【Daily Question: Pump Equipment】Fill-in-the-blank question, April 11, 2019
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This post was last edited by 3983596_FPPZ on 2019-4-11 at 13:49, with bk12.jpg being modified as well. It was last edited by 3983596_FPPZ on 2019-4-6 at 12:34. 1. Those who get both questions wrong receive +2 Wealth for active participation; those who get one question wrong and one right receive +5 Wealth; those who get both questions right receive +8 Wealth. 2. If only one answer is provided, unless it is clear which question’s answer it is, a correct answer earns +5 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. In the operation of a centrifugal pump with a monotonous performance curve, if the outlet back pressure increases, then within the normal operating range of the pump and with all other conditions unchanged, the pump’s flow rate ( ) and head ( ). Answer: decreases, increases
Shrink, expand (both within the limits of the cut-off head, without considering the minimum flow rate required for thermal control)
If the outlet backpressure increases while the centrifugal pump is in operation, with all other conditions remaining unchanged, the pump’s flow rate (increases) while the head (remains unchanged)