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IP Plumbing Review > Review #1 A + B > Flashcards

Review #1 A + B Flashcards

1
Q

Stainless steel is an alloy of steel, chrome and

A

Nickel

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2
Q

Bronze is an alloy of copper and

A

Tin

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3
Q

Brass is an alloy of copper and

A

Zinc

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4
Q

Fixtures are required to have

A

Smooth, corrosion-resistant surfaces

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5
Q

Choose the best answer that defines “vitrified”
A. Hard
B. Smooth
C. Glasslike
D. Rough

A

C. Glasslike

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6
Q

Which chemical will affect “Pyrex” pipe?

A

Hydroflouric acid

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7
Q

Pipe dope is applied to pipe threads to primarily

A

Lubricate and cool the threads when tightening

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8
Q

The name given to a pipe coupling that has bolts running in parallel to the pipe to hold it together

A

Dresser coupling

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9
Q

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

A

Cracked fitting

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10
Q

The inside walls of pipe should be free if burrs and other obstructions in order to

A

Decrease the resistance to the flow of fluids

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11
Q

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

A

29.46 psia

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12
Q

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

A

Spud wrench

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13
Q

The size of a pipe wrench recommended for use on pipes 1/2” and 3/4” is

A

12”

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14
Q

The schedule number on a pipe indicates

A

The wall thickness

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15
Q

Of the black iron pipes listed below, the one with the thinnest wall section would be designated:
A. XH
B. Schedule 80
C. XXS
D. Std

A

D. Std

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16
Q

When the diameter of a pipe is doubled, it’s capacity to convey liquids increases:

A

4 times

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17
Q

Which of the following is a non-ferrous metal?
A. Stainless steel
B. Duriron
C. Wrought iron
D. Tin

A

D. Tin

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18
Q

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

A

Lacquer

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19
Q

The letter “W.O.G” stamped on a valve body would mean

A

Water, oil, gas

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20
Q

If the specification reads “(4) - 1/4” x 2” brass nipples” the length of the nipple is

A

2”

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21
Q

Which one of the following is not a method of steel pipe manufacture?
A. Butt weld
B. Electro-resistance weld
C. Seamless
D. Victaulic

A

D. Victaulic

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22
Q

The number of threads per inch for 1/8”, 1/2”, 1 1/2”, and 4” pipe would be

A

27 TPI, 14 TPI, 11 1/2 TPI, 8 TPI

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23
Q

Which of the following best describes the property that allows a metal to be drawn into a wire?
A. Tenacity
B. Ductility
C. Malleability
D. Conductivity

A

B. Ductility

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24
Q

Which of the following best describes or indicates the property that resists or keeps the particles of a body from being torn apart?
A. Tenacity
B. Ductility
C. Malleability
D. Conductivity

A

A. Tenacity

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25
Q

Which if the following best describes the ability of a body to transfer heat or electricity from one particle to another?
A. Tenacity
B. Ductility
C. Malleability
D. Conductivity

A

D. Conductivity

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26
Q

Which if the following best describes the property that allows a metal to be rolled into sheets of various shapes without breaking or tearing?
A. Tenacity
B. Ductility
C. Malleability
D. Conductivity

A

C. Malleability

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27
Q

Mercury weighs

A

13.6 times as much as water

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28
Q

Atmospheric pressure ___ at higher altitudes

A

Decreases

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29
Q

A magnesium rod installed to be sacrificed to the effects of electrolysis is

A

An anode

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30
Q

Which if the following metals is lowest on the EMF series?
A. Copper
B. Magnesium
C. Gold
D. Tin

A

B. Magnesium

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31
Q

Which of the following is not an alloy?
A. Solder
B. Bronze
C. Copper
D. Brass

A

C. Copper

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32
Q

To produce smooth, accurate threads and to cool and lubricate the dies, thread cutting oil is applied:

