block E pvc review

Question 1

Measurements for floor heights and drop ceilings for rough-in purposes are taken from the buildings:

Select one:

a.
site plan

b.
floor plan

c.
specifications

d.
cross sectional elevation drawing

Answer 1

D

Question 2

A fixture for the purpose of overflow protection that does not receive the regular discharge from other fixtures, appliances, or devices is known as:

Select one:

a.
a hub drain

b.
a sump drain

c.
a floor drain

d.
an emergency floor drain

Answer 2

D

Question 3

A pipe that connects the waste opening of a fixture to its trap is a:

Select one:

a.
trap arm

b.
fixture drain

c.
fixture outlet pipe

d.
direct connection

Answer 3

C

Question 4

The maximum allowable length of a fixture outlet pipe is:

Select one:

a.
1200 mm

b.
600 mm

c.
900 mm

d.
750 mm

Answer 4

A

Question 5

Drainage lines from refrigerators and other food containers should be:

Select one:

a.
connected to a grease interceptor

b.
trapped and directly connected to the sanitary drainage system

c.
discharged through a trapped air break

d.
connected directly to the sanitary drainage system

Answer 5

C

Question 6

Which of the following must be indirectly connected?

Select one:

a.
A drinking fountain

b.
A dental cuspidor

c.
A sterilizer

d.
A bidet

Answer 6

C

Question 7

Which of the following shall drain to a sanitary drainage system?

Select one:

a.
A water-treatment device draining clear-water waste

b.
A floor drain only receiving clear-water waste

c.
A drinking fountain

d.
A sterilizer

Answer 7

D

Question 8

Which of the following may be drained to a storm drainage system?

Select one:

a.
A transformer vault floor drain

b.
A sterilizer

c.
A drinking fountain

d.
A display case in a deli

Answer 8

C

Question 9

What would the minimum number of roof drains be for a roof that is 90 m long and 45 m wide?

Select one:

a.
5

b.
7

c.
6

d.
4

Answer 9

C

Question 10

What is the maximum developed length of a fixture outlet pipe serving an island sink?

Select one:

a.
1200 mm

b.
1500 mm

c.
600 mm

d.
900 mm

Answer 10

A

Question 11

Where would you connect the discharge line from a dishwasher to a kitchen sink?

Select one:

a.
To the disposal unit

b.
Through a Y-fitting on the trap arm of the sink

c.
Through a sanitary tee on the inlet of the sink trap

d.
To the concealed overflow

Answer 11

A

Question 12

What are the requirements for a sump installed in a building?

Select one:

a.
Watertight and air tight

b.
Air tight and vented

c.
Watertight and vented

d.
Watertight, air tight and vented

Answer 12

D

Question 13

What would be the size of a fixture outlet pipe that serves all three compartments of a kitchen sink?

Select one:

a.
1 1/4 inch

b.
2 inch

c.
3 inch

d.
1 1/2 inch

Answer 13

B

Question 14

What is the minimum permitted size for a floor drain in a single family dwelling?

Select one:

a.
2 inch

b.
3 inch

c.
4 inch

d.
1 1/2 inch

Answer 14

A

Question 15

What considerations must be made if one trap is to serve a group of shower drains ?

Select one:

a.
All are correct

b.
It must have a clean-out

c.
All showers must be in the same room

d.
They cannot be located where they can receive organic matter

Answer 15

A

Question 16

If a roof is 45 m wide and 60 m long, how many roof drains would it require?

Select one:

a.
8

b.
6

c.
2

d.
4

Answer 16

D

Question 17

A “T&P” relief valve must be located:

Select one:

a.
within the top 150 mm of the water heater

b.
within 150 mm of the pump intake

c.
within the bottom 150 mm of the water heater

d.
within 150 mm of the pump discharge

Answer 17

A

Question 18

What is the minimum size connector serving a supply pipe to a lavatory is?

Select one:

a.
3/8 inch I.D.

b.
1/2 inch I.D.

c.
1/4 inch I.D.

d.
5/8 inch I.D.

Answer 18

C
2.6.3.4 (3)

Question 19

What is placed in the cold water inlet to the top of the hot water tank to prevent cold water from being drawn from a hot water faucet?

