Plumbing IP Review #2 Part A Flashcards
1
Q
- And electric hot water tank with emerging elements is considered to be:
a. 70% efficient
b. 80% efficient
c. 90% efficient
d. 100% efficient
A
d. 100% efficient
2
Q
- Instantaneous hot water heater:
a. Stores hot water instantly for future use
b. Heats the water after it leaves the system
c. Has a control valve that activates the burner when water is drawn
d. Is 100% efficient
A
c. Has a control valve that activates the burner when water is drawn
3
Q
- Baffle is often placed in the flue passage of a centre flue hot water tank to:
a. Slow the exit of hot combustion gases
b. Prevent the tank from freezing
c. Help clean out the flue passage
d. Speed up the exit of hot combustion gases
A
a. Slow the exit of hot combustion gases
4
Q
- Which of the following is not found on a T & P relief valve information tag:
a. Size of valve
b. BTU rating of hot water tank
c. Pressure setting
d. Sensor length
A
b. BTU rating of hot water tank
has btu rating of the valve but not HWT
5
Q
- Stall urinals are:
a. Installed during the rough in stage
b. Prohibited by code
c. Placed so that the front lip or rim is slightly above the finish floor
d. Installed during the finishing stage
A
a. Installed during the rough in stage
6
Q
- A single trap may serve a 3 compartment sink if it is:
a. The same size of as the fixture outlet pipes
b. One size larger than the largest fixture outlet pipe
c. No more than 900 mm from the furthest fixture outlet
d. Equipped with a union ring for removal
A
b. One size larger than the largest fixture outlet pipe
7
Q
- A “TY” can be used to connect:
a. A fixture drain to a horizontal branch
b. Vent pipe to a horizontal branch
c. Vent pipe to another vent pipe
d. Both B and C
A
d. Both B and C
TY AKA san tee
8
Q
- The vertical water distribution pipes in the building are referred to as
a. Stacks
b. Risers
c. Branches
d. Mains
A
b. Risers
9
Q
- The water service pipe to a building should be:
a. Type K or L soft copper tube
b. Type K hard copper tube
c. Type L soft copper tube
d. Type K or L hard copper tube
A
a. Type K or L soft copper tube
10
Q
- ABS or PVC horizontal piping must be supported at intervals not exceeding:
a. 3’
b. 4’
c. 5’
d. 6’
A
b. 4’
11
Q
- An 1/8 bend refers to a cast iron fittings to change direction by::
a. 22 1/2°
b. 45°
c. 60°
d. 90°
A
b. 45°
12
Q
- When installing a bypass for a pressure reducing valve it is best to use a:
a. Gate valve
b. Plug valve
c. Globe valve
d. Ball valve
A
c. Globe valve
13
Q
- BCuP brazing alloy maybe used to join copper tube to copper fittings:
a. Only a flux is also used
b. Only if the copper tube is hard drawn
c. Without using flux
d. Without exceeding 800°F
.
A
c. Without using flux
14
Q
- The most common cause of the collapse of the hot water tank is:
a. Vacuum
b. Excessive heat
c. Excessive pressure
d. Rough handling
A
a. Vacuum
15
Q
- A pipe full of water 52 feet high would produce the pressure, at a point 10 feet up from the bottom, of approximately:
a. 4.33 psi
b. 18.2 psi
c. 22.5 psi
d. 62.4 psi
A
b. 18.2 psi
42 x .433
16
Q
- What would be the most correct definition of total force?
