Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Plumbing Year 4 > CT Red seal prep #3 > Flashcards

CT Red seal prep #3 Flashcards

1
Q

Which equipment or approach is the most successful at preventing reverse siphonage from a potable water supply?

a) Air break.
b) Air gap.
c) DCVA device.
d) RP device.

A

b) Air gap.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What makes water hard?

a) natural water with dissolved minerals
b) natural water with no dissolved minerals
c) processed water with no dissolved minerals
d) natural salt minerals

A

a) natural water with dissolved minerals

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the minimal amount of ground cover required for underground gas pipes?

a) 450mm
b) 400mm
c) 350mm
d) 425mm

A

a) 450mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

When pipes vibrate, what is the most probable cause?

a) high water pressure
b) low water pressure
c) loose fittings
d) small leak drawing air into the pipes

A

c) loose fittings

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

When installing glass pipe, if one end has be cut on the job site, the ends must be linked.

a) bead to hub
b) bead to plain
c) plain to plain
d) bead to bead

A

a) bead to hub

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Which process would repair a spiralling tube cutter along a copper pipe?

a) Rotate only in a counter clockwise motion.
b) Increase the cutter wheel tension when cutting.
c) Change the cutter wheel to a larger size.
d) Tighten rollers and cutter wheel pins.

A

d) Tighten rollers and cutter wheel pins.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Which variable, when sizing a water service and distribution system, has the largest impact on the available water pressure at a plumbing fixture?

a) The total Fixture Unit load.
b) The height of the building.
c) The size of the water service.
d) The length of the building.

A

c) The size of the water service.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What piping technique is necessary for oil interceptor venting?

a) 1 vent pipe terminated less than 300mm above the other.
b) 2 vent pipes terminated less than 2m above ground.
c) 2 vent pipes connected to the interceptor at opposite ends.
d) 2 vent pipes connected to same side of the interceptor.

A

c) 2 vent pipes connected to the interceptor at opposite ends.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

For which of the following may a fire hose penetrate an exit to give the requisite coverage?

a) security room in a gaming premise
b) roof-top enclosure more than 50 m2 in area
c) room not more than 50 m2 in area
d) group of rooms with an area of 100 m2 in an un-sprinklered floor area

A

c) room not more than 50 m2 in area

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Which of the following must be the minimum clearance beneath a barrier-free toilet?

a) 655 mm wide and 700 mm high at the front edge
b) 760 mm wide and 735 mm high at the front edge
c) 450 mm wide and 735 mm high at the front edge
d) 750 mm wide and 250 mm high

A

a) 655 mm wide and 700 mm high at the front edge

CHECK

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

As the metal cools after being sliced with a flame, it will?

a) expand
b) contract
c) become softer
d) cannot weld the material

A

b) contract

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What kind of pipework resists corrosion and high temperatures?

a) aluminum
b) stainless steel
c) cast iron
d) carbon steel

A

b) stainless steel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

When a gas line travels from one building to another, where is a gas cock need to be installed?

a) Either the exit or entrance of either building.
b) The exit and entry points of each building.
c) The point of entry to the second building.
d) A point of exit from the first building.

A

c) The point of entry to the second building.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What size drain is required for a washing machine?

a) 2 ½ in
b) 2 in
c) 3 in
d) 1 ½ in

A

b) 2 in

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

According to which of the following may the following groups of fixtures be safeguarded by a single trap?

a) 6 separate shower drains in the same room
b) 3 separate floor drains located in a food preparation room
c) 7separate sinks located in the same room
d) 2 separate laboratory sinks located in different rooms within a large
laboratory

A

a) 6 separate shower drains in the same room

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Which of the following are file roughness grades?

a) Bastard, smooth, fine
b) Fine,second cut, bastard
c) Slick, coarse, rough
d) Rough, course, bastard

A

b) Fine,second cut, bastard

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Which kind of pump must undergo hydrostatic testing?

a) Axial flow pump.
b) Positive displacement pump.
c) Radial flow pump.
d) Centrifugal flow pump.

A

b) Positive displacement pump

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What is the diameter of a toilet drain tailpiece?

a) 1 ½ in
b) 1 ¼ in
c) 2 in
d) 2 ½ in

A

a) 1 ½ in

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Which sling arrangement has the highest capacity rating for a lifting procedure?

a) Basket sling with 2 inclined vertical legs.
b) Basket sling with 2 vertical legs.
c) Single vertical leg.
d) Choker with single vertical leg.

