有關使用多功能數位電錶之安全事項，下列敘述何者正確？

汽車修護 · 甲級 · 汽車相關技術資料運用 · Q53

Always insert the meter in the circuit in series for current measurements.

Never apply in a circuit of higher amperage than the meter is capable of measuring safely.

Always start measuring with the Ammeter on the highest scale and work your way down.

Always start measuring with the Voltmeter on the lowest scale and work your way down.

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本題採複選設計，要求綜合檢視多項標準程序之合理性，提升資訊處理門檻。命題結構將實務中易混淆的操作順序與量程策略進行對比編排，需脫離表面直覺，依據儀器防護機制與作業規範進行交叉驗證。此種強調基礎邏輯綜合應用與誘導排除之設計，符合中等難度之結構特徵。

① Always insert the meter in the circuit in series for current measurements.:測量電流時，電錶必須以串聯方式接入電路，此為安培計的基本接線原理，可確保電流全部流經電錶內部分流器以獲得正確讀數。
② Never apply in a circuit of higher amperage than the meter is capable of measuring safely.:使用電錶時不可超過其額定電流容量，否則會導致內部保險絲熔斷或元件損毀，甚至引發安全危險，這是使用任何量測儀器的基本安全規範。
③ Always start measuring with the Ammeter on the highest scale and work your way down.:使用安培檔測量時應先從最高量程開始，再逐步下調至合適刻度，可避免未知大電流瞬間衝擊電錶而造成過載損壞。

④ Always start measuring with the Voltmeter on the lowest scale and work your way down.:使用伏特計測量電壓時，正確做法應從最高量程開始逐步下調，而非從最低量程開始；若從最低量程開始，遇到高電壓時會造成電錶過載而損壞。

"此題常考電流串聯、電壓並聯的基本接線原則，以及先高後低的量程選擇策略。實務操作時，務必確認電錶的CAT安全等級與最大量程，避免在未知電路條件下直接接入低量程檔位，這是技能檢定中極易混淆的考點。"

①Always insert the meter in the circuit in series for current measurements.0%

②Never apply in a circuit of higher amperage than the meter is capable of measuring safely.0%

③Always start measuring with the Ammeter on the highest scale and work your way down.0%

④Always start measuring with the Voltmeter on the lowest scale and work your way down.0%

此答題分佈是根據學員在 LongePass 模擬考等實際作答紀錄計算而成。與考友分享這道歷屆試題與詳細解析！