Question 296General Subjects - QMED70% to pass
A centrifugal pump may fail to deliver water when first started if the _______________.
AI Explanation
The correct answer is B) the pump is not primed.
A centrifugal pump requires the pump casing and suction line to be filled with liquid before it can operate effectively. If the pump is not primed, it will not be able to draw in and deliver water when first started. Priming the pump ensures that the pump casing and suction line are completely filled with water, allowing the pump to create the necessary suction to draw in and discharge water.
The other options are incorrect because they do not directly relate to the pump's ability to deliver water when first started. The seal ring, water seal pipe, and impeller flooding are not the primary reasons a centrifugal pump would fail to deliver water upon initial startup.
Related Questions
#294 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 _______________.#295 Pitting in the suction areas of a centrifugal pump bronze impeller is usually caused by _______________.#297 Charring or glazing of the inner circumference of the packing rings in a centrifugal pump is caused by _______________.#298 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 _______________.#299 Which of the following valve arrangements permits the reciprocating pump liquid piston to take suction from the suction chamber, and simultaneously discharge through the discharge chamber during the up and down strokes?