【Daily Question】Wastewater Knowledge-103 (July 21) (2 points for answering, 4 points for a correct answer)
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This post was last edited by Gorō Bagua Stick on 2015-7-29 at 13:28. Multiple-choice question: Which of the following statements regarding the reasons for excessive power consumption by water pumps and the methods to correct it are correct? A. The packing is too tight; adjust the packing compression screw. B. The pump shaft is bent, causing the impeller to rub against the pump casing during rotation ； Disassemble the pump body, correct or adjust the pump shaft. C. Severe wear of the bearings increases the rotational torque ； The outlet pipe of bearing D is blocked ； Remove debris from the outlet pipe. E. The bottom valve at the outlet is too heavy, resulting in an increased head loss for water inflow ； Take balancing measures on the gate to reduce the head loss required to open it. Answer: A.B.C.D.E
This post was last edited by Gorou’s Eight Trigrams Staff on 2015-7-21 at 14:32. A. The packing is too tight; adjust the packing compression screw. B. The pump shaft is bent, causing the impeller to rub against the pump casing during rotation ； Disassemble the pump body, correct or adjust the pump shaft. C. Severe wear of the bearings increases the rotational torque ； The outlet pipe of bearing D is blocked ； Remove debris from the outlet pipeline. E. The bottom valve at the inlet is too heavy, resulting in an increased head loss for water intake ； Take balancing measures on the discharge valve to reduce the head required to open it
A. The packing is too tight; adjust the packing compression screw. B. The pump shaft is bent, causing the impeller to rub against the pump casing during rotation ； Disassemble the pump body, correct or adjust the pump shaft. C. Severe wear of the bearings increases the rotational torque ； Inspect and adjust bearings
A, B, C are correct. ----------
The correct options regarding the reasons for excessive power consumption by water pumps and the methods to correct it are (ACD).
Correct answers: A, B, C, D, E.
BCDEBCDEBCDEBCDEBCDEBCDEBCDEBCDEBCDE
The correct statements regarding the reasons for excessive power consumption by water pumps and the methods to correct it are (ABCDE).