TPC 305 PUMPS 2023/24 UPDATE

The archmedian screw is pumps material by? A bolt threaded screw in an enclosed cylinder or open trough If material being pumped needs to remain at a certain temperature ________ pipes are used Insulated Centrifugal pumps are good for pumping waste because of Low head pumping requirements and the ability to pass small particles Which is the most well suited pump for pumping high viscosity material? Positive displacement pumps Greases, heavy mastics, cement, and similar materials are most often pumped by Piston pumps (solids pumping system) In a suction lift pump installation... The eye of the impeller is above the fluid In pumping systems, the sum of the total static head, head loss, and velocity head is called? Total dynamic head (TDH) The horsepower input to a centrifugal pump is referred to as? Brake horsepower Before you can look at specific efficiency curves of a centrifugal pump, you must first know the ________ and the _________ The speed of the shaft; the diameter of the pumps impeller The ________ curve will tell you at what total head the best energy transfer in a centrifugal pump will take place Efficiency Multistage pumps build up ______ of the fluid with each stage until the desired head is reached Velocity The open impeller is used primarily for pumping fluids containing __________ Large solids Wearing rings prevent damage to the _______ and _______ Impeller and casing Shaft sleeves are designed to protect the shaft from wear by? The packing or seals In a lineshaft turbine... The bowl surrounds the impeller Axial flow propeller Pump bowls have diffuser vanes to? Straighten the flow of fluid into the discharge pipe The major difference in axial flow propeller pump and the mix flow propeller pump is the? Impeller What causes electrochemical corrosion? The combination of incompatible materials within a pump Regenerative turbine pumps can be used only to pump? Fluids with relatively low viscosities I'm an external gear pump, the fluid flows Through both gears teeth and the pump housing In an internal gear pump, the fluid flows Through both gears and the crescent area of the housing Gear pumps are normally lubricated by The material being pumped In a vane pump housing, the impeller is ________ then the housing and is __________ above the pump centerline Smaller; offset _______ pumps are similar to external gear pumps both in construction and operation Lobe pumps Most power pumps are driven by a rotating crankshaft connected to? And electric motor A power pump driven by air or steam driven piston is called Direct acting pump A single acting pump discharged fluid only on the ______ stroke of the plunger Forward