To operate a centrifugal fire pump at reduced capacity, you should ().
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相似题目
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Before attempting to put out a class “C” fire involving an electric-driven centrifugal pump, you should FIRST ().
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The purpose of the wearing rings used in a centrifugal pump is to ().
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It is possible to mount a double suction centrifugal pump impeller with the vanes facing in the wrong directionThis would cause the pump ().
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To absorb the wear resulting from impeller rotation and abrasives in the liquid, a centrifugal pump is usually fitted with ().
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The function of a centrifugal pump double volute casing is to ().
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To maintain design discharge pressure from a centrifugal pump, the design clearance must be maintained between the ().
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On board supply vessels, a centrifuge is normally used to purify()
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When installed for bilge pumping or ballast duty, centrifugal pumps require a () to remove air from the suction pipe.
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The simplest method to use for determining if a centrifugal pump is operating as designed, is to ().
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Excessive air leakage into the suction side of a centrifugal pump would be indicated by which of the following operational problems?()
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Which of the following statements is correct with regards to the operation of a centrifugal cargo pump?()
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A spring-loaded centrifugal flyweight governor responds to reduced engine load with an immediate increase in ()
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If fuel oil were being discharged from the waster outlet of a fuel oil disk type centrifuge, operated as separator, you should()
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Increasing the speed of a centrifugal pump will result in an increase in its capacity in its capacityAnother means of increasing the capacity pump is to increase the()
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Modern centrifuge designs enable continuous over a considerable period of timeThis is achieved by which is timed to discharge the sludge at regular intervals()
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The cleaned heated oil, after passing through the centrifuges, is to be pumped to a ().
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For many years marine centrifuges were designed for () operation, that is the machines were run for a period during which solids accumulated in the bowlThe machine was stopped when the accumulated solids began to impair its performance.
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A refrigeration unit will tend to short cycle when operating ().
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Which of the following problems will occur if a disk-type centrifugal lube oil purifier is not properly primed prior to admitting oil flow to the bowl?()
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If you were operating a centrifugal water service pump with worn wearing rings, the ().
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To operate a lathe, you should NOT wear ( ).
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Regulations concerning the operational control of a flight refer to
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Modern centrifuge designs enable continuous over a considerable period of timeThis is achieved by which is timed to discharge the sludge at regular intervals.
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Dynamic pumps are classified as centrifugal or axial. axial pumps operate on the principle of centrifugal force.()
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