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• 47. 有一分激式直流發電機，其應電勢為 50 伏特，滿載端電壓為 40 伏特，試求此發電機之電壓調整率為(%)？(A) 10%(B) 15%(C) 20%(D) 25%
• 48. 三相四極感應電動機，定子電源為 60Hz，若以外力使其轉子以 600rpm 的速度反磁場方向旋轉，該轉子的感應電勢頻率為？(A) 40 Hz(B) 60 Hz(C) 80 Hz(D) 100
• 49. 6 極、60Hz 之繞線型感應電動機，若在滿載時的轉速為 1152rpm，又二次側每相之電阻為 4Ω，欲使轉速降為 960rpm，則應插入外部電阻值為？(A) 6Ω(B) 12Ω(C) 14Ω
• 50. 12kW，100V 之直流分激式發電機，磁場電阻為 20Ω，電樞電阻為 0.08Ω，鐵損及機械損之和為 1250W，試求滿載效率是多少？(A) 75%(B) 77.5%(C) 80%(D) 8
• 1. 教師的教學宜適度考量與結合青少年文化，或有事半功倍之效。下列對於「青少年文化」的描述，何者有誤？(A) 泛指青少年同儕所為之各種偏差行為(B) 往往因為處境相似以及互動自由而集結(C)具有如同「
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• 59. In Microsoft Excel, cell A1 is the value -8, cell A2 is the value -4, cell A3 is the value -2,ce
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• 13. 如圖，是半徑為 R 的圓的一條直徑，該圓處於均勻電場中，電場強度為 E，在圓周平面內，將一帶正電 q 的小球從 a 點以動能相同、但方向不同拋出，小球會經過圓周上不同的點，在這些點中，到達 c
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