A

During threading

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33
Q

Besides being a safety device, the foot switch used on a power drive is a remote

A

On-off switch

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34
Q

The first thing to do when servicing a power vise is to

A

Unplug the power cord

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35
Q

Shaft bearings on a power vise should be lubricated

A

With grease

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36
Q

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

A

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

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37
Q

The pipe is secured in the power vise by the use of

A

The hand wheel

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38
Q

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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39
Q

With a power vise, the only safe hand reamer to use is a:

A

Fluted reamer

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40
Q

The power threader die head type that does not require reversing is called

A

Quick opening

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41
Q

A roll groover for pipe ____ remove the burr

A

Will not

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42
Q

This tool would best be used to centre a vertical pipe rising out of the ground under a sleeve in the first floor slab:

A

Plumb bob

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43
Q

A universal drive shaft:
A. Is used for threading any and all pipes
B. Normally drives a geared threader
C. Turns the pipe in a stationary threader
D. Connects a power vise to a roll groover

A

B. Normally drives a geared threader

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44
Q

Grooves for joints in steel pipe can be made by:

A

Rolling and cutting

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45
Q

Ductility of metal describes its:

A

Ability to be shaped or drawn out

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46
Q

Standard steel pipe is classified according to size by using the nominal diameter for all sizes from

A

1/8” up to and including 12”

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47
Q

A standard pipe thread is cut at an angle of

A

60 degrees

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48
Q

The thread cut on a pipe is known as

A

Male taper thread

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49
Q

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

A

8

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50
Q

The threads cut by the “lead” are the ____ ones

A

Imperfect

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51
Q

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

A

14 inch

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52
Q

A spiral reamer should not be used with a

A

Power vise

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53
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

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54
Q

The number of degrees of direction change of a 1/16 bend is

A

22 1/2

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55
Q

What would you use to support a 4” galvanized steel water pipe extending through more than 2 storeys?

A

Riser clamp

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56
Q

What would you use to support a 6” horizontal branch installed above ground?

A

Clevis hangers

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57
Q

To prevent a strap wrench from slipping, you would apply to the strap

A

Powdered resin

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58
Q

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

A

1-5 psi

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59
Q

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

A

Increasing the pipe size

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60
Q

Which of the following valves would create the most friction losses when fully open?
A. Ball valve
B. Globe valve
C. Gate valve
D. Butterfly valve

A

B. Globe valve

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61
Q

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

A

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

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62
Q

Why is it necessary to ream a pipe before cutting the thread?

A

If reaming follows threading, the pipe end may split or flare

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63
Q

The pivot point of a lever is known as a

A

Fulcrum

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64
Q

Fluxes used for brazing have a temperature range of

A

1100 - 1500 ‘F

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65
Q

An object which floats displaces

A

More than it’s own weight of water

66
Q

23” of Hg would be equal to how many inches of water column?

A

23 x 13.6 = 312.8”

67
Q

A good flame for oxy-acetylene welding of steel would be

A

Slightly carbonizing

68
Q

Galvanized pipe is steel pipe with a coating of

A

Zinc

69
Q

95/5 solder would likely contain:

A

95% tin, 5% antimony

70
Q

The pressure at the base of a column of water 45 feet high would be:

A

45 x .433 = 19.49 psi

71
Q

The formula for calculating specific weight is

A

Specific Weight = Weight Density of Substance / Weight Density of Water

72
Q

A cubic foot of water weighs

A

62.4 lbs

73
Q

Victaulic couplings are sealed by

A

Line pressure

74
Q

The upper portion of a ladder should extend past the point of contact with the roof by

A

3 ft (1 m)

75
Q

Which of the following knots is used to tie together two ropes of unequal diameter?

A

Sheet bend

76
Q

Compared to a grade of 1/8” per foot, 1% grade is slightly ____

A

Shallower
1/8” divided by 12 = 0.010417
1/100 = 0.01

77
Q

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

A

10 ft (3 m)

78
Q

When required, guardrails shall be placed at

A

42” above the platform

79
Q

A ditch that is 4’ 6” deep
A. Requires no shoring
B. Requires shoring
C. Requires sloping of the sides
D. Requires shoring or sloping

A

D. Requires shoring or sloping

80
Q

Cast iron water main pipe such as ductile iron is often lined with cement to

A

Prevent corrosion

81
Q

The density of a substance is defined as

A

It’s mass per unit volume

82
Q

A cross fitting is allowed in a plumbing system to connect

A

Only vent piping

83
Q

When using a wrench to tighten chrome-plated piping, what type of wrench would be best suited for this purpose?

