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102年 - 102 國立中山大學_碩士班招生考試_電機系(丁組)：電路學#110202
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2. (10pt) Find v
0
of the following circuit. Assume ideal OP amplifier.
其他申論題
六、求？(20 分)
#471724
(5%) A point charge Q exists at (0, d, 0) in space, as shown in Figure (a). Using Theory of image, a point charge of -Q exists at (0, -d, 0) symmetrically, as indicated in Figure (b). The dielectric constant of the space is εo. Write the electric intensities (Ex|y=0, Ey|y=0, and Ez|y=0) for a point on the ZX-plane in terms of (d and R), or (d and r), as indicated in Figure (b).
#471725
(5%) What is the surface charge distribution on the ZX-plane? Sketch the distribution.
#471726
1.(10pt) A rechargcable battery is capable of delivering 100mA for 10 hours. How much charge can it release at that rate? If the terminal voltage is assumed as 3V, how much energy can the battery deliver?
#471727
3.(10pt) A balanced Y-connected load is connected to the generator by a balanced transmission line with impedance of 0.1+j0.2Ω per phase. The load is rated at 500kW, 0.866 power factor lagging, 254Vms phase voltage. Find line current and line voltage of the generator, respectively?
#471729
4.(10pt) Phase voltage and phase current of a load are given as v(t)=141cosotV, i()=14sin(ωt+30°) A. Find average power and reactive power of the load.
#471730
(a) RMS current. (5pt)
#471731
(b) Average power consumed by the resistor. (5pt)
#471732
(A)Calculate I. (5pt)
#471733
(B)Calculate IL. (5pt)
#471734
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