【Daily Question: Pump Equipment】True or False Question, 2019.2.2

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This post was last edited by 156026692 on 2019-2-2 09:38. Rules for the multiple-choice questions in bg2.png: 1. If both questions are answered incorrectly, +2 wealth is awarded for active participation; if one question is answered incorrectly and the other correctly, +4 wealth is given; if both questions are answered correctly, +6 wealth is awarded. 2. If only one answer is provided, unless it is clear which question’s answer it is, a correct answer earns +4 wealth points, while an incorrect answer earns +2 wealth points; in all other cases, it is counted as active participation and awards +2 wealth points. 3. Rewards for answers are available once per person only. 4. Each reply allows scoring for only one person. 5. The answer and its explanation will be visible after responding. 6. The reward is valid for 48 hours; no reward will be given after that period. Studying* and winning awards again; come by here every day. 1: The excessive vibration level of magnetic pumps may be caused by an inadequate net positive suction head. ( ) 2. In vibration analysis, the horizontal axis of the spectrum graph represents the rotational speed, while the vertical axis represents the amplitude. ( ) Answer: Correct, Incorrect (In a spectrum graph, the horizontal axis represents frequency, while the vertical axis indicates the amplitude of each harmonic signal)