L4-G1_模擬平交道-3

L4-G1_模擬平交道-3

6th - 8th Grade

10 Qs

quiz-placeholder

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L4-G1_模擬平交道-3

L4-G1_模擬平交道-3

Assessment

Quiz

Computers

6th - 8th Grade

Hard

Created by

Yan Yu Yan

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10 questions

Show all answers

1.

OPEN ENDED QUESTION

30 sec • Ungraded

1.生活中有那些裝置有蜂鳴器功能?(最少一項)

Evaluate responses using AI:

OFF

2.

MULTIPLE CHOICE QUESTION

45 sec • 10 pts

2. 蜂鳴器分"有源"與"無源" 有源蜂鳴器:包含「振盪電路」,此振盪電路只要通電,就會產生一個固定頻率變化的脈波只能發出單一頻率的聲音。優點是容易控制,缺點是聲音不能改變、價格較高。 無源蜂鳴器:不包含「振盪電路」,振動時所需的脈波頻率必須自己加以設定控制。 優點是電路簡單、價格較低、聲音頻率可以改變,缺點是控制較為複雜。 請問我們教具板使用的是哪一款蜂鳴器?

有源蜂鳴器
無源蜂鳴器

3.

OPEN ENDED QUESTION

45 sec • Ungraded

3.伺服馬達可以控制轉動角度,請問可控制的範圍是多少?

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4.

MULTIPLE CHOICE QUESTION

45 sec • 10 pts

4.直流減速馬達:可控制轉速與方向,下面旋轉方向對應的方向何者正確?

轉速>0(正數),旋轉方向為正轉/轉速<0(負數),旋轉方向為反轉
轉速>0(正數),旋轉方向為反轉/轉速<0(負數),旋轉方向為正轉

5.

MULTIPLE CHOICE QUESTION

30 sec • 10 pts

5.直流減速馬達的極限值?

150
200
255
360

6.

MULTIPLE CHOICE QUESTION

30 sec • 10 pts

(是非題) 6.燈條PWM的意思是腳位不斷切換"有電"、"沒電"的狀態

7.

MULTIPLE CHOICE QUESTION

45 sec • 10 pts

7.超音波可以偵測各種材料,哪一種材料對於超音波偵測更加友善(可以的偵測到正確距離)

大型、平坦、堅固的,如金屬、陶瓷、玻璃或木材
鬆軟、不規則的表面,如顆粒、鋸屑或泡沫

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