Plumbing IP Review #2 Part A

Question 1

1. And electric hot water tank with emerging elements is considered to be:
   a. 70% efficient
   b. 80% efficient
   c. 90% efficient
   d. 100% efficient

Answer 1

d. 100% efficient

Question 2

2. 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

Answer 2

c. Has a control valve that activates the burner when water is drawn

Question 3

3. 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

Answer 3

a. Slow the exit of hot combustion gases

Question 4

4. 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

Answer 4

b. BTU rating of hot water tank

has btu rating of the valve but not HWT

Question 5

5. 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

Answer 5

a. Installed during the rough in stage

Question 6

6. 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

Answer 6

b. One size larger than the largest fixture outlet pipe

Question 7

7. 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

Answer 7

d. Both B and C

TY AKA san tee

Question 8

8. The vertical water distribution pipes in the building are referred to as
   a. Stacks
   b. Risers
   c. Branches
   d. Mains

Answer 8

b. Risers

Question 9

9. 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

Answer 9

a. Type K or L soft copper tube

Question 10

10. ABS or PVC horizontal piping must be supported at intervals not exceeding:
    a. 3’
    b. 4’
    c. 5’
    d. 6’

Answer 10

b. 4’

Question 11

11. An 1/8 bend refers to a cast iron fittings to change direction by::
    a. 22 1/2°
    b. 45°
    c. 60°
    d. 90°

Answer 11

b. 45°

Question 12

12. 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

Answer 12

c. Globe valve

Question 13

13. 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

.

Answer 13

c. Without using flux

Question 14

14. The most common cause of the collapse of the hot water tank is:
    a. Vacuum
    b. Excessive heat
    c. Excessive pressure
    d. Rough handling

Answer 14

a. Vacuum

Question 15

15. 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

Answer 15

b. 18.2 psi

42 x .433

Question 16

16. 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

Answer 16

b. weight of water times surface area

Question 17

17. The max length of a disposal field lateral, according to the BC Health Act:;
    a. 50’
    b. 75’
    c. 100’
    d. 150’

Answer 17

c. 100’

Question 18

18. 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

Answer 18

d. prevent cycling of the pump

Question 19

19. 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

Answer 19

d. all of the above

Question 20

20. The minimum diameter for a water service is:
    a. 1/2”
    b. 5/8”
    c. 3/4”
    d. 1”

Answer 20

c. 3/4”

Question 21

21. 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

Answer 21

d. a pitch of 1/4” lift

Question 22

22. 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

Answer 22

b. sanitary and storm sewage

Question 23

23. 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

Answer 23

a. 1 pipe diameter

Question 24

24. 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

Answer 24

d. trap seal depth

Question 25

25. 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

Answer 25

d. public WC flush valve

Question 26

26. 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

Answer 26

d. from its upper end to the farthest downstream fixture that it serves

Question 27

27. 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

Answer 27

d. the total flow through the meter

Question 28

28. Which of the following meters is two meters in one?
    a. turbine
    b. displacement
    c. oscillating piston
    d. compound

Answer 28

d. compound

Question 29

33. 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

Answer 29

c. a tag line is used

Question 30

35. 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

Answer 30

a. 80 to 100°F

Question 31

36. 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

Answer 31

b. larger than the drive line

Question 32

37. 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

Answer 32

c. decreasing the pressure in the ejector venturi

Question 33

38. 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

Answer 33

b. well casing below the frost line

Question 34

39. 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

Answer 34

a. outdoor reset control

Question 35

40. 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

Answer 35

a. roller hanger

Question 36

41. This valve can modulate water temperature in a hydronic heating system:
    a. balancing valve
    b. bypass valve
    c. pressure regulating valve
    d. mixing valve

Answer 36

d. mixing valve

Question 37

42. The material used for medical gas pipeline is:
    a. pickled steel
    b. galvanized iron
    c. degreased copper
    d. UV-stabilized plastic

Answer 37

c. degreased copper

Question 38

43. Which of the following pipes has no “makeup”?
    a. screwed
    b. socket weld
    c. no-hub cast iron
    d. sweat copper

Answer 38

c. no-hub cast iron

Question 39

44. Copper tubing sizes are specified by their:
    a. inside diameter
    b. outside diameter
    c. schedule
    d. either a or b

Answer 39

b. outside diameter

Question 40

45. 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

Answer 40

c. clean the pipe and fitting

Question 41

46. 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

Answer 41

b. basin wrench

Question 42

47. “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

Answer 42

c. a change in the temperature of matter

Question 43

49. 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

Answer 43

b. clear water waste

Question 44

50. 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

Answer 44

b. its developed length from its upper end to the furthest soil-or-waste pipe that it serves

