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研究所、轉學考(插大)◆電磁學
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110年 - 110 國立臺灣大學_碩士班招生考試_工程科學及海洋工程學研究所丙組:電磁學(B)#100941
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題組內容
3. (20%) A current distribution is given in cylindrical coordinates by
(a) Find the magnetic field everywhere.
其他申論題
(a) Please derive the state space equation of the closed-loop control system. (10%)
#423008
(b)Please solve the gain Ka and K, for the closed-loop poles located at-2 ± j2.(15%)
#423009
1. (15%) A magnetic field is given in the xz-plane by, Wb/m2. Consider a regid square loop situated in the xz-plane with its vertices at (x, 0, 1), (x+1,0, 1), (x+1,0, 2), and (x, 0, 2). Find the emf induced around the loop in the sense defined by connecting the above points in succession.
#423010
2. (15%) Charge is distributed with uniform density p0, C/m3 in the spherical region a＜s ＜2a. Find the electric displacement field everywhere.
#423011
(b) Find the energy stored in the magnetic field of the current distribution per unit length in the z-direction.
#423013
4. (15%)Let us consider the charge distribution given bywhere ρo is a constant. Find the electric displacement field everywhere.
#423014
5.(15%) For a uniform plane wave propagating in the -z-direction in a material medium withσ=0, 6=4εo, μ=μo , the magnetic field intensity in the z=0 plane is given by (a) Find the impedance of the medium for the field.
#423015
(b) Find the phase velocity of the wave.
#423016
(c) Find the associated electric field
#423017
(a) Find on the surface x=o.
#423018
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