Centrifugal pump - Study guides, Class notes & Summaries

Seeding of BOD samples is necessary when samples - Correct Answer (All of the above) have a chlorine residual, have a previously been chlorinated, have been subjected to high temperatures, contain high or low pH industrial wastes When is blue-green algae the most dominant on a pond treatment system? - Correct Answer Summer A 30-inch diameter wastewater interceptor is observed to be flowing half-full at about two fps. The approximate volume of wastewater flowing through the pipe is 3.14x1.2...

MECHANICAL EXAM PUMPS AND COMPRESSOR QUESTIONS & ANSWERS 1. Name parts of the centrifugal pump? Rotary parts; Shaft, Impeller, Coupling, Mechanical seal, Oil rings Stationary parts; Casing, Stuffing box, Bearing housing

DHL Interview ATPL Questions with 100% Correct Answers What is the VOR change over distance? - answer60NM What is the minimum distance between parallel runways? - answer915m what the key points of using Mode 2 for parallel runways? - answerOnly straight in approaches allowed interception angle of no more that 30 degrees must be straight and level 1NM for localiser must be straight and level 2NM for Glideslope Minimum separation of 3NM on same Loc Min separation of 2 NM on adjacent Loc ...

A fixed volume of liquid is discharged by a centrifugal pump (TRUE/FALSE) False Which centrifugal pump component prevents reverse flowof liquid through the pump? Check valve What is used to move fluid from one location to another? Pump What centrifugal pump component rotates and causes centrifugal force to act on the fluid ? Impeller What centrifugal pump component prevents over heating of the pump? Recirculation line What condition occurs if there are bubbles forming in the pump casing? ...

A fixed volume of liquid is discharged by a centrifugal pump (TRUE/FALSE) False Which centrifugal pump component prevents reverse flowof liquid through the pump? Check valve What is used to move fluid from one location to another? Pump What centrifugal pump component rotates and causes centrifugal force to act on the fluid ? Impeller What centrifugal pump component prevents over heating of the pump? Recirculation line What condition occurs if there are bubbles forming in the pump casing? ...

ER-ExamsAppDownload:-clickhere Hydraulic Machines Interview Questions and Answers : 1. Reciprocating pumps are no more to be seen in industrial applications (in comparison to centrifugal pumps) because of (a) high initial and maintenance cost (b) lower discharge (c) lower speed of operation (d) necessity of air vessel (e) all of the above. Ans: a 2. In a centrifugal pump casing, the flow of water leaving the impeller, is (a) rectilinear flow (b) radial flow (c) free vort...

A fixed volume of liquid is discharged by a centrifugal pump (TRUE/FALSE) - ANSWER-False Which centrifugal pump component prevents reverse flowof liquid through the pump? - ANSWER-Check valve What is used to move fluid from one location to another? - ANSWER-Pump What centrifugal pump component rotates and causes centrifugal force to act on the fluid ? - ANSWER-Impeller What centrifugal pump component prevents over heating of the pump? - ANSWER-Recirculation line

Becc Test 5 Questions and Answers Already Passed A fixed volume of liquid is discharged by a centrifugal pump (TRUE/FALSE) False Which centrifugal pump component prevents reverse flowof liquid through the pump? Check valve What is used to move fluid from one location to another? Pump What centrifugal pump component rotates and causes centrifugal force to act on the fluid ? Impeller What centrifugal pump component prevents over heating of the pump? Recirculation line What c...

EPA 608 Type 3 Questions and Answers Already Passed On low pressure chillers, moisture typically enters the refrigerant system through air leaks from areas with gaskets or fittings The maximum test pressure for leak testing a low pressure centrifugal is: 10 psig Leak test and repair the chiller to reduce refrigerant loss from a pruge unit on CFC-11 chiller ... A hydrostatic tube test kit is used to: determine if a tube leaks Commercial and industrial process refrigeration systems must be rep...

What are grab samples and when is it used? - ️️A single sample taken at one place and time. Used when water quality and quantity are not variable What is used to measure flow in an open channel? - ️️Weirs or flumes. Flow is determined by the height of water at a particular point Why are particles that cause turbidity harmful? - ️️They can hide or entrap harmful organisms so that the disinfectant is unable to reach them. It calls increases CL demand which can be carcinogenic Wh...