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工芸基礎知識(選択問題)20180604

2018-06-04View Original

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この投稿は最終的にHP0377によって2018年6月4日07:36に編集されました。工程基礎知識(選択問題)20180604:ポンプの吸込圧力が低すぎることで作動が異常になる根本的な原因は何か。 A. 効率が低すぎる B. 作業電流が大きすぎる C. 動く部品が受ける圧力差が大きすぎる D. 「キャビテーション」現象が発生する ヒント:吸込み圧力が液体の飽和蒸気圧よりも低いと「キャビテーション」が発生する。

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