36a, mN; 12ax - 216ay + 168az mNarrow_forward
- 3 In a certain medium If μ = - E = 10 cos (2 x 10't ẞx)(a, + a.) V/m 50μo, ε = 28, and σ 0, find ẞ and H.arrow_forwardA plane wave propagating through a medium with &,,-8 μr = 2 nas: E = 0.5 e-j0.33z sin (108 t - Bz) ax V/m. Determine (a) ẞ (b) The loss tangent (c) Wave impedance (d) Wave velocity (e) H fieldarrow_forwardIn a medium, E = 16e 0.05x sin (2 x 102x) a₂ V/m find: (a) the propagation constant, (b) the wavelength, (c) the speed of the wave, (d) the skin depth.arrow_forward
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