【Daily Question: Pump Equipment】Multiple-choice Question 2018.12.12

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This post was last edited by 3983596_FPPZ on 2018-12-12 08:12. For bk12.jpg: Rules for multiple-choice questions: 1. If the answer to each question is incorrect, active participation will earn a reward of 2 wealth points； 2. A correct answer rewards 6 wealth points ； 3. Rewards for answers are available once per person only ； 4. Each reply allows for only one management rating ； 5. The answer and its explanation will be visible after responding ； 6. The reward is valid for 48 hours. Again, an award for learning! Come by here every day. It’s a double-cylinder, four-stroke reciprocating pump; if the assembler fails to install one of the pump valves, then, ignoring the volume of the piston rod, the theoretical flow rate of the pump will be ( ) (single choice) A. Unchanged B. Reduced by 1/2 C. Reduced by 1/4 D. Reduced by 1/8 E. Zero. Answer: C. The pump has two cylinders, with each cylinder having two strokes, and each cylinder also has two valves – so in total there are four valves and four strokes. If one valve is missing, it means one stroke is lost, hence the flow rate is reduced by 1/4