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104年 - 104 國立中山大學_碩士班招生考試_電機系(丁組)：電路學#109113

科目：中山◆電機◆電路學 | 年份：104年 | 選擇題數：0 | 申論題數：6

試卷資訊

所屬科目：中山◆電機◆電路學

選擇題 (0)

申論題 (6)

(a) (10%) Estimate L and R.
(b) (10%) Estimate the average power consumed by the motor.
(c) (20%) Connect balanced Y-connected capacitors in parallel with the motor to increase the power factor. Determine the capacitance value in each phase so that the power factor is close to 1. 

PROBLEM 2 (20%) Figure 2(b) displays the Bode magnitude plot of a lowpass filter in Fig. 2(a). Estimate the values of R and C.
  62ce7bf5b0158.jpg62ce7c633520a.jpg

PROBLEM 3 (20%) Determine the values of R and C in Fig. 3 so that the average power dissipation on resistor R is maximized.
62ce7cac47593.jpg
PROBLEM 4 (20%) The two inductors in Fig. 4 are unity coupled. Find the transfer function I2(s)/ I1(s). 62ce7cdf10c69.jpg