A

Friction or strap wrench

84
Q

The standard height of the flood level rim of a regular water closet is

A

16”

85
Q

The thread used on standard pipe fittings is called

A

NPT

86
Q

After tightening a fitting by hand, it is turned by a wrench

A

Approximately 2 1/2 to 3 turns

87
Q

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

A

“Kant-leak” wax seal

88
Q

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

A

Identified

89
Q

WHMIS legislation covers the responsibility of the employer to provide

A

Worker education on controlled products

90
Q

An average thread is cut approximately

A

12 threads long

91
Q

What is the number of threads per inch for a 1 1/4” pipe?

A

11.5

92
Q

The upper end of every soil-or-waste stack shall terminate in

A

A stack vent

93
Q

Practically all pipe threads are ____ hand

A

Right hand

94
Q

What is the purpose of the small chain attached to the control valve for a flush tank of a urinal?

A

To stop noise and splashing

95
Q

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

A

3”

96
Q

The minimum length of lead stub between the underside of the closet flange and the copper ferrule is

A

3”

97
Q

Submersible well pumps often have high shutoff heads. To avoid damage to the system components and piping, what can be installed?

A

A pressure relief valve

98
Q

If you had to install a lavatory basin or similar fixture with no waste and overflow, how would you guard against possible overfilling of the fixture?

A

Install a self-closing faucet

99
Q

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

A

Negative pressure

100
Q

On the installation of a shampoo basin, what protective device is installed to prevent backsiphonage?

A

A vacuum breaker

101
Q

To ensure that bacteria is eliminated in a commercial dishwasher, the final rinse temperature should be no less than

A

180 ‘F (82 ‘C)

102
Q

The water supply to a potato peeler is always installed by the use of

A

An air gap

103
Q

The minimum size air gap allowable is

A

1” or 2 times the diameter of the supply pipe

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

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

A

4-wire zone valve

106
Q

What would be used to assure trap seal protection?

A

Trap primer

107
Q

If the hydraulic load in an S-trap standard was 3 FU, what would the trap size be?

A

3”

108
Q

What approximate acetylene and oxygen pressures would you likely use for cutting or 1/4” mild steel?

A

7 acetylene, 37 oxygen

109
Q

What would be expected at the base of a riser?

A

A shut-off valve

110
Q

What is the maximum distance between cleanouts in a 4” sanitary building drain?

A

30 m (100 ft)

111
Q

A shallow well pump is installed directly above a well. What determines the depth to which water can be accessed?

A

Atmospheric pressure

112
Q

The effectivenesss of an air chamber depends primarily upon

A

Volume of air in the chamber

113
Q

A residential wall-hung toilet would most likely be which bowl type?

A

Siphon jet or reverse trap with jet

114
Q

The relief valve piping from a hot water tank shouldn’t be piped directly into a floor drain because

A

Contamination of the potable water system may occur

115
Q

A.S.M.E stands for

A

American Society of Mechanical Engineers

116
Q

Under similar temperature conditions, the expansion rate of copper pipe is ___ than steel pipe

A

More than steel pipe

117
Q

A Durham fitting is used in

A

Drainage piping

118
Q

A clinic sink is a hospital fixture that is used for

A

Rinsing bed pans out

119
Q

Diatomaceous earth is

A

Used as a pool filter

120
Q

According to most fixture rough-in books, a standard wall-hung basin waste pipe rough-in would be closest to

A

18” AFF

121
Q

The minimum number and size of planks for a working platform is

A

2 planks, 2” x 10”

122
Q

Chlorination will remove

A

Harmful bacteria from water

123
Q

Brine is used in which cycle of a water softener?

