24 Questions
What is the main function of an air chamber in a pump installation?
To smoothen the flow of the liquid
Where should a pressure relief valve be installed in a pump installation?
On the discharge side of the piping installation
What is the shape of the pressure-volume diagram of the steam end in a direct acting steam pump?
Rectangle
What is the purpose of a foot valve and strainer in a pump installation?
To minimize head loss at the suction pipe
What is the characteristic of the discharge flow diagram in a direct acting steam pump?
It is a rectangle
What is the type of engine that drives a crank and flywheel driven pump?
Compound steam engine
What is the purpose of a crank and connecting rod in a power driven pump?
To convert rotary motion into linear motion
What is the term used to describe a large reciprocating pump driven by a steam engine?
Pumping engine
Which type of pump is ideal for low head large-capacity applications?
Mixed-flow centrifugals pumps
What is the primary mechanism of head development in axial-flow pumps?
Lifting action of vanes
What is the typical capacity range of power pumps driven by a crankshaft or other device?
Very low to medium flows
Which type of pump is characterized by a series of vanes, blades, or buckets turned by a single rotor?
Vane pumps
What is the primary advantage of direct-acting pumps?
Steady discharge flow
Which type of pump is well-suited for handling non-abrasive viscous liquids?
Cam and piston rotaries
What is the maximum pressure range of power pumps driven by a crankshaft or other device?
Up to 15,000 psi
Which type of pump is a form of reciprocating power pump?
Crank-and-flywheel pump
What is the primary function of an automatic unloader in reciprocating pumps?
To bypass the discharge with the suction well when operating against a closed discharge
What type of pump is best suited for handling liquids of high viscosities, such as heavy fuel oil?
Rotary pump
In a cam and piston pump, what is the function of the abutment or follower?
To displace a positive quantity of liquid from the space between the cam and follow and the pump casing
What is the main difference between external gear pumps and internal gear pumps?
The location of the gear rotors and idler
What is the primary advantage of plunger-type reciprocating pumps over piston-type pumps?
They are more suitable for high-pressure heavy duty or continuous service and can handle gritty and foreign material
What is the purpose of the valves in a reciprocating pump?
To allow the forward and backward movement of the piston or plunger inside the cylinder
What is the characteristic of rotary pumps that makes them capable of handling only clean solutions?
They are essentially free of solids
In a gear pump, what is the purpose of the tooth space?
To carry the liquid around to the opposite side and displace it as the teeth mesh again
Types of pumps including direct acting steam pumps and those with screw rotors. Learn about the working principles and characteristics of each type.
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