a. total weight of water divided by surface area
b. weight of water times surface area
c. weight of water per square inch
d. pressure divided by surface area
A
b. weight of water times surface area
17
Q
- The max length of a disposal field lateral, according to the BC Health Act:;
a. 50’
b. 75’
c. 100’
d. 150’
A
c. 100’
18
Q
- A pressure tank’s main purpose, when used in a rural water supply system, is to:
a. stop water hammer
b. allow the water to settle before use
c. purify the water before use
d. prevent cycling of the pump
A
d. prevent cycling of the pump
19
Q
- The actual lift of a pump is less than the theoretical lift. This is caused by
a. The loss of efficiency due to friction
b. the inability of the pump to create a perfect vacuum
c. the changes in atmosphere pressure above sea level
d. all of the above
A
d. all of the above
20
Q
- The minimum diameter for a water service is:
a. 1/2”
b. 5/8”
c. 3/4”
d. 1”
A
c. 3/4”
21
Q
- Threaded drainage fittings installed in a vertical stack are tapped to provide:
a. for a short alignment of branch lines
b. for a short thread engagement
c. a pitch of 1/8” lift
d. a pitch of 1/4” lift
A
d. a pitch of 1/4” lift
22
Q
- A combined sewer service carries:
a. storm sewage and groundwater
b. sanitary and storm sewage
c. sanitary sewage and clear-water waste
d. sanitary and groundwater
A
b. sanitary and storm sewage
23
Q
- The max fall on a trap arm from the weir to the vent is :
a. 1 pipe diameter
b. 2 pipe diameter
c. 1/4” per foot
d. 1/2” per foot
A
a. 1 pipe diameter
24
Q
- The vertical distance between the trap weir and the trap dip is the:
a. vent relief distance
b. trap dip
c. revent distance
d. trap seal depth
A
d. trap seal depth
25
Q
- The pluming fixture with the greatest fixture unit water demand is:
a. urinal valve
b. public WC flush tank
c. private WC flush tank
d. public WC flush valve
A
d. public WC flush valve
26
Q
- The developed length of a branch vent shall be:
a. from its upper end to its connection to the lowest vent pipe
b. from its upper end to a connection point a min 6” above the flood level rim of the closest fixture
c. from its upper end to a point 6” above the flood level rim of the farthest fixture
d. from its upper end to the farthest downstream fixture that it serves
A
d. from its upper end to the farthest downstream fixture that it serves
27
Q
- an ordinary displacement-type water meter registers:
a. the rate of flow through the meter
b. the velocity of flow through the meter
c. the capacity of the meter
d. the total flow through the meter
A
d. the total flow through the meter
28
Q
- Which of the following meters is two meters in one?
a. turbine
b. displacement
c. oscillating piston
d. compound
A
d. compound
29
Q
- To prevent a load of pipe that is being lifted from swinging:
a. a double sling is used
b. a double cable is used
c. a tag line is used
d. a pipe strap is used
A
c. a tag line is used
30
Q
- The max surface temp that a hot water radiant floor heating panel should not exceed is:
a. 80 to 100°F
b. 100 to 140°F
c. 160 to 180°F
d. 180-200°F
A
a. 80 to 100°F
31
Q
- On a deep well convertible jet pump, the suction line is:
a. the same as the drive line
b. larger than the drive line
c. smaller than the drive line
d. not required
A
b. larger than the drive line
32
Q
- An ejector nozzle in a deep well convertible jet pump causes water from the well to flow into the ejector by:
a. ejector nozzles are not used in pumps
b. increasing the pressure in the ejector venturi
c. decreasing the pressure in the ejector venturi
d. decreasing the velocity of the water
A
c. decreasing the pressure in the ejector venturi
33
Q
- The pitless adapter is located in the:
a. well casing
b. well casing below the frost line
c. well casing below the ejector
d. well casing below the standing water line
A
b. well casing below the frost line
34
Q
- This control used on a hot water heating system adjusts the boiler water temperature by measuring the outside air temperature:
a. outdoor reset control
b. aquastat
c. thermostat
d. temperature limit control
A
a. outdoor reset control
35
Q
- This pipe hanger is best suited to allow pipe movement due to heating and cooling of the pipe:
a. roller hanger
b. clevis hanger
c. ring hanger
d. strap hanger
A
a. roller hanger
36
Q
- This valve can modulate water temperature in a hydronic heating system:
a. balancing valve
b. bypass valve
c. pressure regulating valve
d. mixing valve
A
d. mixing valve
37
Q
- The material used for medical gas pipeline is:
a. pickled steel
b. galvanized iron
c. degreased copper
d. UV-stabilized plastic
A
c. degreased copper
38
Q
- Which of the following pipes has no “makeup”?
a. screwed
b. socket weld
c. no-hub cast iron
d. sweat copper
A
c. no-hub cast iron
39
Q
- Copper tubing sizes are specified by their:
a. inside diameter
b. outside diameter
c. schedule
d. either a or b
A
b. outside diameter
40
Q
- Which of the following is not a purpose of a solder flux?
