pipe 261-280
Authored by 洪立翰 洪立翰
Social Studies
9th Grade
Used 9+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1 卡等於多少焦耳？
0.24
4.2
10
1000
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1 BTU的熱量等於多少卡？
4.2
252
460
746
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
電動機名牌所註明之電流係指
滿載電流
空載電流
半載電流
80％滿載電流
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
電動機名牌上標示之馬力數係指其
效率
損失
輸出功率
輸入功率
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
冷氣機若運轉之負載不變，假設供電電壓比額定電壓低時，其負載電流？
降低
升高
先減後增
先增後減
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
電路供應工業用紅外線燈電熱裝置者，其對地電壓應不超過多少伏為原則？
110
150
220
380
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
電源頻率由60赫(Hz)變成50赫(Hz)時，下列哪一器具之阻抗值較不受影響？
白熾燈
變壓器
感應電動機
日光燈
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