tools, safety, dwv

Question 1

a water jet machine can provide up to _____ psi of working pressure

Answer 1

3500

Question 2

a right angle drill has a _____” check size

Answer 2

1/2

Question 3

a _____ is the preferred tool to use when tightening water supply connections to the faucet behind fixtures

Answer 3

basin wrench

Question 4

the maximum tube size for which electric soldering torches can be used is

Answer 4

3”

Question 5

a ____ wrench would be preferred when assembling a 1/2” to 3 “ pipe inside a small wall cavity

Answer 5

offset pipe wrench

Question 6

a ____ is used to measure the amount of current in an electrical circuit

Answer 6

ammeter

Question 7

the lower section of an extension ladder is called a ______

Answer 7

bed section

Question 8

when flaring copper tube with an impact flaring tool, the collar must be ____ the tube end in order to make a proper flare

Answer 8

flush to

Question 9

_____is packed into the cast iron hub before the lead is applied

Answer 9

oakum

Question 10

when pouring a cast iron joint, the layer of lead should be _____

Answer 10

1” thick

Question 11

a _____ wrench should be used to assemble, without marring, pipe with finished chrome plating.

Answer 11

strap

Question 12

a ____ is a tool used to cut external threads on pipe

Answer 12

die

Question 13

a ____ is a tool that is used to make victaulic joints

Answer 13

pipe groover

Question 14

soldering is performed with temperatures less than _____ degrees

Answer 14

840

Question 15

tubing benders are used on _____ copper tubing

Answer 15

annealed

Question 16

expanding tools and crimping tools are used on

Answer 16

pex

Question 17

a _____ drill is used to drill holes in concrete

Answer 17

hammer

Question 18

a ____ is used on concrete

Answer 18

masonry bit

Question 19

before an operator can behind to use a powder actuated tool, the operator must____

Answer 19

have passed the exam on the safe operation of the tool

Question 20

______ is the most dengerous common gas becaquse it gives no warning to its victims and is slightly lighter than air

Answer 20

carbon monoxide

Question 21

a ____ is a test instrument used to measure the pressure of gases and vapors in a closed system

Answer 21

manometer

Question 22

the main advantage can of using a clamp on ammeter is _____

Answer 22

measurements can be taken without opening the circuit

Question 23

plumbers use liquid _____ to freeze pipes

Answer 23

nitrogen

Question 24

right angle drills can cut holes up to _____”

Answer 24

4-5/8”

Question 25

a _____ is a circular saw that is attached to a small table and pivots at its rear

Answer 25

chop saw

Question 26

an injured individual experiences shock when_____

Answer 26

injury is severe and the body vital functions are threatened by a lack of blood or when the major organs and tissues do not receive enough oxygen

Question 27

self contained breathing apparetus must be inspected ____

Answer 27

monthly

Question 28

_____ is not recommended for safely operating power equipment

Answer 28

ensuring the power switch is in the ON position before connecting equipment to a source

Question 29

a class A fire extinguisher is identified by ____

Answer 29

the color green inside the triangle symbol

Question 30

the angle of repose varies on a job site when

Answer 30

types of soil change

Question 31

granular soil is ___

Answer 31

soil consisting of gravel , sand , or silts with little or no clay content

Question 32

a ____ is a vertical steel H beam that is driven into the ground and designed to hold wood lagging

Answer 32

soldier pile

Question 33

confined spaces do not include ____

Answer 33

trenches less than 4' in depth

Question 34

section _____ of an SDS contains information about proper handling and storage of a material

Answer 34

7

Question 35

____ is not advised if a fuel gas cylinder is found leaking around the valve stem

Answer 35

keeping the cylinder in the working area

Question 36

what is required on a confined space entry permit

Answer 36

names of employees, air sampling instruments, life saving equipment,

Question 37

an extension cord with a capacity of ___ Amps is suitable for most power tools

Answer 37

15

Question 38

the most common type of electrical shock hazard is a ____

Answer 38

ground fault

Question 39

a sanitary waste system should not be used for waste ____

Answer 39

from storm water drains

Question 40

respiratory protection is required to protect against ____

Answer 40

airborne chemical hazards

Question 41

a class ____ fire extinguisher should be used on an electrical fire

Answer 41

c

Question 42

graywater system is an onsite water treatment and recycling system that uses wastewater generated from?

Answer 42

washing machines, showers, bathtubs, and sinks

Question 43

graywater can be used in _____

Answer 43

water closets, urinals, trap seal primers, and directly connected underground irrigation systems

Question 44

on a sewage pump, the float level for the high water alarm should be set ___ above the highest level for pump activation depending on the depth of the sump pump

Answer 44

6 - 12"

Question 45

a pipe repair clamp can be used to repair a pipe that ____

Answer 45

has a pinhole

Question 46

a transition coupling is used for ____

Answer 46

forming a leak proof joint between two sections of drain piping

Question 47

a ____ valve is used to prevent the backflow of sewage into a building

Answer 47

backwater

Question 48

a ____ cutter head is recommended when sand is present in the lines

Answer 48

space

Question 49

when no cleanout is present and rodding from a waste arm underneath a sink is the best access a ____ drain cutting head is best suited for this application

Answer 49

drop head auger

Question 50

care must be used when water jetting a ____ pipe

Answer 50

poly vinyl chloride

Question 51

an _____ valve does not require any power and is less prone to being blocked by debris than any other backwater valve

Answer 51

automatic knife valve (backwater)

Question 52

a ____ cannot be used to supply a gray water system

Answer 52

water closet

Question 53

_____ is the process of attaching two ends of plastic pipe together using heat and pressure

Answer 53

butt fusion

Question 54

a _____ is a water tight pit or receptacle into which liquid or liquid carried waste is drained

Answer 54

sump

Question 55

the method of drain cleaning that uses high pressure water directed through hardened steel or a brass nozzle to open and clean drain lines is called ____

Answer 55

water jetting

Question 56

_____ is a condition that occurs when a pump attempts to compress air trapped in the discharge pipe and does not move any water

Answer 56

air lock

Question 57

a _____ pump is used to pump graywater or other non organic liquids from sinks and washing machines into building drains

Answer 57

laundry

Question 58

a ____ is an extension from the building storm drain to a public storm sewer or other point of disposal such as a retention or detention pond

Answer 58

building storm sewer

Question 59

the ____ system is the portion of a plumbing installation designed to maintain atmospheric pressure within the installation

Answer 59

venting

Question 60

a ____ is a pipe fitting with a removable plate or plug that provides access to the plumbing or other drainage pipes for inspection and removal of materials

Answer 60

cleanout

Question 61

what types of testes and be used to determine leaks in the venting system

Answer 61

water air smoke

Question 62

______ are air pressure activated, one way mechanical vents that are used to replace conventional pipe venting

Answer 62

air admittance valves (AAV)

Question 63

a ____ valve is a plumbing valve that permits fluid flow in only one direction and closes automatically to prevent backflow

Answer 63

check valve

Question 64

sump pump and sewage ejectors should be thoroughly inspected

Answer 64

annually

Question 65

a _____ is a device that rests on the surface of a liquid and actuates a valve or switch in a plumbing system

Answer 65

float switch