A

Regeneration

124
Q

The brine from a water softener will usually ________ the septic process

A

Not affect

125
Q

Too much manganese in water could cause _____ stains on fixtures

A

Black

126
Q

The process used to speed up the sedimentation of fine suspended matter in water is called

A

Flocculation

127
Q

A catspaw is used in rigging to

A

Stop a load from see-sawing on a hook

128
Q

The term zeolite refers to

A

Softening agent in a water softener

129
Q

A “bowline on the bight” is tied

A

In the middle of the rope

130
Q

A wall through urinal is

A

Prohibited from installation

131
Q

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

A

Siphonage

132
Q

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

A

Less than 45 degree angle with the horizontal

133
Q

A piston pump is a

A

Positive displacement pump

134
Q

A “Douglas Flush Valve” is a name used to describe

A

An overflow and flapper assembly of a tank type water closet

135
Q

____ is not considered to be an adequate protection of potable water systems against backsiphonage backflow

A

Vacuum relief valve

136
Q

A reverse-acting aquastat used in a hydronic heating system would be used to:

A

Activate the circulator

137
Q

The suggested flood level rim height for a wall-hung basin is

A

31 inches

138
Q

A “flush elbow” is

A

The pipe that connects a wall-hung tank to the toilet bowl

139
Q

The direct flush valve of a water closet should be adjusted to

A

Adequately flush the bowl using the least amount of water

140
Q

Marble chips would be used in conjunction with a

A

Acid interceptor

141
Q

An oil and gasoline interceptor must have vents connected

A

At the top at both ends of the sump

142
Q

The vents for a gasoline and oil interceptor shall terminate directly in open air and

A

At levels differing by 12” (300 mm)

143
Q

A pan for a hot water tank must have sides that are at least ____ high

A

1”

144
Q

A small hole is located near the top of the dip tube of a hot water tank to prevent:

A

Siphonage if water from the tank

145
Q

The dip tube in a hot water tank is located

A

On the cold inlet

146
Q

The minimum air gap shall be

A

1”

147
Q

Too much iron in water could cause ____ stains on fixtures

A

Red

148
Q

A backflow preventer installed on the outlet of a fixture control valve would likely be a

A

Atmospheric vacuum breaker (janitor sink)

149
Q

Of the methods used to prevent cross connection contamination, the highest protection provided is usually by the installation of

A

An air gap

150
Q

A pressure vacuum breaker will stop backflow caused by

A

Backsiphonage only

151
Q

A vacuum relief valve is used to

A

Relieve a negative pressure in a HWT

152
Q

A hot water tank must have a shutoff valve located

A

On the cold water inlet

153
Q

Indirect (momentum) siphonage of a trap is due to

A

The operation of other fixtures in the system

154
Q

A piping material not approved for an interior leader (RWL) is
A. Asbestos cement
B. ABS
C. Sheet metal
D. Copper

A

C. Sheet metal

155
Q

A hot water tank, under pressure of 75 psig, has a faulty thermostat and continues to heat. If the T&P relief valve was also stuck in the closed position, the result would be:

A

The pressure would increase while the temperature rises to more than 212 ‘F

156
Q

The minimum degree of hardness in water that warrants the installation of softening equipment is:

A

10.5 to 25 gpg

157
Q

A heating boiler is being used to heat the house and domestic water as well. The hot water pipe from the coil in the burner would have a

A

Zone valve installed

158
Q

What is an activated carbon filter used for?

A

Taste and odour removal

159
Q

The operation of diaphragm and piston type flush valves is governed by

A

Total force

160
Q

If a reservoir is located 240 feet above the mains in a town, how much pressure would exist in the mains?

A

104 psi

240 x .433 = 103.92

161
Q

A customer complains of noise and vibration whenever the hot water faucet is turned on. The probable cause is:

A

The faucet washer is loose

162
Q

The maximum allowable cumulative change of direction for a fixture other than one that operates by siphonic action shall not be greater that _____ degrees

A

135 degrees

IP Plumbing Review (7 decks)

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