Question 414General Subjects - Assistant Engineer
70% to passThe simplest method to use for determining if a centrifugal pump is operating as designed is to _______________.
Ause a clamp on ammeter and compare the readings to past records
Bclose off the discharge valve, and watch for a rise in pressure
Cclosely observe the pump discharge temperature
Dmomentarily close off the suction valve, and watch for a rise in pressure
AI Explanation
The correct answer is B) close off the discharge valve, and watch for a rise in pressure. The reasoning is that a centrifugal pump's performance can be easily evaluated by monitoring the pressure rise across the pump when the discharge valve is closed. This causes the pump to develop its maximum pressure, which can be compared to the pump's design specifications to determine if it is operating as intended. The other options, such as using an ammeter or observing the discharge temperature, do not directly assess the pump's pressure performance, which is the simplest and most reliable way to evaluate a centrifugal pump's operation.
Related Questions
Q223:What effect does preheating, concurrent heating, or post heating have on welding... Q540:What type of liquid level indicator which senses head or pressure requires a sup... Q128:What procedure can be used to reduce the rate of scale formation on the heating ... Q86:With respect to shaft bearing load absorption capability in terms of direction, ... Q628:In accordance with the international MARPOL Annex VI regulations, what is a perm...
Ready to test your knowledge?
Take a General Subjects - Assistant Engineer Practice ExamOfficial Resources