問題詳情
9.下列何種元件可以用來消除繼電器的逆向脈衝?
(A)電阻器
(B)電容器
(C)二極體
(D)電阻器及電容器串聯。
(A)電阻器
(B)電容器
(C)二極體
(D)電阻器及電容器串聯。
參考答案
答案：C
難度：非常困難0
統計：A(0),B(1),C(0),D(0),E(0)
內容推薦
- 電子實習用的焊錫主要材料為： (A)純錫 (B)錫銅合金 (C)錫鋁合金 (D)錫鉛合金。
- 27寶華山位於鹿野鄉。(A)O(B)X
- 2 v. to take away part of a whole; to remove; to deduct(A) pleasure (B) display (C) adhere (D) subtr
- 有關放大電路的負回授，下列敘述何者有誤？ (A)頻寬增加 (B)增益下降(C)對串聯回授而言會降低輸入阻抗 (D)對電壓回授而言會降低輸出阻抗。
- 10 v. to send; to convey; to transmit; to promote; to advance(A) anger (B) forward (C) overlook (D)
- 承第五題，更換較大的電容，下列敘述何者正確? (A)功用與更換較高轉態電壓的DIAC相同 (B)燈泡的亮度不會改變 (C)功用與調整VR的電阻值變小相同 (D)燈泡的亮度會變得更亮。
- 如圖(二)所示的電晶體電路，假設β=100，VBE(sat)=0.7 V，VCE(sat)=0.2 V，Vi=5 V，求使電晶體停留在飽和區之最大 RB值為多少 ? (A) 204 KΩ (B
- 9 v. to smooth wood; to make smooth; to remove rough areas(A) monetize (B) guess (C) disclaim (D) pl
- 26臺東縣臺11線最北之鄉為長濱鄉。(A)O(B)X
- 下列何者不是狀態函數？(A) 功 (B) 內能 (C) 焓 (D) 熵
內容推薦
- 若指針式三用電表內部3V電池沒電時，則下列測量何者無法執行？ (A)直流電壓 (B)交流電壓 (C)直流電流 (D)電阻。
- 2 n. forming of mental pictures to control bodily processes(A) benefit (B) lumber (C) imaging (D) or
- 使用指針式三用電表來測量7815的輸出電壓時，置於何檔較為恰當? (A)ACV50V檔 (B)ACV250V檔 (C)DCV50V檔 (D)DCV250V檔。
- 2 n. picture in a book or other work; explanation; clarification(A) offensive (B) acceptance (C) ill
- 4 n. series of activities organized to accomplish a goal(A) attachment (B) sight (C) concern (D) cam
- 2 v. to make whole; to finish; to perfect(A) complete (B) agree (C) build (D) realize
- 3 n. place where one is going; the purpose for which something is destined(A) minority (B) attorney
- 6 v. to fit; to match; to satisfy; to please; to clothe(A) suit (B) come across (C) prohibit (D) pol
- 9 v. to propose; to mention; to imply; to hint; to evoke(A) reference (B) observe (C) suggest (D) su
- 3 v. to refuse; to go down; to decrease; to fall(A) segment (B) decline (C) industrialize (D) lease
- 7 n. material coherence; firmness; persistence; steadfastness(A) logistics (B) arrest (C) consistenc
- 5 n. type of dessert; cake; baked dish consisting of a crust and filling(A) assortment (B) violation
- 6 v. to sharpen; to provide with a border; to advance gradually or furtively(A) handle (B) edge (C)
- 承第4題，流經稽納二極體之電流為多少？ (A)0mA (B)10mA (C)20mA (D)30mA。
- 4 v. to assign to a particular post or position; to appoint(A) station (B) condition (C) classify (D
- 8 v. to start; to run; to activate; to inaugurate; to break into(A) firm (B) perceive (C) launch (D)
- 5 n. acknowledgment; identification(A) mention (B) recognition (C) vending machine (D) record
- 7 n. embarrassing situation; predicament; location; position (i.e. of a ship or individual)(A) fix (
- 4 adj. unofficial; relaxed; casual; easy; laid-back(A) stock (B) valuable (C) aware (D) informal
- 5 v. to train; to certify; to meet the minimum standards; to moderate; to modify(A) get over (B) inv
- 3 v. to resuscitate; to bring back to life; to put into action again(A) constrain (B) staff (C) remi
- 2 n. house; dwelling; structure; premises(A) building (B) coverage (C) monitor (D) terminal
- 8 adj. essential; regularly used; primary; principal; main (of goods or products)(A) effective (B) s
- 10 v. to oppose; to retaliate; to react; to strike back(A) suppose (B) certificate (C) counter (D) d
- 6 v. to finish; to infer; to deduce; to make a decision(A) conclude (B) lend (C) allot (D) presume