Question 45

51. 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

Answer 45

c. backwater valve

Question 46

52. 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

Answer 46

c. on the dead end of the rope

Question 47

53. 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

Answer 47

c. as the building progresses through its construction

Question 48

54. 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

Answer 48

b. trisodium phosphate

Question 49

55. 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

Answer 49

b. using electric current and a spring

Question 50

56. 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

Answer 50

b. turn the needle valve adjusting screw on the body of the flush valve counter-clockwise

Question 51

57. 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

Answer 51

b. increasing the Ph level

Question 52

58. 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

Answer 52

a. siphonic action

Question 53

59. 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

Answer 53

b. Between the flush valve and the toilet bowl

Question 54

61. Polyethylene pipe shall not be used except for :
    a. sleeving
    b. cold water distribution pipe
    c. water service supply
    d. basin supply tubes

Answer 54

c. water service supply

Question 55

60. 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

Answer 55

a. above ground inside a building

Question 56

62. 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

Answer 56

c. 1 1/2 times the max potential pressure

Question 57

63. 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

Answer 57

c. needle valve

Question 58

64. 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

Answer 58

a. 18 psi

50’ x .433 = 21.65

21.65 + 15 = 36.65

55 - 36.65 = 18.35 psi

Question 59

65. 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

Answer 59

b. trade waste systems

Question 60

66. 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

Answer 60

e. all of the above

Question 61

67. What condition in water does not contribute to corrosion of the piping?
    a. low pH
    b. calcium sulphate
    c. calcium carbonate
    d. sodium chloride

Answer 61

c. calcium carbonate

Question 62

68. 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

Answer 62

b. maintain the correct ratio of water to air in the tank

Question 63

69. 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

Answer 63

b. The highest portion of the inside lower surface of the trap

Question 64

70. 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

Answer 64

d. Food waste will enter the overflow

Question 65

71. 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

Answer 65

a. Noise

Question 66

72. 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

Answer 66

d. All the above

Question 67

73. 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)

Answer 67

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

Question 68

74. excessively high pressure will cause:
    a. Streamline flow
    b. Noisy flow
    c. Quiet flow
    d. Pleasant flow

Answer 68

b. Noisy flow

Question 69

75. 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

Answer 69

c. a branch

Question 70

76. 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”

Answer 70

d. 31 1/4”

15’8” = 15.67’ / 6 = 2.61’ x 12 = 31.3” = 31 1/4”

Question 71

77. 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

Answer 71

d. + / - 1 Inch WC

based on a 38mm trap seal

Question 72

78. 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

Answer 72

a. Prevent contamination of the nozzle

Question 73

79. 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

Answer 73

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

Question 74

80. 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

Answer 74

b. Expansion and contraction

Question 75

81. The max the spacing of supports or vertical piping shall be:
    a. 2.25m
    b. 3.75m
    c. 7.5m
    d. 12.7 m

Answer 75

c. 7.5m

Question 76

82. 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

Answer 76

d. Hot water systems

Question 77

83. Polychloroprene a minimum thickness of:
    a. 0.50 mm
    b. 0.56 mm

c, 1.73 mm

d. 2.89 mm

Answer 77

d. 2.89 mm

Question 78

87. What is the maximum number of showerheads that may be served by single shower drain?
    a. 5
    b. 6
    c. 7
    d. 8

Answer 78

b. 6

Question 79

88. ABS or PVC are classified as which of the following types of plastic?
    a. Thermoplastics
    b. Hard plastic
    c. Thermoset plastic
    d. Soft plastic

Answer 79

a. Thermoplastics

Question 80

89. Concrete pipe shall not be used in:
    a. A building sewer
    b. Building drains above ground
    c. Storm sewer
    d. Combined sewers

Answer 80

b. Building drains above ground

Question 81

90. C.I.S.P. shall not be:
    a. Soil pipes
    b. waste pipes
    c. septic systems
    d. water lines

Answer 81

d. water lines

Question 82

91. 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°

Answer 82

c. 45°

Question 83

92. 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

Answer 83

a. 1.2 m

Question 84

93. 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

Answer 84

b. 15 min

Question 85

94. 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

Answer 85

d. 120 min

Question 86

95. 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

Answer 86

a. Base point from which levels are measured

Question 87

96. 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

Answer 87

d. All of the above

Question 88

97. 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’)

Answer 88

d. 2.4 m (8’)

Question 89

98. What is the process that draws solder into a joint known as:
    a. Convection
    b. Conduction
    c. Capillery action
    d. Both A and B

Answer 89

c. Capillery action

Question 90

99. 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

Answer 90

b. Indirect connection