電機機械問題 - 考試
By Carolina Franco
at 2013-06-02T23:18
at 2013-06-02T23:18
Table of Contents
某四極60赫之三向感應電動機,其滿載速率為
(A)2000(B)1800(C)1740(D)1000
答案給C但是我是覺得是B
解法是120f/p=1800,還是我想得太簡單?
已知一單向10KVA,200/100V,實驗用變壓器,其高壓測膽效電阻0.08Ω,鐵損100W,
此變壓器效率最高時負載是多少KVA?
(A)10(B)7.07(C)5(D)2.5
額定5KV,200/100,60HZ之單向變壓器,經短路實驗得一次射(200V測)的等笑電阻為1Ω
若變壓器供應功率因素為1之負載,且在變壓器額定容量的80%時發生最高效率時
的總損失為多少?(A)400W(B)600W(C)800W(D)100W
請教這下面兩題有人給方向嗎?謝謝
--
(A)2000(B)1800(C)1740(D)1000
答案給C但是我是覺得是B
解法是120f/p=1800,還是我想得太簡單?
已知一單向10KVA,200/100V,實驗用變壓器,其高壓測膽效電阻0.08Ω,鐵損100W,
此變壓器效率最高時負載是多少KVA?
(A)10(B)7.07(C)5(D)2.5
額定5KV,200/100,60HZ之單向變壓器,經短路實驗得一次射(200V測)的等笑電阻為1Ω
若變壓器供應功率因素為1之負載,且在變壓器額定容量的80%時發生最高效率時
的總損失為多少?(A)400W(B)600W(C)800W(D)100W
請教這下面兩題有人給方向嗎?謝謝
--
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