Pumps

Question 1

is an equipment used to transfer fluid from a region of low pressure to another region at same or higher pressure

Answer 1

Pump

Question 2

Pump–A device or machine that compresses and/or transports fluids usually by _________

Answer 2

pressure or suction

Question 3

Categories of Pump Classification

Answer 3

1. As to Operating Principle
2. As to Casing Design
3. As to Mounting
4. As to Connection with Driver
   (Motor or Engine)
5. As to Construction Materials

Question 4

Pumps under Centrifugal type

Answer 4

a. Radial Flow
b. Axial Flow
c. Mixed Flow

Question 5

Pumps under Positive Displacement Type

Answer 5

a. Reciprocating Piston
b. Reciprocating Plunger
c. Rotary Blades
d. Rotary Roots
e. Screw Types
f. Gear

Question 6

Pumps under Turbine Type

Answer 6

a. Axial Flow
b. Mixed Flow

Question 7

Classification of Pumps as to Casing Design:

Answer 7

1. Horizontal Split Case
2. Vertical Split Case
3. Submerged

Question 8

Classification of Pumps as to Mounting

Answer 8

1. Base Mounted
2. In –line Mounted

Question 9

Classification of Pumps as to Connection with Driver:

Answer 9

1. Flexible Coupled
2. Case Coupled
3. Belt Driven

Question 10

Classification of Pump as to Construction Materials

Answer 10

1. Cast Iron
2. Stainless Steel
3. Bronze
4. Concrete
5. Plastic
6. Fiberglass

Question 11

A vane or impeller rotate inside a close-fitting case, draw in liquid at the center and, by virtue of centrifugal force, throw liquid out through an opening in the periphery of the case

Answer 11

Centrifugal Pump

Question 12

The higher the speed of rotation, the greater the ___________ that can be pumped or the greater the ___________- that can be generated.

Answer 12

Volume; Head

Question 13

The recommended suction lift for centrifugal is___meters and should not exceed __ meters

Answer 13

4.5; 6

Question 14

is basically a centrifugal pump complete with electric motors which are positioned underwater in a suitable bored hole that delivers the water to the surface

Answer 14

Submersible Pump

Question 15

indicates the size of the pump to be installed.

Answer 15

Well Diameter

Question 16

indicates the Static Water Level, the vertical distance from the surface (Datum Line) to the water level when no wateris being pump

Answer 16

Well Depth

Question 17

the vertical distance from the Datum Line to the water level when specified capacity is being pumped.

Answer 17

Pumping water level

Question 18

the vertical distance or the difference between the Pumping Water Level and the Static Water Level.

Answer 18

Drawdown

Question 19

indicates the Total Discharge Head(Static plus Friction) between Datum line & point of measurement.

Answer 19

Head Above Datum

Question 20

volume rate of flow expressed in cubic meters perhouror liters per second to be produced by the pump.

Answer 20

Pump Capacity

Question 21

the nominal vertical distance (in meters) from Datum to the discharge pipe connection at the pump

Answer 21

Pump Setting

Question 22

make-up of the water to be pumped.

Answer 22

Water composition

Question 23

the specification of the available power source (single phase or 3 phase)

Answer 23

Type of Drive

Question 24

percentage of rated motor main plate power (in kilowatts or horsepower) that will be permitted to be used

Answer 24

Allowable Motor Overload

Question 25

A pump which operates with a to and fro motion

Answer 25

Reciprocating Pump

Question 26

The simplest of the reciprocating pump and consists of a piston moving up and down in a cylinder or barrel.

Answer 26

Lift Pump

Question 27

A plunger is driven backwards & forwards, or up & down by a mechanical working head

Answer 27

Piston or Plunger Pump

Question 28

Deep –well Piston Pump

Answer 28

When water is more than 7.50 meters below the ground, it is virtually necessary to place the pump in or near the water in the well and pump from there. Water is forced up the drop pipe and out into the delivery pipe.

Question 29

displacement pump in which a flexible diaphragm replaces the piston in other displacement pumps. The diaphragm is of leather or heavy –gauge rubber.

Answer 29

diaphragm pump

Question 30

used primarily as a source of fluid power in hydraulic system. It continuously scoops the liquid from the pump chamber

Answer 30

rotary pump

Question 31

a pump consisting revolving impeller in the pump housing which forces water down a pressure line to an ejector assembly below water level

Answer 31

Jet Pump

Question 32

uses the energy of falling water to raise a smaller quantity of water to greater heights. It is a pump in which the power generated from flowing in an enclosed pipe is used to raise part of the water to a height above that from which the flow began.

Answer 32

Hydraulic Ram

Question 33

The characteristic curve of a pump describes the factors that affect its performance. They are usually expressed graphically with the rate of discharge (Q) as abscissa& other factors plotted as ordinates, such as the Head (H), & the Net Positive Suction Head (NPSH).

Answer 33

Pump Performance Curve

Question 34

Pump Selection “Rule of Thumb”:

Answer 34

1. If the well water depth is 6 meters or less, use Centrifugal Pump. 2. If the well water depth is 6 to 20 meters, use Jet Pump. 3. If the well water depth is more than 20 meters, use Submersible Pump or Vertical Line Shaft Turbine Pumps.

Question 35

Submersible Pumps for Water Pit

Answer 35

BMS, BMSP

Question 36

Submersible Shallow Well Pump

Answer 36

IDROGO

Question 37

Surface Pumps for Fresh Water Supply, Non Self Priming (Cast Iron Models)

Answer 37

End Suction: FSA,MD,CNA/CSA,CM,CDA In-line: LPD

Question 38

Surface Pumps for Fresh Water Supply, Non Self Priming (Stainless Steel Models)

Answer 38

End Suction: CDX Series 3 & 3L Series Vertical Multistage: EVM,MULTIGO

Question 39

Self Priming(Cast Iron)

Answer 39

End Suction:FQ, AG Series

Question 40

Submersible Pumps for Underground Water, Cast Iron model

Answer 40

BHS

Question 41

Submersible Pumps for Underground Water, stainless steel model

Answer 41

4BHS,6BHS, 4BPS