Pumps

Question 1

What are the three elements of a reciprocating pump?

Answer 1

A plunger, a Piston, a diaphragm

Question 2

What do pumps create?

Answer 2

Flow

Question 3

What can cause A pump to change when operating?

Answer 3

Wear, leaks, restrictions, temp of liquid

Question 4

What are the two types of positive displacement pumps?

Answer 4

Reciprocating and rotary

Question 5

What are piston and plunger pumps used for?

Answer 5

Creating extremely high-pressure liquids for cleaning, pressurizing systems, hydraulic testing and are common in the chemical pharmaceutical and oil field sectors.

Question 6

What do rotary pumps consist of?

Answer 6

An rotor or rotors turning inside a closed casing with a minimum of clearance

Question 7

What is a foot valve?

Answer 7

A check valve installed in the bottom or foot of a suction line.

Question 8

What are the applications for pumps?

Answer 8

To feed water to boilers
To convey or meter fuel and chemicals
To circulate coolants and condensation

Question 9

What are the two basic classifications of pumps?

Answer 9

Dynamic and positive displacements

Question 10

What is pump head?

Answer 10

Pressure that has to overcome to be aide to move liquid through the system

Question 11

How is the pumps rating and size expressed?

Answer 11

Expressed as a percentage of theoretical capacity

Question 12

What is the most efficient impeller?

Answer 12

Closed.

Question 13

What impellers can’t handle solids?

Answer 13

Semi open / semi closed.

Question 14

Which impellers have weak vanes and head easily ?

Answer 14

Open impellers.

Question 15

Why do most positive displacement pumps require a relief value?

Answer 15

Protect them from damage caused by excessive pressure

Question 16

What is the difference between unbalanced and balance vanepumps?

Answer 16

Unbalanced can be variable
Balance are fixed flow

Question 17

What is another name for metering pumps?

Answer 17

Chemical injection pumps/ chemical feed pumps s proportioning pumps, and dosing pumps.

Question 18

What are the four categories of dynamic pumps?

Answer 18

Radial-flow, axial-flow, mixed-flow, peripheral pumps.

Question 19

What is density?

Answer 19

The Mass or weight of a substance per unit of volume.

Question 20

What is specific gravity?

Answer 20

Is the ratio of the density of a substance to that of water.

Question 21

What is pressure?

Answer 21

Measure of intensity of effort described as force per unit of area

Question 22

What is atmospheric pressure?

Answer 22

Portion of the weight of the earths weight of the earths atmosphere that bears down on an area of on square inch

Question 23

What is gauge pressure?

Answer 23

The pressure of the liquid in the system read by a pressure gauge

Question 24

What component converts mechanical energy into kinetic energy?

Answer 24

Impeller

Question 25

Another name for an high-speed impeller?

Answer 25

Paddlewheel

Question 26

What do front wearing rings minimize?

Answer 26

Axial thrust

Question 27

What is the term used when you cutdown an impeller on a lathe?

Answer 27

Trimming

Question 28

What are two basic classifications of pumps’

Answer 28

Dynamic and positive displacement

Question 29

How do dynamic pumps move fluid?

Answer 29

Using centrifugal force

Question 30

What are the four categories of centrifugal pumps?

Answer 30

Flow, radial, mixed axial, peripheral pump

Question 31

What is pump head?

Answer 31

Pressure that has to overcome to be able to move liquid through through the system