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97年 - 97年高等一級暨二級2級_電力工程#38958
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二、試繪感應電動機單相等效電路,並說明之。(20 分)
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3. Please describe the mechanisms of hypotension induced by spinal blockade with local anesthetics, and how to treat? (20%)
#115720
4. What are the causes, symptoms and treatment of acute hemorrhagic conjunctivitis? (20%)
#115721
5. A 20-year-old male with a history of having taken NSAIDs for one week suddenly developed severe abdominal pain after dinner. In the emergency service, he was found to have diffuse abdominal tenderness and pain. What is the most probable cause? How would you approach to get the definite diagnosis and how would you treat? (20%)
#115722
一、假設一變壓器二次側開路,一次側加壓V(t) =100cos(ωt) ,吾人量得一次側電流 i(t) = 3cos(ωt − 30°),若繞組電阻漏電抗可被忽略,試求鐵損電流均方根值。(20 分)
#115723
【已刪除】三、請以下圖畫出同步機之Eaf、Ia及Φf相量圖(Phasor diagram),並解釋之。(20 分)
#115725
四、凸極式同步馬達,Xd = 0.85 標么,Xq = 0.6 標么,若外加額定電壓正常,場繞電流 為零,在不喪失同步條件下,馬達所輸出功率是額定功率的百分之幾?(20 分)
#115726
五、一分激直流電動機(Separately excited DC motor),其端電壓為 130(V),電樞電 阻為 1.1Ω,求當轉速為零時,電樞穩態電流大小。(20 分)
#115727
一、以儀器進行定量分析必須先製作檢量線(calibration curve)。檢量線的製作方法可 區分為外標準法(external standard method)及內標準法(internal standard method) 兩類。試說明這兩類分析方法的差異性,並舉例說明適用的儀器及適用的原因。如 果分析樣本的基質(matrix)複雜,且有顯著的基質效應(matrix effect)應如何進 行定量比較理想,試詳細說明之。(25 分)
#115728
⑴兩層 析峰的理論板數(number of theoretical plate);⑵平均板高(plate height);
#115729
⑶兩物質的容量因子(capacity factor);⑷解析度(resolution);⑸選擇因子 (selectivity factor)。(25 分)
#115730