Question 415General Subjects - Assistant Engineer70% to pass
Excessive air leakage into the suction side of a centrifugal pump would be indicated by which of the following operational problems?
AI Explanation
The correct answer is C) The pump delivers full capacity when started, but gradually slackens off to an abnormally low flow.
Excessive air leakage into the suction side of a centrifugal pump would cause the pump to lose its prime, resulting in a gradual reduction in flow over time. This is because the entrained air reduces the pump's ability to create suction and draw liquid into the impeller, causing the pump's performance to deteriorate. The other answer choices do not directly relate to the effects of excessive air leakage, as they describe issues such as motor overload, packing gland overheating, and suction pounding, which have different underlying causes.
Related Questions
#413 Reduced capacity, accompanied by vibration and noise at the suction of a centrifugal pump, results from cavitation in the fluid being pumped. Cavitation describes the formation of _______________.#414 The simplest method to use for determining if a centrifugal pump is operating as designed is to _______________.#416 A centrifugal pump may fail to deliver water when first started if the _______________.#417 Charring or glazing of the inner circumference of the packing rings in a centrifugal pump is caused by _______________.#418 If a centrifugal pump were continually operated with the discharge valve closed the _______________.