Question 177General Subjects - 1st Asst/Chief70% to pass
The simplest method to use for determining if a centrifugal pump is operating as designed is to _______________.
AI Explanation
The correct answer is C) close off the discharge valve, and watch for a rise in pressure.
This is the simplest method to determine if a centrifugal pump is operating as designed. By closing off the discharge valve, the pump will build up pressure, which can be observed. If the pressure rises as expected, it indicates the pump is functioning properly. This method directly tests the pump's ability to generate the required discharge pressure.
The other options are incorrect because they do not directly evaluate the pump's performance. Option A measures the motor current, which can be affected by factors other than pump operation. Option B measures the discharge temperature, which is an indirect indicator. Option D tests the suction side, which does not directly assess the pump's discharge performance.
Related Questions
#175 When installing a mechanical shaft seal on a pump, it is important to _______________.#176 You suspect a problem with the centrifugal fire pump on your ship, and begin to slowly close the discharge valve. Your suspicion is confirmed when the _______________.#178 After a disassembly of a single stage centrifugal pump, one finds the outer circumference of the impeller badly pitted and worn. Not having a spare impeller on board, it is decided to turn down the impeller to eliminate the wear/pitting. What will be the pump capacity, in GPM, after the reduction of impeller diameter by 0.5 inches? GIVEN: Original pump capacity = 30 GPM Original impeller diameter = 8 in. #179 If a centrifugal pump were continually operated with the discharge valve closed the _______________.#180 Which of the following statements is true concerning centrifugal pumps?