A

a) Basket sling with 2 inclined vertical legs.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

How is the capacity of a soil to accommodate a private sewage disposal system determined?

a) Squirt test.
b) Soil classification test.
c) Soil saturation test.
d) Sand in jar test.

A

b) Soil classification test.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Gas space heaters placed in corridors of senior living facilities should?

a) may be unvented
b) should not have a projecting flue box
c) must be vented type
d) should have a projecting flue box

A

c) must be vented type

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

How many public showers could be supplied by a 34” cold water branch with a developed length of 6.5m?

a) 4
b) 3
c) 1
d) 5

A

a) 4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

How much room is necessary around the handle of a fire hose cabinet valve for it to function properly?

a) 3”
b) 1”
c) 1 ½ “
d) 2”

A

b) 1”

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Which equipment or technique is used to prevent potable water from backflow when chemicals are supplied to a hydronic heating system?

a) RP device.
b) DCVA.
c) PVB device.
d) Air gap.

A

a) RP device.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

What is the minimal amount of ground cover required for underground gas pipes?

a) 14
b) 10
c) 16
d) 20

A

a) 14 inches 15”

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

Copper pipe should not be used to empty urinals.

a) False
b) True

A

b) True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

Which of the following has the highest flame-spread rating for walls and ceilings in a sprinklered vertical service space?

a) 100
b) 50
c) 25
d) 200

A

a) 100

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

What is a fire of class “C”?

a) gasoline
b) electrical equipment, motors, switches
c) ordinary combustions like wood, paper, etc

A

b) electrical equipment, motors, switches

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

Which chemical may be used to disinfect drinkable surface water?

a) Potassium permanganate.
b) Sodium carbonate.
c) Sodium hypchlorite.
d) Potassium chloride.

A

c) Sodium hypchlorite.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

You must use a 20-foot ladder positioned against a 40-foot-tall structure. What vertical distance must the ladder be from the building’s base?

a) 6ft
b) 3ft
c) 5ft
d) 8ft

A

c) 5ft

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

A dimension of 3 inches The installation of ABS pipe between two 45° elbows. The center-to-center distance between the 45° elbows is 55 1/2 inches, and the fitting allowance for a 45° elbow is 15/16 inches. What length of ABS pipe must be cut?

a) 55 1/2”
b) 54 3/16”
c) 52 1/2”
d) 52 7/8”

A

c) 52 1/2”

o calculate the length of ABS pipe needed between two 45° elbows with a center-to-center distance of 55 1/2 inches and a fitting allowance of 15/16
inches for each elbow: 55 1/2” - (2 × 15/16”) = 55 1/2” - 1 7/8” = 53 5/8”. When reduced to the nearest inch, it is approximately 52 1/2”.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

232) What are the two plumbing systems in a home?

a) water supply and VWD
b) water supply and DWV
c) water supply and WDV

A

b) water supply and DWV

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

What routine maintenance is necessary to ensure the safe functioning of a testable backflow preventer?

a) Certified specialist tests the device annually.
b) Service man tests the device every second year.
c) Property owner tests the device every other year.
d) Journeyman plumber tests the device annually.

A

a) Certified specialist tests the device annually.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

Where is the high-pressure in-line sensor for a medical gas system located?

a) At the manifold.
b) Downstream of the pressure regulator.
c) Upstream of the main shut-off valve.
d) Upstream of the pressure regulator.

A

b) Downstream of the pressure regulator.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

Electrolysis is a destructive force that might result from the collision of these
two metals. Electrolysis is a destructive force that might result from the collision of these two metals.

a) dielectric fittings and copper piping
b) ferrous metals and non ferrous metals
c) steel and cast iron
d) copper and plastic pipe

A

b) ferrous metals and non ferrous metals

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

Which pipe configuration must be used to terminate the regeneration
discharge line of a water softener?

a) Directly to approved drainage termination.
b) Indirectly to a dual check valve on the softener head.
c) Directly to the bypass valve around softener head.
d) Indirectly to approved drainage termination.