a. remove capillary action
b. remove mild oxides
c. clean the pipe and fitting
d. prevent oxidation of the surface being heated
A
c. clean the pipe and fitting
41
Q
- Which of the following tools would best be used to tighten a kitchen faucet down to the countertop?
a. strap wrench
b. basin wrench
c. crescent wrench
d. pipe wrench
A
b. basin wrench
42
Q
- “Sensible heat” is defined as heat required to bring about:
a. a change in the chemical state of matter
b. a change in the physical state of matter
c. a change in the temperature of matter
d. none of the above
A
c. a change in the temperature of matter
43
Q
- Waste water with impurity that will not be harmful to health and may include cooling water and condensate drainage from the refrigeration and air conditioning equipment, and cooled condensate from steam heating systems, but does not include storm water, is known as:
a. building drainage
b. clear water waste
c. sanitary drainage water
d. subsoil dranage
A
b. clear water waste
44
Q
- The size of a branch vent is determined by its hydraulic load and:
a. its overall length
b. its developed length from its upper end to the furthest soil-or-waste pipe that it serves
c. its developed length from its upper end to the nearest soil-or-waste pipe
d. its overall length, including the length of the stack vent that connects it to a soil-or-waste pipe
A
b. its developed length from its upper end to the furthest soil-or-waste pipe that it serves
45
Q
- A valve that prevents liquids from flowing back into a drainage system is known as:
a. check valve
b. flapper valve
c. backwater valve
d. backsiphonage preventer
A
c. backwater valve
46
Q
- In reference to wire rope clips, the “U” bolt portion of the clip mist always be placed:
a. on the pulling end of the rope
b. on the eye of the rope
c. on the dead end of the rope
d. on alternate ends of the rope
A
c. on the dead end of the rope
47
Q
- Where hose and standpipe systems are installed to provide fire protection during construction of a building, they shall be installed:
a. upon completion of the framing
b. upon completion of the building
c. as the building progresses through its construction
d. immediately upon completion of the water service
A
c. as the building progresses through its construction
48
Q
- Copper tube used on medical gas systems should arrive on site capped and degreased. If onsite cleaning is required, which of the following chemicals shall be used?
a. carbon tetrachloride
b. trisodium phosphate
c. ethylene glycol
d. any of the above
A
b. trisodium phosphate
49
Q
- If a solenoid valve is to operate in a system using liquid, how would the valve be closed?
a. using electric current
b. using electric current and a spring
c. using hydaulic force
d. using hydraulic force and a spring
A
b. using electric current and a spring
50
Q
- Which of the following is the correct way to shorten the flush of a “flushometer” valve?
a. turn the needle valve adjusting screw on the body of the flush valve clockwise
b. turn the needle valve adjusting screw on the body of the flush valve counter-clockwise
c. partially close the control stop
d. none of the above
A
b. turn the needle valve adjusting screw on the body of the flush valve counter-clockwise
51
Q
- The corrosivity of water can be best reduced by:
a. adding sodium chloride
b. increasing the Ph level
c. adding oxygen
d. all of the above
A
b. increasing the Ph level
52
Q
- A urinal flush tank uses the following method to effect a flush:
a. siphonic action
b. pull chain action
c. hand operation
d. venturi effect
A
a. siphonic action
53
Q
- Backsiphonage from a flush valve-operated water closet can be prevented by the installation of a vacuum breaker:
a. on the upstream side of the flush valve
b. between the flush valve and the toilet bowl
c. between the stop valve and the flush valve
d. in the waste trap
A
b. Between the flush valve and the toilet bowl
54
Q
- Polyethylene pipe shall not be used except for :
a. sleeving
b. cold water distribution pipe
c. water service supply
d. basin supply tubes
A
c. water service supply
55
Q
- Concrete pipe shall not be used:
a. above ground inside a building
b. underground
c. for a building sewer