Select one:

a.
Dip tube

b.
Vacuum relief valve

c.
“T&P” relief valve

d.
Check valve

Answer 19

A

Question 20

The shield on a drinking fountain must be set at a minimum angle of:

Select one:

a.
60 degrees

b.
45 degrees

c.
90 degrees

d.
30 degrees

Answer 20

B

Question 21

A pressure relief valve installed on a hot water tank is· designed to open when it reaches:

Select one:

a.
200 PSI

b.
100 PSI

c.
150 PSI

d.
the rated working pressure of the tank

Answer 21

D

Question 22

The maximum length of a connector supplying a lavatory is:

Select one:

a.
900 mm

b.
1000 mm

c.
500 mm

d.
750 mm

Answer 22

D

Question 23

The flood level rim height of a standard water closet is:

Select one:

a.
12 inches

b.
17 inches

c.
18 inches

d.
15 inches

Answer 23

D

Question 24

Basins in public washrooms are protected against overfilling by being ·equipped with:

Select one:

a.
self-closing faucets

b.
pressure regulators

c.
float valves

d.
automatic siphons

Answer 24

A

Question 25

What protective device is used on a shampoo basin to prevent backsiphonage?

Select one:

a.
Vacuum breaker

b.
Check valve

c.
RPBA

d.
Air gap

Answer 25

A

Question 26

To assure that bacteria is effectively eliminated in a commercial dishwasher, the final rinse temperature should be at least:

Select one:

a.
180°F

b.
140 °F

c.
120 °F

d.
160 °F

Answer 26

A

Question 27

A residential wall-hung toilet would most likely be which one of the following bowl types ?

Select one:

a.
Siphon-jet or reverse trap with jet

b.
Blowout

c.
Washdown

d.
Washout

Answer 27

A

Question 28

Brine is used in which of the cycles of a water softener?

Select one:

a.
Rinse cycle

b.
Regeneration cycle

c.
Flushing cycle

d.
BackWash cycle

Answer 28

B

Question 29

Too much manganese in water causes:

Select one:

a.
yellow stains on fixtures

b.
black stains on fixtures

c.
blue stains on laundry

d.
green stains on fixtures

Answer 29

B

Question 30

The word “zeolite” refers to:

Select one:

a.
the silica sand in the water softener

b.
the softening agent in the water softener

c.
the brine in the water softener

d.
the salt in the water softener

Answer 30

B

Question 31

Too much iron in water causes:

Select one:

a.
red stains on fixtures

b.
yellow stains on fixtures

c.
green stains on fixtures

d.
blue stains on laundry

Answer 31

A

Question 32

The flood level rim for a wall-hung basin is closest to:

Select one:

a.
29 inches A. F. F.

b.
42 inches A.F.F.

c.
31 inches A.F.F.

d.
36 inches A.F.F.

Answer 32

C

Question 33

A “flush elbow” is:

Select one:

a.
used to connect a wall-hung water closet tank to the bowl

b.
used on a water supply pipe installed flush with the wall

c.
an elbow used with a flushometer valve

d.
a short turn 90° elbow connected to a floor flange

Answer 33

A

Question 34

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

Select one:

a.
siphonage of water from the tank

b.
the tank from overheating

c.
the tank from expanding due to excessive pressure

d.
cold water from being drawn from the tank to the fixture

Answer 34

A

Question 35

An immersion element in a electric hot water tank is considered to be:

Select one:

a.
90 percent efficient

b.
70 percent efficient

c.
80 percent efficient

d.
100 percent efficient

Answer 35

D

Question 36

A tankless water heater :

Select one:

a.
stores hot water for future use

b.
is 100 percent efficient

c.
are only used for single fixtures

d.
fires its burner when flow is established

Answer 36

D

Question 37

A baffle is placed in the flue passage of a gas-fired hot water tank:

Select one:

a.
to speed the exit of hot combustion gases

b.
to prevent freeze-up

c.
to slow the exit of hot combustion gases

d.
to help keep the flue free of soot

Answer 37

C

Question 38

In a water closet tank, the “upper lift wire”:

Select one:

a.
is connected to the tank ball (flapper)

b.
is part of the float control valve

c.
connects the float control valve to the float

d.
is attached to the overflow tube

Answer 38

A

Question 39

A urinal flush tank uses the following method to effect a flush:

Select one:

a.
a metering valve

b.
capillary attraction

c.
a timer

d.
siphonic action

Answer 39

D

Question 40

A rough-in book is used to:

