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Plumbing Level 1 > Foundation study guide Package one > Flashcards

Foundation study guide Package one Flashcards

1
Q

True or False: In describing a tee fitting, the size of the run is mentioned first, followed by the size of the branch.

A

True

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2
Q

True or False: Pipe dope is usually applied only to the female threads.

A

False

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3
Q

True or False: 90 degree bends do not impede the flow of fluids as much as 45 degree bends.

A

False

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4
Q

True or False: Under similar freezing conditions, type “K” soft copper tubing is less likely to burst than steel pipe.

A

True

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5
Q

True or False: 1” and 2” standard pipe threads have the same number of threads per inch

A

True

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6
Q

True or False: “Duriron” is well suited for acid drains lines

A

True

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7
Q

Besides steel and chrome, what other material or element makes up stainless steel?

A

Nickle

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8
Q

What is copper alloyed with to create bronze?

A

Tin

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9
Q

What is copper alloyed with to create brass?

A

Zinc

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10
Q

Complete the following statement: “Fixtures are required to have…”

A

Smooth, corrosion - resistant surfaces.

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11
Q

Choose the best answer that defines “vitrified”

A

Glasslike

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12
Q

Which chemical below will affect “Pyrex” pipe?

A

Hydrofluoric acid

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13
Q

What is the primary purpose for applying pipe dope to pipe thread?

A

To lubricate + cool the threads when tightening

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14
Q

What would be done to shorten the time bn flushes of a tank - type urinal?

A

Turn the stem on the control stop counter clockwise

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15
Q

What is the name given to a pip coupling that has bolts running parallel to the pipe to hold it together?

(see picture)

A

Dresser coupling

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16
Q

What is the standard height of the flood level rim of a regular water closet bowl?

A

16”

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17
Q

What is the thread used on standard pipe / fittings called?

A

NPT: National Pipe Thread

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18
Q

When a screwed cast iron fitting is excessively tightened, what will be the most likely result?

A

A cracked fitting

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19
Q

After tightening a fitting by hand, approximately how many turns are made by a wrench?

A

2 ½ - 3 turns

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20
Q

Why should the inside walls of pipe be free of burrs and other obstructions?

A

To decrease the resistance to the flow of fluids

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21
Q

If a pressure gauge reads 14.73 psig, what would the absolute pressure be?

A

29.46 psia

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22
Q

What is a wrench used to tighten a flat-faced plumbing fitting called?

A

Spud wrench

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23
Q

What size of pipe wrench is recommended for use on pipes ½” and ¾” ?

A

14”

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24
Q

What does the schedule number on a pipe indicate?

A

the wall thickness

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25
Q

Of the black iron pipes, which number indicates the thinnest wall section?

A

STD

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26
Q

When the diameter of a pipe is doubled, how much does its capacity to convey liquids increase by?

A

4 times

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27
Q

What is a non-ferrous metal?

A

Tin

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28
Q

To prevent black iron from rusting during transit, what protective coating is applied to the pipe?

A

Lacquer

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29
Q

What do the letters “W.O.G” stamped on a valve body mean?

A

Water, Oil and Gas

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30
Q

If the specification reads, “(4) - ¼” x 2” brass nipples”, What is the length of a nipple?

A

2”

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31
Q

Which of the following is not a method of steel pipe manufacture?

A

Victaulic

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32
Q

What would the number of threads / inch for 1/8, ½”, 1 ½” . and 4”

A

27 TPI, 14 TPI, 11 ½” TPW

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33
Q

What describes the property that allows a metal to be drawn out?

A

Ductility

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34
Q

What describes or indicates the property that resists or keeps the particles of a body from being torn?

A

Tenacity

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35
Q

What best describes the ability of a body to transfer heat or electricity from one particle to another?

A

Conductivity

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36
Q

What best describes the property that allows a metal to be rolled into sheets of various shapes w/o breaking or tearing?

A

Malleability

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37
Q

How much does mercury weigh in comparison to water?

A

13.6 Times as much as water

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38
Q

Finish the sentence, “Atmospheric pressure…”

(increase or decreases with higher altitude)

A

decreases at higher altitudes

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39
Q
  1. Math question
A
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40
Q

What is a magnesium rod installed to be sacrificed to the effects of electrolysis known as?

A

An anode

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41
Q

Which of the following metals is lowest on the EMF series?

Copper, Magnesium, gold, tin?

