阿摩線上測驗
登入
首頁
>
中山◆電機◆電磁學
>
103年 - 103 國立中山大學_碩士班招生考試_電機系(戊組)、電波領域：電磁學#110204
>
題組內容
1.(20%)
(a) (10%) Determine the self-inductance of a toroidal coil of N turns of wire wound on an air frame with mean radius ri and a circular cross section of radius a.
其他申論題
(D)How to improve the power factor to 0.95. (5pt)
#471736
1.Find minimum inductance L to keep the converter operated in continuous conduction mode.(10pt)
#471737
2.Ripple current on the inductor. (10pt)
#471738
3.Draw waveforms of both diode voltage and inductor current. (10pt)
#471739
(b) (10%) Obtain an approximate expression assuming a << r1 in the part (a).
#471741
(a) (10%) Determine Vin the plane bisecting the line charge.
#471742
(b) (10%) Determine E from ρ directly by applying Coulomb's law.
#471743
(a) (10%) Assume that the plates aire perfect electric conductors, then find the E and H field components between the plates. Neglect the edge effects of the finite plates.
#471744
(b) (10%) Find the separation d between the plates that creates resonance.
#471745
(c) (10%) Derive an expression for the Q of the cavity assuming a conductivity of o for the plates. Neelect any radiation losses through the sides of the cavity.
#471746
阿摩線上測驗
登入