d. above ground outside a building
A
a. above ground inside a building
56
Q
- Piping, fittings and joints used in pressure sewer, force main or sump pump discharge applications shall be capable of withstanding not less than:
a. 2 times the operating pressure
b. 1 1/2 times the operating pressure
c. 1 1/2 times the max potential pressure
d. 150 pounds per square inch pressure
A
c. 1 1/2 times the max potential pressure
57
Q
- Outlets which cause pressure drops should be provided with regulating valves. The type of valve most likely to be used here is the:
a. compression stop
b. gate valve
c. needle valve
d. ball valve
A
c. needle valve
58
Q
- If the pressure in a water main is 55 psi, and a pressure of 15 psi must be maintained at a fixture in a building which is 50’ above the main, the pressure loss due to friction in the pipe between the main and the fixture must be limited to no greater than:
a. 18 psi
b. 25 psi
c. 28 psi
d. 33 psi
A
a. 18 psi
50’ x .433 = 21.65
21.65 + 15 = 36.65
55 - 36.65 = 18.35 psi
59
Q
- The name sometimes used to describe a system of the piping which carries that waste from drains of the same type (often hub drains and/or sinks) often used in meat packaging plants or food process areas is:
a. combination waste and vent systems
b. trade waste systems
c. vacusan system
d. sovent system
A
b. trade waste systems
60
Q
- The suction lift that a pump can produce depends upon:
a. the power of the motor
b. the diameter of the impeller
c. the speed of the impeller
d. atmospheric pressure
e. all of the above
A
e. all of the above
61
Q
- What condition in water does not contribute to corrosion of the piping?
a. low pH
b. calcium sulphate
c. calcium carbonate
d. sodium chloride
A
c. calcium carbonate
62
Q
- The main objective of an air volume control is to:
a. Maintain the correct amount of water in the tank
b. maintain the correct ratio of water to air in the tank
c. maintain the correct pressure in the system
d. turn the pump motor when all air is exhausted from the tank
A
b. maintain the correct ratio of water to air in the tank
63
Q
- The weir of the trap is:
a. The vertical distance from the seal to the dip
b. The highest portion of the inside lower surface of the trap
c. The lowest portion of the inside upper surface of the trap
d. The water surface on the fixture outlet of the trap
A
b. The highest portion of the inside lower surface of the trap
64
Q
- The lavatory should not be installed in a place that is liable to be use for washing dishes because:
a. the waste is too small
b. The basin is too small
c. No crumb cup strainers installed
d. Food waste will enter the overflow
A
d. Food waste will enter the overflow
65
Q
- The tube which water flows to refill the flush tank of a water closet discharges near the bottom of the tank primarily to prevent:
a. Noise
b. Sediment from settling on the bottom of the tank
c. Splashing over the rim of the tank
d. Disturbance of the trap seal
A
a. Noise
66
Q
- Water closet tank has a tendency to drip condensation on the floor year round. This could be caused:
a. Difference between the ambient temperature of the air and the water tank
b. The room is not receiving an adequate supply of fresh air
c. The water closet is installed too close to heading out
d. All the above
A
d. All the above
67
Q
- A fixture requiring 103 kpa to operate is located 5 m above the pneumatic tank and pump. If 30 kpa will be lost to friction what would the minimum switch setting be?
A. 140 kpa (20psi)
B. 160 kpa (23psi)
C. 186 kpa (27psi)
D. 280 kps (40psi)
A
C. 186 kpa (27psi)
5 x 9.81 = 49.05 kPa
49.05 + 30 = 79.05 kPa
103 + 79.05 = 182.05 kPa
182.05 / 6.896 = 26.35 psi
68
Q
- excessively high pressure will cause:
a. Streamline flow
b. Noisy flow
c. Quiet flow
d. Pleasant flow
A
b. Noisy flow
69
Q
- Soil or waste pipe extending laterally from a soil or waste stack and connected at its upstream and to two fixture drains and one story would be called:
a. A waste stack
b. A fixture drain
c. a branch
d. a wet vent
A
c. a branch
70
Q
- 22” x 18” lavs are to be evenly space between two walls 15’8” apart. What is the measurement C - C of the labs if there is an equal space against the walls?
