問題詳情
一、三相電壓或電流均分別以零相序，負相序及正相序所共同組成，例如 IA=IA0+IA2+IA1，試問在正常三相平衡供電情形下，三相電流與零相序、負相序及正相序相量電流以相量圖說明其相互關係？（15 分）感應電動機三相供電電流持續含有 5%負相序電流，試問此電動機會發生何種物理現象？（5 分）並以相量圖表達在某瞬間之三相電壓。（5 分）
參考答案
無參考答案
內容推薦
- Don't _______ him to make any donations. As a matter of fact, he is completely broke now.(A
- In the following reaction, which compound is the major product?
- 有關法定傳染病通報、調查及採樣，下列敘述何者為非？(A)麻疹疑似個案如為 1 歲以下嬰兒，需要加採母親血清送檢 (B)德國麻疹個案需於通報後 48 小時內，由衛生所人員完成疫情調查 (C)目前疑
- 有關登革熱病媒蚊生態及習性，下列敘述何者為非?(A)埃及斑蚊相當敏感，吸血時極易受到人類輕微的動作而飛走 (B)白線斑蚊喜於棲息室外，埃及斑蚊棲息在室內 (C)斑蚊卵具抗旱及耐低溫能力，白線斑蚊
- 【圖13】BC鋼線直徑d=l/8吋，AB木支柱斷面為1平方吋，垂直力P=400 lb，B點之橫向位移為何？（鋼線彈性係數Es =30xl06psi，木材彈性係數Ew = 5xl06psi)(
- To get to their _______, the hikers had to climb a steep hill and then cross a river by boat.(A)
- Matilda’s troubles at home help account for her odd behavior at school.(A) develop (B) explain (
- 有關桃園縣政府衛生局推廣的「桃園健康餐盤」APP，其功能特色，下列敘述何者為真?①透過 APP 行動裝置，隨時隨地記錄每一天的體重及腰圍②配合每日活動量及身體質量指數(Body Mass Ind
- 桃園縣政府衛生局於 100 年成為世界衛生組織高齡友善城市聯盟(WHO GlobalNetwork of Age-friendly cities)網絡會員，有關其八大面向(eightdomain
- President George W. Bush was criticized by Senator John Kerry for rushing to war with Iraq withou
內容推薦
- This website provides useful _______ for teaching English. You should check it out.(A) materials
- The official _____ the meat in that factory and found it to be unsatisfactory.(A) constructed (B)
- With that crack in it, the vase is worth practically nothing.(A) nearly (B) politely (C) deeply
- One of Mary’s _______ to finding a job was to tell everyone she met that she was looking for wor
- 二、對話測驗 10%Mary: My dad is in the hospital now.George: Is it anything serious?Mary: _______. He m
- Operator: Thank you for calling Gold Hotel. How may I help you?Cynthia: _______Operator: I'
- These days, more and more teenagers are taking up the habit of smoking. There are many reasons that
- People have always been obsessed with their appearance. But with the introduction of plastic __41___
- Check-out Clerk: That will be thirty-five dollars and fifty cents.Customer: I didn't bring
- (A) are aimed (B) aimed (C) aiming (D) that aimed
- (A) Over (B) With (C) Since (D) Without
- Some people find it tough to make friends because they're always worried about how people see t
- Rachel: Guess what? I've heard that George has a crush on you.Rene: George who?Rachel: Geor
- (A) Whatever (B) However (C) Whoever (D) Whenever
- (A) Instead (B) Fortunately (C) Furthermore (D) Strictly
- How can the Internet help people who are shy?(A) It gives them time to think before they spe
- Boss: I've decided to transfer you to the sales department.Max: Why? I enjoying working for
- 一、請說明測量極低電阻用凱文電橋（Kelvin Bridge）之基本原理。（20 分）
- (A) take care of (B) consist of (C) pass on (D) keep in mind
- (A) call (B) called (C) calling (D) is called
- How can the Internet hurt people who suffer from low self-esteem?(A) Their negative messages
- 三、克漏字測驗： 40% Hawaii is the only island state in America. That is, it is the only U.S. state __26___
- (A) began (B) begin (C) begins (D) beginning
- (A) incredible (B) odd (C) awful (D) irritable
- Fill in the blank based on the reading: "Jane is anxious when she meets new people so s