Select one:

a.
find the measurements for bathrooms as required by the building code

b.
size wastes from fixtures

c.
size building drains

d.
find the rough-in dimensions of the fixture to be installed

Answer 40

D

Question 41

Self-closing faucets are used essentially to:

Select one:

a.
prevent scalding

b.
prevent waste of water

c.
allow limited volumes of water into bathtubs

d.
prevent overflowing of fixtures

Answer 41

B

Question 42

From the following list, choose the flush valve water closet bowl that’s found most commonly in “wall outlet” types:

Select one:

a.
wash down

b.
reverse trap

c.
siphon jet

d.
blowout

Answer 42

D

Question 43

Barrier-free water closets require a minimum finished sidewall clearance of:

Select one:

a.
12 inches (300 mm)

b.
18 inches (450 mm)

c.
15 inches (375 mm)

d.
24 inches (600 mm)

Answer 43

B

Question 44

A flow restrictor is installed on the inlet of a grease interceptor to:

Select one:

a.
hold grease in the inlet piping

b.
compensate for undersized interceptors

c.
make the interceptor more efficient

d.
act as a filter

Answer 44

C

Question 45

The overflow rim height of a “barrier-free” toilet bowl is closest to:

Select one:

a.
16 inch (400 mm)

b.
12 inch (300 mm)

c.
14 inch (350 mm)

d.
21 inch (525 mm)

Answer 45

A

Question 46

The purpose of the threaded nipple on a chair carrier for a commercial wall-hung water closet is:

Select one:

a.
to allow for different wall thickness and finishes

b.
to support the bowl

c.
to adjust the height of the bowl

d.
to seal the bowl to the wall

Answer 46

A

Question 47

The correct name given to the drain arrangement installed on an enamelled steel bathtub is:

Select one:

a.
pop-up waste

b.
mechanical pop~up

c.
waste and overflow

d.
plug and chain

Answer 47

C

Question 48

Wall carriers for water closet bowls do not have adjustments for:

Select one:

a.
wall depth

b.
horizontal centre line of bowl

c.
height of discharge piping

d.
bowl height

Answer 48

B

Question 49

Where would you find the space requirement for a water closet tank?

Select one:

a.
Manufacturer’s Rough-In Book

b.
National Plumbing Code

c.
B.C. Building Code

d.
Standards Council of Canada

Answer 49

A

Question 50

What determines the height of a drinking fountain?

Select one:

a.
ULC

b.
CSA

c.
The average height of the people using it

d.
National Plumbing Code

Answer 50

C

Question 51

What is the purpose of the shield on the bubbler on a drinking fountain?

Select one:

a.
To regulate the volume of flow

b.
To provide the proper spray pattern

c.
To prevent contamination of the nozzle

d.
To direct water flow

Answer 51

C

Question 52

All piping downstream of a reverse osmosis unit must be made of:

Select one:

a.
steel

b.
plastic

c.
lead

d.
copper

Answer 52

B

Question 53

How may the drain line from a reverse osmosis unit connect to a plumbing drainage system?

Select one:

a.
Indirectly connected to either a storm or sanitary system

b.
Can not be connected to a plumbing system

c.
Directly connected to a sanitary system

d.
Directly connected to a storm system

Answer 53

A

Question 54

To increase the pH level of the raw water supply with a pH between 6.0 and 6.9, the proper filter to use is a/an:

Select one:

a.
manganese green sand filter

b.
sulphur filter

c.
neutralizing filter

d.
carbon filter

Answer 54

C

Question 55

Which compounds make water hard?

Select one:

a.
Calcium and magnesium

b.
Sulphur and calcium

c.
Iron and manganese

d.
Chlorine and phosphate

Answer 55

A

Question 56

Which impurity can be a source of disease and make water unfit for human consumption?

Select one:

a.
Iron

b.
Hardness

c.
Bacteria

d.
Sodium salt

Answer 56

C

Question 57

What effect from impurities in the water will discolor water, stain plumbing fixtures, and cause deposits in water heaters?

Select one:

a.
Hardness

b.
Bacteria

c.
Iron

d.
Sodium salt

Answer 57

A

Question 58

When heat is added to hard water, the hardness mineral deposits form:

Select one:

a.
acid

b.
iron

c.
scale

d.
sulphur

Answer 58

C

Question 59

What chemical is used to regenerate a manganese green sand filter?

