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108年公務人員高等考試三級考試試題 類科:輪機技術

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108年公務人員高等考試三級考試試題

科:輪機技術 目:輔機

考試時間: 2 小時 座號:

※注意: 禁止使用電子計算器。

不必抄題,作答時請將試題題號及答案依照順序寫在試卷上,於本試題上作答者,不予計分。

本科目除專門名詞或數理公式外,應使用本國文字作答。

代號:28350 頁次:1-1

一、試述離心式泵發生空蝕是如何形成?有何影響?如何減小離心式泵空 蝕危害?(20 分)

二、試述鍋爐內爐水所造成腐蝕與危害的主要原因為何?(20 分)

三、試述蒸餾式海水淡化裝置影響淡水產量降低的原因為何?(20 分)

四、試述冷凍系統中殼管式冷凝器的平常維護保養工作為何?(20 分)

五、請將下列英文譯成中文:(20 分)

Water transducer failure alarm is activated if the transducer is measuring less than 0.05% water content in the outlet oil. Since it is not possible to measure a water content below this value in this purifier system, this limit is used to indicate a fault condition of the transducer. This failure could be loose connections, faulty oscillator unit, etc. After repair of transducer, we have to reset the control program before it is possible to start the purifier.

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