A

d) Indirectly to approved drainage termination.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

How many 2” pipes are required to match a 6” pipe’s volume capacity?

a) 6
b) 3
c) 9
d) 10

A

c) 9

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
38
Q

What are Class “A” fire extinguishers used for and what do they contain?

a) Electrical components, foam
b) Metal, CO2
c) flammable liquids, CO2
d) Combustible materials, Water

A

d) Combustible materials, Water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
39
Q

What is the shortest possible length of a trap arm?

a) 10in
b) 2 pipe diameters
c) 14in
d) No min

A

b) 2 pipe diameters

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
40
Q

The optimal position for installing a circulator pump in a hot water heating
system is?

a) on the supply before the expansion tank
b) on the supply after the zone valve
c) on the supply after the expansion tank
d) on the return close to the boiler

A

c) on the supply after the expansion tank

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
41
Q

What method of piping can help remove air from a hydronic heating system?

a) Diaphragm tank to have automatic air vent.
b) Grade main piping up in the direction of flow.
c) System mains to use concentric fittings.
d) Install air vents at all changes of direction.

A

b) Grade main piping up in the direction of flow.

42
Q

When calculating friction loss in a bulk main, how many feet of schedule #40 pipe are comparable to two standard 6-inch 40o elbows?

a) 14
b) 8
c) 12
d) 16

A

c) 12

When calculating friction loss in a bulk main, 12 feet of schedule #40 pipe are
comparable to two standard 6-inch 40-degree elbows in terms of flow
resistance.

43
Q

Steel piping is available in a variety of lengths.

a) 3M
b) 1M
c) 6M
d) 8M

A

c) 6M

When calculating friction loss in a bulk main, 12 feet of schedule #40 pipe are
comparable to two standard 6-inch 40-degree elbows in terms of flow
resistance.

44
Q

What causes air locks?

a) damage pipe
b) an air bubble
c) grease/dirt build up
d) low water pressure

A

b) an air bubble

45
Q

Where is the outdoor sensor of the indoor/outdoor control installed for optimal performance?

a) At least 300mm away from an outside light.
b) In the attic next to the ventilation grill.
c) On a west wall with exposure to sun.
d) On a north wall just below the soffit.

A

d) On a north wall just below the soffit.

46
Q

What kind of pipe installation requires a “fire donut”?

a) Cast iron passing through fire rated wall.
b) DWV copper passing through fire rated floor.
c) Ductile iron passing through a fire rated floor.
d) ABS piping passing through fire rated ceiling.

A

a) Cast iron passing through fire rated wall.

47
Q

A heating line is erected with the following steel pipe specifications: Imperial COE: 0.0000067 Length: 200’ Installed at 55°F Operable at 180°F. What is the expansion rate of this heating line?

a) 4
b) 2
c) 3
d) 1

A

a) 4

he expansion rate of a heating line can be calculated using the formula for thermal expansion: ΔL = αLΔT, where ΔL is the change in length, α is the coefficient of expansion, L is the original length, and ΔT is the temperature change. For the given values, the expansion rate is approximately 4 inches.

48
Q

Self-sealing gaskets can be found in?

a) victaulic fitting
b) mechanical joint coupling
c) bell and spigot joint
d) full face flange

A

a) victaulic fitting

49
Q

Calculate the water pressure at a depth of 150 metres.

a) 1565kpa
b) 1470kpa
c) 1785kpa
d) 1450kpa

A

a) 1565kpa

The water pressure at a depth of 150 meters can be calculated using the formula Pressure = depth × density of water × gravity. The calculated pressure would be approximately 1565 kPa.

50
Q

What is the function of the rollers with notches on a copper tube cutter?

a) Flex slightly and prevent the crushing of the tube.
b) Make a space for cutting materials to collect.
c) To permit the cutting of tubing close to a flare.
d) Allow room for the pipe to displace when cut.

A

c) To permit the cutting of tubing close to a flare.

