Pumps

There are two main categories of pumps. Which answer is correct?

• Positive displacement pumps and reciprocating

• Positive displacement pumps and piston

• Positive displacement pumps and Kinetic

• Centrifugal and Kinetic

A Diaphragm pump is a...

• Positive displacement pump

• Kinetic pump

• Pump that can only be used for medical purposes

• Pump that cannot be used for hazardous liquids

Identify this type of pump.

• Diaphragm pump

• Lobe pump

• Vane pump

• Progressive cavity pump

Identify this type of pump.

• Diaphragm pump

• Lobe pump

• Vane pump

• Progressive cavity pump

Identify this type of pump.

• Diaphragm pump

• Lobe pump

• Vane pump

• Progressive cavity pump

Vane pumps are ideally suited for:

• High-viscosity, lubricating liquids

• Low-viscosity, non-lubricating liquids

• High-pressure applications

• Solid materials

In a Vane Pump, when performing measurement checks, which of the following are to be performed? (MULTIPLE CORRECT ANSWERS)

• Vane length

• Vane height

• Pump bore ovality

• Vane thickness

• Shaft length

What is the purpose of the wearing ring?

• To prevent wear on the pump rotor shaft

• To seat the impeller to the pump casing

• To prevent frictional contact between the Impeller and Pump Casing

• To increases pump efficiency

What is Cavitation?

• An effect caused by the rapid change in fluid temperature

• An effect caused by the rapid change in fluid motion

• An effect caused by air bubbles collapsing in the fluid

• A process used to clean a running pump

What effect would a worn wear ring have on a pump?

• The pump will cavitate

• The pump will lose its ability to pump to its maximum and therefore it will loose efficiency

• The pump impeller will become loose

• The pump bearings will crease