Select one:

a.
Zeolite

b.
Potassium Permanganate

c.
Carbon

d.
Sodium Chloride

Answer 59

B

Question 60

Where can the purified water from a reverse osmosis unit connect to the public water supply system?

Select one:

a.
Downstream of the PRV

b.
Downstream of an air gap

c.
The water from this unit can not be connected to the public water supply system

d.
Downstream of the water meter

Answer 60

c

Question 61

Which of the following systems should be connected upstream of a water softener?

Select one:

a.
Laundry services

b.
Drinking fountain

c.
Irrigation

d.
Hot distribution

Answer 61

C

Question 62

If water is being pumped from a well to supply a drinking water system and contained all of the following water treatment devices, which device would be connected the furthest downstream?

Select one:

a.
Sand filter

b.
Chlorinator

c.
Activated carbon filter

d.
Softener

Answer 62

D

Question 63

A pH test of water determines the:

Select one:

a.
iron content

b.
degree of hardness

c.
acidity

d.
oxygen content

Answer 63

c

Question 64

If a water test indicated a pH level of 8, it would be considered:

Select one:

a.
slightly alkaline

b.
highly alkaline

c.
highly acidic

d.
slightly acidic

Answer 64

A

Question 65

On a potable water system what does the pH scale indicate?

Select one:

a.
Positive or negative ions

b.
Hard or soft water

c.
Acidity and alkalinity

d.
Chemicals and bacteria

Answer 65

C

Question 66

What must be done to the piping downstream of a reverse osmosis unit prior to being put into service?

Select one:

a.
Disinfected with a 2% chlorine solution then flushed with potable water

b.
Heated to 180°F then flushed with bleach

c.
Heated then cooled quickly

d.
Disinfected and flushed with potable water

Answer 66

D

Question 67

R.O. units work best if the water is:

Select one:

a.
hot

b.
cold

c.
warm

d.
hard

Answer 67

C

Question 68

What type of materials are typically used for plumbing fixtures in detention facilities?

Select one:

a.
Stainless steel

b.
High density polyethylene

c.
Porcelain-enamelled

d.
Vitrified china

Answer 68

A

Question 69

What is the minimum allowable distance between two shower heads?

Select one:

a.
1000 mm

b.
500 mm

c.
300 mm

d.
750 mm

Answer 69

D

Question 70

What are the primary substances contained in hard water?

Select one:

a.
Calcium, Bicarbonates and Magnesium Sulfates

b.
Copper, Zinc and Cadmium

c.
Potassium Permanganate, Calcium and Lead

d.
Manganese, Sulfates and Iron

Answer 70

A

Question 71

What considerations must be considered for the installation height of a urinal?

Select one:

a.
The height of the water supply

b.
The type of floor and wall coverings

c.
The average height of the people using it

d.
Distances from openable windows and doors

Answer 71

C

Question 72

What kind of trap would you find on a close-coupled water closet?

Select one:

a.
Integral

b.
Bell

c.
Indirect

d.
S-trap

Answer 72

A

Question 73

Why should extra caution be taken with water from a reverse osmosis unit?

Select one:

a.
The water is very acidic

b.
The water does not contain chlorine

c.
The water contains high levels of fluoride

d.
The water is very soft

Answer 73

B

Question 74

In the direction of flow, what would be the installation sequence for a water. softener, sand filter and a carbon filter?

Select one:

a.
Sand filter, water softener, carbon filter

b.
Carbon filter, sand filter, water softener

c.
Sand filter, carbon filter, water softener

d.
Water softener, sand filter, carbon filter

Answer 74

C

Question 75

What is the installation height for a wall hung urinal intended for adult use?

Select one:

a.
600 mm

b.
900 mm

c.
1200 mm

d.
300 mm

Answer 75

A

Question 76

Besides hardness, what else does a water softener remove?

Select one:

a.
Bacteria

b.
Iron

c.
Sulphur

d.
Acidity

Answer 76

B

Question 77

Why is ultraviolet light used in some water treatment systems?

Select one:

a.
Water softening

b.
Neutralizing acids

c.
Lower chlorine content

d.
Kill bacteria

Answer 77

D

Question 78

What testing equipment or devices could be used to· determine pH levels?

Select one:

a.
Digital Test Analyzer

b.
All options are correct

c.
Clear tube and Bromthymol Blue

d.
Litmus Paper

Answer 78

B

Question 79

How far from the back wall should a flush valve operated water closet be roughed in?

