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17 Cards in this Set
- Front
- Back
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Double-acting piston pumps discharge an equal amount of liquid on all strokes |
False |
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Which one of the following reciprocating pumps can be allowed to run dry |
Diaphragm pump |
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Rotary pumps produce a smoother flow than reciprocating pumps |
True |
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Which one of the following vane pumps uses an oval rotor |
External vane pump |
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Variable discharge rotary pumps may be |
Vanes and pistons |
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A balanced vane pump uses |
An elliptical Housing |
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A single cylinder, double acting plunger pump is also known as a duplex pump |
False, a duplex pump has two cylinders and two plungers |
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Plunger pumps can have fixed or adjustable strokes |
True |
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Hydraulically activated diaphragm pumps |
Can handle high pressures Have high pressure stiffness Have high-metering precision |
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Which of the following methods of drive or activation is most likely to be used on a double acting diaphragm pump |
Pneumatically activated |
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A multiplex plunger pump has every plunger delivering liquid simultaneously |
False, a duplex pump has two cylinders and two plungers |
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The pump least likely to be used for handling food products would be |
An external vane pump |
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An example of a peristaltic pump would be |
A flexible tube pump |
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A flexible vane pump does not need a relief valve |
True |
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Which type of rotary pump best tolerates abrasives |
Single rotor screw pump |
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The rotors of multi rotor screw pumps all have threads of the same hand |
False; they need to mesh and create flow as the rotors turn |
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Which one of the following rotary pumps requires timing gears |
External circumferential piston pump |