A

Magnesium

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42
Q

Which of the following is not an alloy?

Solder, bronze, copper or brass

A

copper

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43
Q

In order to produce smooth, accurate threads and to cool and lubricate the dies, when is thread cutting oil applied?

A

During threading

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44
Q

What is the purpose of the foot switch used on a power drive? (besides safety)

A

It’s an on / off switch

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45
Q

What should the first thing to do when servicing a power vise?

A

Unplug the power cord

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46
Q

How should shaft bearings on a power vice be lubricated?

A

With grease

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47
Q

If extension cords must be used with power tools, what should they have?

A

a 3-prong plug on one end and a 3-pole receptacle on the other end

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48
Q

Why should you not reach across a power vice?

A

Your foot may come off the switch

you may lose your balance

you cloths may get oil on them

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49
Q

How is pipe secured in the chuck of a power vise?

A

By using the hand wheel

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50
Q

Complete the sentence, “when hand pipe cutters are used with a power vise…”

A

The vise rotates the pipe and the support bar prevents the cutters from rotating.

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51
Q

With a power vice, what is the only safe hand reamer to use

A

A fluted reamer

52
Q

What is the power threader die head type that does not require reversing?

A

Quick - opening

53
Q

Complete the sentence, “A roll groover for pipe…”

(about burrs)

A

Will not remove the burr

54
Q

At what point does the coupling seal?

A

Where the gasket meets the pipe (closer to the end of the pipe)

55
Q

Complete the sentence, “A power vice…”

A

Holds and turns pipe

56
Q

What tool would be best to use to centre a vertical pipe rising out of the ground under a sleeve in the first floor slab?

A

A plumb-bob

57
Q

What can a Rigid Model 700 portable drive be used to do?

A

Thread pipe

58
Q

With mounted accessories, what can a Rigid Model 300 power vise serve as?

A

A power threader

59
Q

Complete the sentence, “A universal drive shaft…”

A

normally drives a geared threader

60
Q

How can grooves for joints in steel pipe be made?

A

By rolling and cutting

61
Q

Where a hazardous material is transferred by a piping system, what must the system be?

A

Identified

62
Q

In reference to WHMIS, what does provincial legislation apply to?

A

The storage, handling and use of hazardous material

63
Q

What does WHMIS legislation specify that the employer is responsible to provide?

A

Worker education on controlled products

64
Q

What does WHMIS legislation provide workers and employers with?

A

Information on all types of material

65
Q

An average thread is cut approximately how many threads long?

A

12

66
Q

What is cutting oil used for?

A

to cool the chasers

to reduce the power required

to help remove cutting chips

67
Q

What does ductility of metal describe?

A

its ability to be shaped or drawn out

68
Q

In reference to WHMIS, what is the employer responsible for checking?

A

That the controlled products being delivered are properly labeled

69
Q

What does “WHMIS” stand for?

A

Workplace Hazardous Material Information System

70
Q

Standard steel pipe is classified according to size by using the nominal diameter for what sizes of pipe?

A

1/8” up to and including 12”

71
Q

At what angle is a standard pipe thread cut?

A

60 degrees

72
Q

What is the thread cut on a pipe known as?

A

male taper thread

73
Q

What is the number of threads per inch for an 8 - inch pipe?

A

8

74
Q

What is the number of threads per inch for a 1 ¼” pipe?

A

11.5

75
Q

If a 2” NPS pipe has an ID of 2.067” and an OD of 2.375”, what is the wall thickness?

A

0.154 “

ID - OD / 2 = WT

76
Q

A 2” NPS steel pipe is exactly 2.067” ID and the wall thickness is exactly 0.154”. Wat is the exact OD?

A

2.375”

77
Q

What is the function of a “ball drip” used on a fire department connection?

A

to drain the siamese connection

78
Q

Which threads are cut by the “lead”?

A

The imperfect ones

79
Q

At what size does NPS change to OD on mild steel and wrought iron pipes?

A

14”

80
Q

What shall the upper end of every soil-or-waste stack terminate in?

A

a stack vent

81
Q

Complete the sentence, “Practically all pipe threads are…”

A

right hand

82
Q

Which one of the following should a spiral reamer NOT be used with?

A

a power vise

83
Q

Backing is not required for what type of fixtures?

A

Vanity basin

84
Q

When making an end-to-centre measurement using a threaded fitting, how many allowances must be made in order to cut and thread the pipe?