Select one:

a.
400 mm

b.
350 mm

c.
250 mm

d.
300 mm

Answer 79

C

Question 80

How does an ion exchange water softener work?

Select one:

a.
The calcium and magnesium ions are too large to pass through the rubber membrane

b.
The zeolite ions are trapped in a bed of sand and releases salt ions

c.
Because of the electrical charges in the manganese greensand the hardness ions are attracted to it

d.
The zeolite absorbs the calcium and magnesium ions and releases sodium

Answer 80

D

Question 81

What is the purpose of a charcoal filter?

Select one:

a.
To soften water

b.
To remove solids

c.
To remove taste and odour problems

d.
Neutralize acids

Answer 81

C

Question 82

What fixture could be used to maintain a .trap seal for a floor drain in a basement?

Select one:

a.
Drinking fountain

b.
Bidet

c.
Laundry tray

d.
Shower

Answer 82

A

Question 83

How do you allow for the grade on a branch when installing four wall hung water closets?

Select one:

a.
Install the carriers at different heights

b.
Adjust the height of each face plate

c.
Adjust the length of the carrier nipple

d.
Install the water closets at different heights

Answer 83

B

Question 84

The side clearance for a toilet when next to a wall or a bathtub is 15”, what’s the side clearance next to another toilet or urinal?

Select one:

a.
30 inches

b.
42 inches

c.
24 inches

d.
36 inches

Answer 84

A

Question 85

A fixture unit is a standard rate of waste discharge established so that load values for plumbing drainage can be expressed as a standard rate of?

Select one:

a.
1 ft3/sec

b.
1 GPH

c.
1 ft3/min

d.
1 GPM

Answer 85

C

Question 86

Which of the following does not use the principle of siphonic action to flush contents out of a water closet?

Select one:

a.
Siphon Vortex

b.
Blowout

c.
Reverse Trap

d.
Siphon Jet

Answer 86

B

Question 87

One of the most common types of water closets installed in residential application are close-coupled. Which of the following would be considered a close-coupled water closet?

Select one:

a.
The water closet is wall mounted directly to the flange.

b.
The tank and bowl are enclosed as one piece.

c.
The flush tank is fastened directly over the bowl.

d.
The water closet is floor mounted directly to the flange.

Answer 87

C

Question 88

In a washroom that is classified as barrier free, grab bars are required on one sometimes two sides of the water closet. Each bar should be approximately how long?

Select one:

a.
36 inches

b.
30 inches

c.
24 inches

d.
42 inches

Answer 88

D

Question 89

How do you shut off the control stop on a direct flush valve for a urinal?

Select one:

a.
Flat head screw driver

b.
Pipe wrench

c.
Phillips screw driver

d.
Cresent Wrench

Answer 89

A

Question 90

Which of the following best determines the length of time for a piston or diaphragm flush valve to cycle ?

Select one:

a.
Size of the bypass orifice

b.
Size of the piston

c.
Size of the diaphragm

d.
Pressure in the upstream piping

Answer 90

A

Question 91

A magnesium rod , installed in a tank and intended to be sacrificed to electrolysis, is a/an :

Select one:

a.
Current Path

b.
Anode

c.
Cathode

d.
Electrolyte

Answer 91

b

Question 92

How is the volume of flow to a urinal flush tank controlled ?

Select one:

a.
Needle Valve

b.
Ball Valve

c.
Flush Valve

d.
Metering Valve

Answer 92

D

Question 93

What type of of bottle should be used when collecting a water sample within a highrise building ?

Select one:

a.
Plastic

b.
Glass

c.
Stainless steel

d.
Sterilized and sealed

Answer 93

D

Question 94

What is the problem if the water tastes salty from a softening water system ?

Select one:

a.
The water softener requires regeneration

b.
The regeneration cycle was too short

c.
The backwash cycle was too short

d.
The rinse cycle was too short

Answer 94

D

Question 95

What procedure must be done if the water after a water softener becomes hard water ?

Select one:

a.
It must be regenerated

b.
It needs to be rinsed

c.
The zeolite must be replaced

d.
It must be backwashed

Answer 95

A

Question 96

Which type of water treatment device would be used if a water system was found to contain coliform organisms ?

Select one:

a.
Reverse Osmosis filter

b.
Water softener

c.
Manganese Green-sand Filter

d.
Chlorinator

Answer 96

D

Question 97

If a compression style stop is found to be leaking and after changing the washer is still leaking , what may be the cause ?

Select one:

a.
Worn or damaged seat

b.
Spline is damaged

c.
Faulty packing nut

d.
Faulty stem assembly

Answer 97

A

Question 98

To shorten the time between flushes of a flush tank type urinal , the plumber would :

Select one:

a.
Turn the adjusting screw of the control stop clockwise

b.
Increase supply pressure

c.
Turn the adjusting screw of the control stop counter-clockwise

d.
Decrease supply pressure

Answer 98

C

Question 99

The direct flush valve on a water closet should be adjusted to :
Select one:

a.
Flush for a minimum of 30 second

b.
Flush for a specified time according to the national plumbing code.

c.
Flush or a minimum of 60 second

d.
Adequately flush the bowl with the least amount of water

Answer 99

D

Question 100

Which of the following is the correct way to shorten the flush of a flushometer valve ?

Select one:

a.
Turn the needle valve adjusting screw on the body of the flush valve counter-clockwise.

b.
Partially close the control stop

c.
Turn the needle valve adjusting screw on the body of the flush valve clockwise.

d.
Fully open the control stop

Answer 100

A

Question 101

The tube through which water flows to refill the flush tank of a water closet discharges near the bottom of the tank primarily to prevent :

Select one:

a.
Sediment from settling on the bottom of the tank

b.
Disturbance of the trap seal

c.
Splashing over the rim of the tank

d.
Noise

Answer 101

D

Question 102

If water runs continuously into the overflow tube in a water closet tank , the fault is in the :

Select one:

a.
Flapper

b.
Trip-lever linkage

c.
Float control valve

d.
Lift wire or guide

Answer 102

C

Question 103

A customer complains of noise and vibration whenever the hot water faucet is turned on. What is the most likely cause ?

Select one:

a.
There is air trapped in the piping

b.
The water is too hot

c.
The water pressure is too high

d.
The compression washer is loose

Answer 103

D

Question 104

If the bypass opening on a direct flush valve were completely blocked, the toilet would :

Select one:

a.
Flush continuously

b.
Not flush at all

c.
Only flush once

d.
Flush sporadically

Answer 104

A

Question 105

The main reason for placing insulation in a water closet tank is :

Select one:

a.
To provide protection for the water closet tank during installation

b.
So the water closet will use less water per flush cycle

c.
To deaden the noise produced by tank operation

d.
To stop condensation from forming on the outside of the water closet tank

Answer 105

D

Question 106

What adjustment would be required for an electronic flush valve if it is being activated by people 6 feet away from it ?

Select one:

a.
Turn the flush valve 90 degree

b.
Replace the flush valve

c.
Shorten the length of the sensor beam

d.
Change the angle of the sensor beam

Answer 106

C

Question 107

How is the flush affected if the orifice bypass screw is partially blocked on a flush valve ?

Select one:

a.
Shorter flush

b.
Continuous flush

c.
Would not flush

d.
Longer flush

Answer 107

D

Question 108

How would the flush be affected if the diaphragm in a flush valve was ruptured ?

Select one:

a.
Continuous flush

b.
Longer flush

c.
Shorter flush

d.
Would not flush

Answer 108

A

Question 109

If a flush tank urinal continues to flush, what is faulty?

Select one:

a.
The siphon

b.
The float control valve

c.
The control stop

d.
The hush tube

Answer 109

A

Question 110

Which device is installed within a hot water tank to prevent corrosion?

Select one:

a.
Vacuum relief

b.
Dip tube

c.
Cathode

d.
Anode

Answer 110

D

Question 111

If both elements are working in a hot water tank but you are receiving insufficient hot water from the tank, what could be the problem?

Select one:

a.
Oversized piping

b.
Broken dip tube

c.
Leaking T&P relief valve

d.
Oversized tank

Answer 111

B

Question 112

What would cause the temperature and pressure relief valve on a natural gas-fired hot water tank to start dripping whenever the burner is operating?

Select one:

a.
A leaking vacuum relief

b.
Waterlogged expansion tank

c.
Faulty T&P relief valve

d.
A broken dip tube

Answer 112

B

Question 113

How would you clean the nozzle (orifice) in a water softener?

Select one:

a.
Soak in an acid solution

b.
Blow it out with air

c.
Soak in brine

d.
Push a wire through it

Answer 113

D