批踢踢實業坊 Examination 板: [考題] 電機機械問題－2016徵求年菜推薦網路訂購最紅的商家.年菜訂購?台北年菜外送餐廳推薦(年菜)?年菜.今年不想做年菜推薦,網路宅配哪一家好?

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批踢踢實業坊 Examination 板

[考題] 電機機械問題

Jul 3rd 2013, 15:31, by sweetycool

作者sweetycool (tina)

站內Examination

標題[考題] 電機機械問題

時間Wed Jul 3 15:31:17 2013

出處:99 年機械技師 1. http://ppt.cc/MJ7R (題目) http://ppt.cc/iaqO (我的解答) 這題我有點疑問,題目給的額定視在功率,頻率是寫在負載側嗎? 因為我由高壓側轉到低壓側之後再驗算一次視在功率發現算出來是 4400∠-25.84 ≠ 5000∠25.84 也就是題目給的額定視在功率不知道為什麼會這樣子呢? 2. 我想在確定幾件事情 http://ppt.cc/A36g (1)感應電動機的輸入功率是在定子側,輸出功率是在轉子側嗎? (2)直流與同步電動機的輸入功率是在端電壓側,輸出功率是在電樞側嗎? (3)直流與同步發電機的輸入功率是在電樞側,輸出功率是在端電壓側嗎? (4)變壓器的輸入功率是在非負載側,輸出功率是在負載側嗎? (5)題目給的額定視在功率,額定電壓,額定電流等都與前列(1)~(4)的輸出功率同側嗎? 3. http://ppt.cc/hZlh 想問一下這兩種圖有甚麼差別嗎?看有的書是畫成左邊的圖,有的書是畫成右邊的圖謝謝 -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 1.34.105.117

推 bornagain06:第一題他只說給額壓沒說給額定負載 07/03 15:39

她題目不是有說規格是5KVA嗎規格不就等於是額定嗎?所以我放在負載端

→ bornagain06:第三題就變壓器而言左邊比較正確 07/03 15:41

※ 編輯: sweetycool 來自: 1.34.105.117 (07/03 15:55)

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