51
Q

Is it always required to use a file using a file handle?

a) Yes
b) Only on large files
c) Only when working in confined spaces
d) Only on smaller files

A

a) Yes

52
Q

When two washbasins are used to wet vent a shower drain, the fixture drains must connect at the same level to a vertical waste pipe from which of the following?

a) double fitting
b) double cross fitting
c) double T fitting
d) double Y fitting

A

c) double T fitting

53
Q

What colour is the K type?

a) Blue
b) Green
c) Yellow
d) Black

A

b) Green

54
Q

What is the anode rod used to prevent corrosion in a hot water heater composed of?

a) aluminum
b) boron
c) magnesium
d) molybdenum

A

c) magnesium

55
Q

What should be used to grease and seal threaded pipe fittings?

a) Plumbers putty
b) Silicone
c) Pipe dope
d) Teflon thread

A

c) Pipe dope

56
Q

50/50 solder joints are?

a) permitted on NH systems
b) permitted on systems containing less than 6lbs of Group 1 refrigerants
c) not permitted on any systems
d) are permitted on any system

A

c) not permitted on any systems

57
Q

What are the minimal dimensions for mobile home service connections?

a) 4” sewer, ¾” water
b) 4” sewer, 1” water
c) 3” sewer, ½” water
d) 3” sewer, ¾” water

A

a) 4” sewer, ¾” water

58
Q

What must be considered while deciding the place to install a condensing
boiler?

a) near a floor drain
b) central to heating units
c) homeowner’s preference
d) existing vent location

A

a) near a floor drain

59
Q

What is the name of the valve that shuts when the flow in a pipe line is reversed?

a) check
b) gate
c) butterfly
d) relief

A

a) check

60
Q

What are dielectric unions used for?

a) isolate metallic piping
b) connect plastic to copper pipe
c) prevent corrosion
d) ground metallic pipe

A

c) prevent corrosion

61
Q

Valves, piping, and fittings according to plumbing code for oxygen service?

a) should be cleaned thoroughly with a solution of gasoline and kerosene
b) do not need to be cleaned prior to installation
c) should be cleaned with a warm solution of sodium carbonate
d) should be cleaned with paint thinner

A

c) should be cleaned with a warm solution of sodium carbonate

62
Q

Where is a four-wire zone valve connected?

a) thermostat, transformer, end switches
b) transformer, hi limit, motor, circulator
c) thermostat, transformer, hi limit, motor
d) thermostat, transforme

A

a) thermostat, transformer, end switches

63
Q

What tools are used to remove soft metal that has been trapped in a file’s
teeth?

a) Another file
b) A small drill
c) A wire brush
d) A file card

A

d) A file card

64
Q

In a septic tank, what is the purpose of adding a screen around the effluent pump?

a) Prevents solids from entering the effluent chamber.
b) Prevents solids from entering the pressure distribution.
c) Prevents the pump from plugging.
d) Prevents solids from entering the gravity distribution.

A

c) Prevents the pump from plugging.

65
Q

What would occur to the private sewage disposal system if the septic tank is not regularly maintained and emptied?

a) Gases in the tank will enter the venting system.
b) Amount of effluent flushed will increase.
c) Anaerobic bacteria will cease to function.
d) Solids will carry over and damage the field.

A

d) Solids will carry over and damage the field.

66
Q

What are the benefits of utilising a single cut file as opposed to a double
cut file?

a) A single cut file will leave a smoother surface finish
b) A single cut file will remove material more quickly
c) A single cut file cuts on the reverse as well as the forward stroke
d) A single cut file is made from a harder metal

A

a) A single cut file will leave a smoother surface finish

67
Q

What would happen if a flushometer’s bypass orifice was partly clogged?

a) No flushing.
b) Long flush cycle.
c) Short flush cycle.
d) Constant flushing.

A

c) Short flush cycle.

68
Q

Two water closets are roughed in at a distance of 254 millimetres (10 inches) from the completed walls. What is the c-c spacing of the sleeves if the partition is 125 mm (5 in) hollow tile and the wall finish is 19 mm (3/4 in) plaster?

a) 652 mm /25 3/4in.
b) 698 mm /27 1/2in.
c) 335 mm /13 1/4in.
d) 671 mm /26 1/2in.

A

b) 698 mm /27 1/2in.

he center-to-center spacing of the sleeves for the roughed-in water closets would be calculated by adding the dimensions: 254 mm (10 inches) + 254 mm (10 inches) + 125 mm (5 inches) + 19 mm (3/4 inch) + 19 mm (3/4 inch) + 27 mm (space between the closets) = 698 mm (27 1/2 inches).

