4393950
Descripción
Test por TRAVIS CANNING, actualizado hace más de 1 año
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Creado por TRAVIS CANNING
hace casi 9 años
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Pregunta 1
Pregunta
As the liquid travels through the volute casing of a centrifugal pump toward the discharge, its _______ energy is converted into pressure or potential energy.
Respuesta
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rotation
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fluids
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kinetic
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electrical
Pregunta 2
Pregunta
As compared to a radical flow pump, the axial pump has a low suction lift and develops a relatively ______ discharge head, and has a ______ flow capacity
Respuesta
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low, small
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low, large
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high, small
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high, large
Pregunta 3
Pregunta
The screw pump
Respuesta
-
has two screws that rotate in the same direction inside the casing
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has an externally-cut gear which meshes with an internally-cut gear
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has a single rotor containing screw threads within a casing
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has two rotors each with three lobes.
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has two rotors each with intermeshing screw threads
Pregunta 4
Pregunta
A/An ______ valve is a combination check valve and minimum flow valve in one unit.
Respuesta
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discharge
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automatic recirculation valve
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remote backpressure valve
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minimum flow
Pregunta 5
Pregunta
Wearing rings are often made of _____ or cast iron since these materials tend to wear in a smooth manner.
Respuesta
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bronze
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copper
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nickel
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brass
Pregunta 6
Pregunta
The mixed flow pump has a single inlet impeller with the flow entering the pump in an axial direction and leaving the pump in direction between axial and _______
Respuesta
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centrifugal
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radial
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series
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parallel
Pregunta 7
Pregunta
The external gear pump
Respuesta
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has two gears, which rotate in opposite directions inside the casing.
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has an externally-cut gear that meshes with an internally-cut gear, separated by a crescent-shaped portion
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has a rotor containing vanes within slots
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has two rotors each with three lobes
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has two rotors each with two opposing spirals or screw threads
Pregunta 8
Pregunta
The axial flow pump, often called a _____ pump, uses an impeller with vanes similar to a ships propeller
Respuesta
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ships
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mates
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lift
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propeller
Pregunta 9
Pregunta
Multi-stage centrifugal pumps are equipped with two or more impellers operating in ______
Respuesta
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parallel
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series
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opposition
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separate casings
Pregunta 10
Pregunta
It is imperative that the flow through a multistage pump be kept above a _______ flow rate
Respuesta
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maximum
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manufactures
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minimum
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safe
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