民國114年 第1梯次 汽車修護甲級 學科
第62題
有關使用多功能數位電錶之安全事項,下列敘述何者正確?
題目
有關使用多功能數位電錶之安全事項,下列敘述何者正確?
- (1) Always insert the meter in the circuit in series for current measurements.
- (2) Always start measuring with the Voltmeter on the lowest scale and work your way down.
- (3) Always start measuring with the Ammeter on the highest scale and work your way down.
- (4) Never apply in a circuit of higher amperage than the meter is capable of measuring safely.
官方答案
(1) Always insert the meter in the circuit in series for current measurements.、(3) Always start measuring with the Ammeter on the highest scale and work your way down.、(4) Never apply in a circuit of higher amperage than the meter is capable of measuring safely.
解析
電流必須串聯量測(1),故電流表(Ampere)應以最高檔位起測再逐漸下降以保護儀表(3);此外使用多功能數位電錶時,絕對不可超過其額定電流值進行量測(4),否則易燒毀保險絲或儀表。至於電壓表應採並聯量測,且量測未知電壓時一般應由較高電壓檔位起測,而非由最低檔位起測,故選項2錯誤。
AI 參考解析（推得答案已與官方答案比對一致），非官方公告內容，僅供備考參考。