L3

Question 1

Water is combi of?

Answer 1

Hydrogen and oxugen

Question 2

Liquid is how manu times heavier tha air

Answer 2

830

Question 3

gas is how many times lighter than air

Answer 3

133

Question 4

Weight of water?

Answer 4

3.778kg/ us gallon
1000kg/ M³

Question 5

Holes dug in the ground

Answer 5

Dug wells

Question 6

Constructed by driving a pipe in the ground

Answer 6

Driven wells

Question 7

Shallow wells that are constructed with an auger

Answer 7

Bored wells

Question 8

Deep wells created by air rotary drill

Answer 8

Drilled wells

Question 9

Simplest of the reciprocating pumps

Answer 9

Lift pump

Question 10

Deliver water at a point higher than the position of the pump

Answer 10

Force pump

Question 11

Include that class of pumps in which the piston moves to and from either horizon or vertical

Answer 11

Reciprocating pump

Question 12

Revolving around axis

Answer 12

Centrifugal pump

Question 13

Matic and require no motor since they depend for operation upon water hammer

Answer 13

Hydraulic ram

Question 14

A device, motor closed

Answer 14

Submersible pump

Question 15

Articles of mattrrs are suspended in water can stay below

Answer 15

Sedimentation

Question 16

Water are given…. To kill bacterias

Answer 16

Chemical treatment

Question 17

Water are.,..,. On various process so to remove particles of vegetable matter

Answer 17

Filtration

Question 18

Water is made to pass tiny sleeves

Answer 18

Aeration

Question 19

Els that hold water and air under pressure. Do not have a bladdet

Answer 19

Pressure tank

Question 20

Water storage tank that uses rubber membrane

Answer 20

Bladder tank

Question 21

Constructed of riveted and welded plate

Answer 21

Suction tank or cistern

Question 22

Small hot water tank

Answer 22

Range boiler

Question 23

Large hot water tank

Answer 23

Storage tank

Question 24

Consist of a heater with or without storage tank

Answer 24

Hot water supply

Question 25

An Upfeed supply riser with the return circulation taken off at a point just below the highest fixture connection. For building of moderate height.

Answer 25

Upfeed

Question 26

This is commonly used in sman residential and industrial installations. Objectives are: 1. to provide constant circulation of hot water. 2. to draw hot water immediately from the fixture at any time. 3. to provide circulating return for economy.

Answer 26

Upfeed and gravity return system

Question 27

For high structures, consist of a main up-feed supply to a distribution line (Overhead) at the top of the building from which Downfeed risers are taken off to feed the several stacks of fixtures.

Answer 27

Overhead