69
Q

The municipal system supplies a 34” make-up water pipe to a private water supply cistern. What size air gap is necessary?

a) 1 ½
b) ¼
c) 2
d) 2 ½

A

d) 2 ½

70
Q

How should a thermal bulb (aquastat proportional controller) be installed on a chilled water system?

a) Strap the bulb on the cooling supply line.
b) Install in a thermal well with conductive paste.
c) Mount the bulb on the coolest surface of the chiller.
d) Install directly into a tapped tee connection.

A

b) Install in a thermal well with conductive paste.

71
Q

Which of the following is the primary rationale for using a dielelectric fitting to link copper pipes to black steel pipes?

a) prevents friction loss.
b) allows expansion between joints
c) provides a tight joint.
d) prevents electrolysis.

A

d) prevents electrolysis.

72
Q

Which of the following metals can be readily cut with oxy-fuel?

a) cast iron
b) aluminum
c) high alloy steel
d) low carbon steel

A

d) low carbon steel

73
Q

What colour is the H type?

a) Black
b) White
c) Yellow
d) Blue

A

b) White

74
Q

Which device must be installed on the water supply line that connects to the bottom of a commercial water heater?

a) Vacuum relief valve located at least 6” above the tank.
b) Temperature and pressure relief within the top 150 mm (6 in.) of the tank.
c) Atmospheric vacuum breaker within the top 150 mm (6 in.) of the tank.
d) Check valve located 6” before tank if plastic pipe is used.

A

a) Vacuum relief valve located at least 6” above the tank.

75
Q

To prevent additional strain on? fittings, hangers are attached next to them.

a) joist
b) foundation
c) joints
d) supports

A

c) joints

76
Q

Installing a backwater valve in a building’s drain is permissible if?

a) normally open
b) properly vented
c) 3” or larger
d) trapped upstream

A

b) properly vented

77
Q

Which of the following must be used to evaluate the operation of a base-mounted hydronic pump?

a) Millivolt meter.
b) Voltmeter.
c) Ohmmeter.
d) Ammeter.

A

Ammeter

78
Q

A bathroom’s inside finish on a four-story office building must have a flamespread rating of no more than which of the following?

a) 150
b) 300
c) 50
d) 25

A

c) 50

79
Q

Copper pipe allowed for subterranean water distribution?

a) type K soft
b) type L hard
c) DWV
d) type M soft

A

a) type K soft

80
Q

Which of the following must be present at the base of every soil or garbage pile?

a) building drain
b) TY
c) floor drain
d) cleanout and expansion joint

A

d) cleanout and expansion joint

81
Q

What is necessary when building horizontal or vertical lengths of long, straight copper household hot water piping?

a) Dielectric unions.
b) Pipe insulation.
c) Isolation valves.
d) Expansion joints.

A

d) Expansion joints.

82
Q

At 180 degrees Fahrenheit, a baseboard heating element emits 350 BTU/hr/ft. How many feet of element would be put on a 30-foot-long wall to accommodate a heat loss of 4,900 BTUs?

a) 14’
b) 10’
c) 28’
d) 32

A

b) 10’

he calculation is based on the BTU/hr/ft output of the baseboard heating element. For a heat loss of 4,900 BTUs and an output of 350 BTU/hr/ft, divide 4,900 by 350 to get approximately 14 feet of element.

83
Q

The safest and most effective method for using a wrench is by?

a) pulling towards you
b) pushing away from you
c) put a pipe on end and push
d) can be used as a hammer

A

a) pulling towards you

84
Q

What determines the size of a “C” clamp?

a) By the length of the handle
b) By the length of the threaded screw
c) By the cross sectional area of the body casting
d) By the size of the jaw opening

A

d) By the size of the jaw opening

85
Q

If the air maintenance device is set at 35 psi, which of the following pressures should the relief valve release at?

a) 42 psi
b) 36 psi
c) 50 psi
d) 54 psi

A

b) 36 psi

86
Q

What are the typical cut-in and cut-out pressures for a private residential water system?

a) 241 kPa and 380 kPa / 35 psi and 55 psi
b) 207 kPa and 345 kPa / 30 psi and 50 psi
c) 103 kPa and 241 kPa / 15 psi and 35 psi
d) 138 kPa and 207 kPa / 20 psi and 30 psi