a. 30”
b. 30 1/2”
c. 31”
d. 31 1/4”
A
d. 31 1/4”
15’8” = 15.67’ / 6 = 2.61’ x 12 = 31.3” = 31 1/4”
71
Q
- The pressures in a sanitary drainage system should not vary more than:
a. + / - 1 psi
b. + / - 1 foot WC
c. + / - 1 Hg WC
d. + / - 1 Inch WC
A
d. + / - 1 Inch WC
based on a 38mm trap seal
72
Q
- The shield on a drinking fountain bubbler serves the following purpose:
a. Prevent contamination of the nozzle
b. Direct the water stream at the proper angle
c. Reduces the water pressure
d. Prevents backflow
A
a. Prevent contamination of the nozzle
73
Q
- If a soil-or-waste stack passes through two stories and had seven water closet straining to hear what is the minimum permissible the size of the stack?
a. 2 inch
b. 3 inch
c. 4 inch
d. 5 inch
A
c. 4 inch
2) Branch and building drains downstream of the third water closet fixture drain connection shall be not less than 4 inches in size.
3) Soil-or-waste stacks that serve more than 6 water closets shall be not less than 4 inches in size
74
Q
- Every roof drain shall be securely connected to a leader and provisions shall be made for:
a. Condensation
b. Expansion and contraction
c. Overflow
d. Leakage
A
b. Expansion and contraction
75
Q
- The max the spacing of supports or vertical piping shall be:
a. 2.25m
b. 3.75m
c. 7.5m
d. 12.7 m
A
c. 7.5m
76
Q
- PVC water pipe and fittings shall not be used for:
a. Cold water systems
b. Water distribution piping
c. Water service piping
d. Hot water systems
A
d. Hot water systems
77
Q
- Polychloroprene a minimum thickness of:
a. 0.50 mm
b. 0.56 mm
c, 1.73 mm
d. 2.89 mm
A
d. 2.89 mm
78
Q
- What is the maximum number of showerheads that may be served by single shower drain?
a. 5
b. 6
c. 7
d. 8
A
b. 6
79
Q
- ABS or PVC are classified as which of the following types of plastic?
a. Thermoplastics
b. Hard plastic
c. Thermoset plastic
d. Soft plastic
A
a. Thermoplastics
80
Q
- Concrete pipe shall not be used in:
a. A building sewer
b. Building drains above ground
c. Storm sewer
d. Combined sewers
A
b. Building drains above ground
81
Q
- C.I.S.P. shall not be:
a. Soil pipes
b. waste pipes
c. septic systems
d. water lines
A
d. water lines
82
Q
- Relief and is required under certain conditions Venezuela or a waste of changes directions vertically more than:
a. Any number of degrees
b. 22 1/2°
c. 45°
d. 60°
A
c. 45°
83
Q
- ABS plastic pipe installed nominaly horizontal shall be supported at intervals not exceeding:
a. 1.2 m
b. 1.6m
c. 2.0 m
d. 2.4m
A
a. 1.2 m
84
Q
- When a water test is needed on the drainage system, the piping shall be kept filled with water for:
a. 10 min
b. 15 min
c. 30 min
d. 60 min
A
b. 15 min
85
Q
- When an air test is made on a portable water system, the system shows down an air pressure of 700 kpa for at least:
a. 30 min
b. 60 min
c. 90 min
d. 120 min
A
d. 120 min
86
Q
- The location and grade on a benchmark shown on a site plan denotes the:
a. Base point from which levels are measured
b. Highest elevation in the Project
c. Point out which the water service enters
d. Lowest elevation in the Project
A
a. Base point from which levels are measured
87
Q
- A flow switch may be found in which of the following systems:
a. Hot water heating
b. Fire sprinkler
c. Hose and standpipe
d. All of the above
A
d. All of the above
88
Q
- Grease interceptor from a three compartment pot sink shall be installed so that it’s vent is no more than ____ away
a. .6m (2’)
b. 1 m (3’)
c. 1.2 m (4’)
d. 2.4 m (8’)
A
d. 2.4 m (8’)
89
Q
- What is the process that draws solder into a joint known as:
a. Convection
b. Conduction
c. Capillery action
d. Both A and B
A
c. Capillery action
90
Q
- The type of waste connection that will be utilized when installing a potato peeler is
a. Direct connection
b. Indirect connection
c. Double trapped
d. Indirect connection through a grease interceptor
A
b. Indirect connection