A

1 (the centre one)

85
Q

When making a centre-to-center measurement using a threaded fitting, how many allowances must be made in order to cut and thread the pipe?

A

2 (both centres)

86
Q

What are the number of degrees of direction change of a 1/16th bend?

A

22 ½ degree (16 of them make a circle, 360 degrees)

87
Q
  1. math question
A
88
Q

Which one of the following would you use to support a 4” galvanized steel water pipe extending through more than 2 storeys?

A

Riser clamps

89
Q

Which of the following would you use to support a 6” horizontal branch installed above ground?

A

Clevis hangers

90
Q

What would you apply to a strap wrench to keep it from slipping?

A

Powdered resin

91
Q

When a break occurs in a water main, what is likely to occur within the house piping?

A

negative pressure

92
Q

If cleanouts for two-way rodding are to be installed on a building drain or branch at 50ft (15m) intervals, what min size would the piping be?

A

less than 2”

93
Q

What is the min size opening for c/o that are 50ft (15m) apart and are capable of 2-way rodding?

A

Same size as the drainage pipe

94
Q

What is the min size air gap allowable?

A

1” or 2 times the diameter of the supply pipe

95
Q

What isn’t the purpose of a plumbing vent?

A

Prevent noise from entering the building via drainage system

96
Q

An existing pipe is 2 ½” ID and is to be replaced by two pipes equal in size. If the two pipes are to supply at least as much flow as the original, what is the smallest ID for these pipes?

A

2”

97
Q

Which of the following would be used to assure trap seal protection?

A

Use a trap primer

98
Q

What pressure range of acetylene would you likely be working with during oxy-acetylene welding?

A

1 - 5 psi

99
Q

What approximate acetylene and oxygen pressures would you likely use for cutting of ¼” mild steel?

A

7 acetylene, 37 oxygene

100
Q

an example of a direct cross connection would be:

A

a portable water main connection to a plumbing vent

101
Q

A wax seal with an embedded plastic ring is known in the trade as a:

A

“Kant-leak”

102
Q

The max height at which a worker can work above ground before requiring guardrails is:

A

10 ft

103
Q

A hot water tank must have a shutoff valve located:

A

on the cold water inlet

104
Q

If it was required to have a sink full of water, with hot water running continuously, what device could be used to achieve this?

A

install a standing waste

105
Q

Under similar temp conditions, the expansion rate of copper pipe is:

A

more than steel pipe

106
Q

A component of a hydronic system that employs an end switch is a:

A

4-wire zone valve

107
Q

At what size does NPS change to OD on mild steel and wrought iron pipes?

A

14”

108
Q

What is the purpose of the fire department connection on the outside of a building?

A

allow the fire department to boost the water pressure in the system

109
Q

The min number and size of planks for a working platform is:

A

2 planks, 2” x 10”

110
Q

When using wrenches to tighten a valve onto a pipe, the wrenches would be placed:

A

one on the pipe and one on the valve on the end the pipe is inserted into

111
Q

A vacuum relief valve is used to:

A

relieve a negative pressure in a HWT

112
Q

Shaft bearing on a power vise should be lubricated with:

A

with grease

113
Q

The anode rod in a HWT:

A

becomes smaller with use

114
Q

Soil pipe cutters (snap cutters) are designed to cut:

A

cast iron pipe

115
Q

In areas subject to heavy frost conditions, the min size of the vent termination serving an individually-vented bathtub shall be not less than:

A

3”

116
Q

In plumbing, the term “nominally horizontal” refers to a pipe graded to:

A

less than 45 degree angle with the horizontal

117
Q

The resistance to flow in a piping system can be decreased most satisfactorily by:

A

increasing the pipe size

118
Q

ASME stand for?

A

American Society of Mechanical Engineers

119
Q

95/5 solder contains:

A

95% tin, 5% antimony

120
Q

The density of a substance is defined as:

A

it’s mass per unit volume

121
Q

Which of the following valves would create the most friction losses when fully open?

A

globe valve

122
Q

A negative pressure in a plumbing drain, waste and vent system can cause a trap to lose its seal by:

A

siphonage

123
Q

Epoxy coating applied to ring hangers is required to prevent:

A

galvanic corrosion through dissimilar mental contact

124
Q

The pivot point of a lever in known as a(an):

A

Fulcrum

125
Q

A cross fitting is allowed in a plumbing system to connect:

A

Only vent piping

Plumbing Level 1 (14 decks)

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