A

b) 207 kPa and 345 kPa / 30 psi and 50 psi

87
Q

What is the greatest lift that a shallow well jet pump can achieve?

a) 21ft
b) 25ft
c) 32ft
d) 27ft

A

b) 25ft

88
Q

In an acetylene cylinder, acetylene is stabilised by which of the following?

a) feron
b) acetone
c) water
d) PE

A

b) acetone

89
Q

Using 45° elbows, a cold water pipe is offset by 1,2 metres. What is the estimated length of the pipe that runs diagonally?

a) 1.8 m
b) 1.7 m
c) 2.0 m
d) 1.5 m

A

b) 1.7 m

90
Q

How can the freezing of an effluent line exiting a septic tank be prevented?

a) Install a frost box where more than 1.2m of cover.
b) Use more hot water in the building.
c) Increase the effluent line one pipe size.
d) Lower the effluent line below frost level.

A

d) Lower the effluent line below frost level.

91
Q

Sprinkler pipe that is combustible may breach a vertical or horizontal fire
separation if?

a) fire compartments on each side of the fire separation are sprinklered
b) piping has a diameter not more than 1/2 in
c) under no circumstances
d) piping has a diameter not more than 1/2 in and does not contain chlorine
gas

A

a) fire compartments on each side of the fire separation are sprinklered

92
Q

When evaluating pipes when a hydrostatic test is impractical, is it possible to do a pneumatic test?

a) Approval of the Safety Codes Officer and acceptance from the owner.
b) Approval of the Safety Codes Officer and site super-Intendant.
c) Approval of the Safety Codes Officer is required.
d) Because of the hazards involved a pneumatic test will not be permitted.

A

c) Approval of the Safety Codes Officer is required.

93
Q

During a fire, which of the following will trigger a single interlocked pre-action system?

a) Activation of sprinkler on branch line.
b) Activation of fire detection system.
c) Loss of air in sprinkler piping branch lines.
d) Activation of low pressure alarm.

A

b) Activation of fire detection system.

94
Q

A 20m by 26m flat roof with a 6m by 20m horizontal wall extending along
one side. Calculate the diameter of the circular rain water leader if the local 15-
minute rainfall intensity is 24 millimetres.

a) 7
b) 2
c) 9
d) 6

A

d) 6

95
Q

Which of the following is the smallest trap size that does not need venting
on a floor drain?

a) 3in
b) 2in
c) 1 ½ in
d) 1in

A

b) 2in

96
Q

What would cause the solder to bead up and fall off the copper tube and fitting instead of entering the junction if the right heating method was used?

a) not enough heat applied.
b) no flux applied to tube and fitting.
c) solder has too low of a melting point.
d) inside of the pipe was not cleaned.

A

b) no flux applied to tube and fitting.

97
Q

This symbol is displayed on a product that you intend to use. What personal protective equipment do you anticipate wearing?

a) Supplied air respirator and full face mask.
b) Fire resistant clothing.
c) Dust mask and leather work gloves.
d) Chemically resistant gloves, apron and a face shield.

A

d) Chemically resistant gloves, apron and a face shield.

98
Q

A 26.5-meter-long, 4-inch-diameter stainless steel pipe requires hangers spaced every 1.6 metres. With hangers at both ends of the pipe run, how many hangers are necessary to support the pipe?

a) 18
b) 14
c) 20
d) 22

A

c) 20

99
Q

What is the expansion tank’s primary role in a hot water system?

a) It collects the air in the system, thus preventing air lock of the system while in
operation.
b) It acts as a safety chamber in case of over firing of the boiler.
c) It provides the necessary space for the air required in the system.
d) It allows the volume of the water in the system to change to maintain working
pressure.

A

d) It allows the volume of the water in the system to change to maintain working
pressure.

100
Q

Which identifying techniques are used to prevent the inappropriate connecting of medical gas outlets?

a) Double-Insert Safety System and Pin-Index Safety System.
b) Diameter-Index Safety System and Pin-Insert Safety System.
c) Diameter-Index Safety System and Thread-Index Safety System.
d) Diameter-Index Safety System and Pin-Index Safety System.

A

d) Diameter-Index Safety System and Pin-Index Safety System.

Plumbing Year 4 (28 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions