【Daily Question: Pump Equipment】True or False Question, 2019.9.9

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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 grants +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 if the deadline is exceeded. Studying* and winning awards again; come by here every day. 1. Use a VOC leak detection instrument to determine the leakage standards for ordinary pumps; if the leakage level exceeds 500 ppm, it is considered, from an environmental protection perspective, that the pump’s seal is leaking, and the seal needs to be repaired or replaced. ( ) 2. During vibration analysis, when the first harmonic constitutes the main component of the vibrations, the most common cause of this issue is misalignment. ( ) Answer: Correct, Incorrect (When the first harmonic is the dominant component, imbalance is usually more pronounced)