Plumbing Practical Problem PDF

PLUMBING PRACTICAL PROBLEM 1. A variation of pipe wrench with a swiveling serrated jaw and knurled control knob located between the frame forming the head and the handled of the wrench? a. Pipe wrench b. Stillson wrench c. Rap wrench d. End pipe wrench 1. A variation of pipe wrench wi...

PLUMBING PRACTICAL PROBLEM 1. A variation of pipe wrench with a swiveling serrated jaw and knurled control knob located between the frame forming the head and the handled of the wrench? a. Pipe wrench b. Stillson wrench c. Rap wrench d. End pipe wrench 1. A variation of pipe wrench with a swiveling serrated jaw and knurled control knob located between the frame forming the head and the handled of the wrench? a. Pipe wrench b. Stillson wrench c. Rap wrench d. End pipe wrench 2. As an experienced plumber, what is the recommended size of the drain serving water closet? a. 3 in. b. 4 in. c. 5 in. d. 6 in. 2. As an experienced plumber, what is the recommended size of the drain serving water closet? a. 3 in. b. 4 in. c. 5 in. d. 6 in. 3. A brewery plant requires a piping system to convey beer, ale, spirituous liquor and distilled water. What kind of pipe to be used? a. Black Tin Pipe b. Copper Pipe c. Cast Iron Pipe d. Terra-cotta Pipe 3. A brewery plant requires a piping system to convey beer, ale, spirituous liquor and distilled water. What kind of pipe to be used? a. Black Tin Pipe b. Copper Pipe c. Cast Iron Pipe d. Terra-cotta Pipe 4. A red spiral line painted on a pipe identified the pipe as _____. a. Cast iron pipe b. Wrought-iron pipe c. Copper pipe d. Brass pipe 4. A red spiral line painted on a pipe identified the pipe as _____. a. Cast iron pipe b. Wrought-iron pipe c. Copper pipe d. Brass pipe 5. A hotel requires hot and cold water supplies. What kind of pipes best suited? a. Cast iron pipe b. Copper pipe c. Galvanized wrought iron pipe d. Plastic/synthetic pipe 5. A hotel requires hot and cold water supplies. What kind of pipes best suited? a. Cast iron pipe b. Copper pipe c. Galvanized wrought iron pipe d. Plastic/synthetic pipe 6. A registered master plumber is consulted to install piping system for water, gas, steam and oil. What kind of pipe is recommended? a. Cast iron pipe b. Plastic pipe c. Lead pipe d. Wrought iron pipe 6. A registered master plumber is consulted to install piping system for water, gas, steam and oil. What kind of pipe is recommended? a. Cast iron pipe b. Plastic pipe c. Lead pipe d. Wrought iron pipe 7. What kind of pipe to be used where heating panels are considered in concrete slabs for the purpose of melting snow? a. Plastic pipe b. Wrought iron pipe c. Lead pipe d. Terra-cotta pipe 7. What kind of pipe to be used where heating panels are considered in concrete slabs for the purpose of melting snow? a. Plastic pipe b. Wrought iron pipe c. Lead pipe d. Terra-cotta pipe 8. When cutting pipe that coated internally with enamel or glass, delicate core should be taken to avoid cracking or chipping the internal coating. What kind of tool that should NEVER used for cutting such pipe? a. Adjustable hacksaw b. Pipe reamer c. Wheel pipe cutter d. Square-edge pipe cutter 8. When cutting pipe that coated internally with enamel or glass, delicate core should be taken to avoid cracking or chipping the internal coating. What kind of tool that should NEVER used for cutting such pipe? a. Adjustable hacksaw b. Pipe reamer c. Wheel pipe cutter d. Square-edge pipe cutter 9. When a very short pipe is threaded. What will you see? a. Hollow jumper b. Nipple chuck c. Solid jumper d. Pipe tong 9. When a very short pipe is threaded. What will you see? a. Hollow jumper b. Nipple chuck c. Solid jumper d. Pipe tong 10. What is that tool used for expanding the ends of lead pipe? a. Shave hook b. Turn pin c. Drift plug d. Dresser 10. What is that tool used for expanding the ends of lead pipe? a. Shave hook b. Turn pin c. Drift plug d. Dresser 11. When using an extension ladder, what will be the maximum sliding sections allowed? a. 2 ½ sliding sections b. 3 ½ sliding sections c. 2 sliding sections d. 3 sliding sections 11. When using an extension ladder, what will be the maximum sliding sections allowed? a. 2 ½ sliding sections b. 3 ½ sliding sections c. 2 sliding sections d. 3 sliding sections 12. An 8 meters aluminum ladder is used in delivering plumbing fixtures to the second the foot of the ladder be placed from the wall of the building? a. 2 meters b. 2 ½ meters c. 3 meters d. 3 ½ meters 12. An 8 meters aluminum ladder is used in delivering plumbing fixtures to the second the foot of the ladder be placed from the wall of the building? a. 2 meters b. 2 ½ meters c. 3 meters d. 3 ½ meters 13. As registered master plumber, you have to use a ladder to carry the pipes to the second floor of the building, what will be the horizontal distance from the foot of the ladder to the wall that you considered proper? a. ¼ of the ladders length b. 1/3 of the ladders length c. 1/2 of the ladders length d. 3/8 of the ladders length 13. As registered master plumber, you have to use a ladder to carry the pipes to the second floor of the building, what will be the horizontal distance from the foot of the ladder to the wall that you considered proper? a. ¼ of the ladders length b. 1/3 of the ladders length c. 1/2 of the ladders length d. 3/8 of the ladders length 14. What is that valve recommended for installation that call for throttling? a. Globe valve b. Gate valve c. Check valve d. Angle valve 14. What is that valve recommended for installation that call for throttling? a. Globe valve b. Gate valve c. Check valve d. Angle valve 15. What is the approximate height above the floor level of a kitchen sink? a. 30 inches b. 34 inches c. 36 inches d. 38 inches 15. What is the approximate height above the floor level of a kitchen sink? a. 30 inches b. 34 inches c. 36 inches d. 38 inches 16. What is the approximate height above the floor level of a built-in bathtub floor level? a. 12 inches b. 16 inches c. 18 inches d. 24 inches 16. What is the approximate height above the floor level of a built-in bathtub floor level? a. 12 inches b. 16 inches c. 18 inches d. 24 inches 17. What is the device used to support the water supply riser? a. Pipe rest b. Iron ring c. Iron insects d. Eye log bolt 17. What is the device used to support the water supply riser? a. Pipe rest b. Iron ring c. Iron insects d. Eye log bolt 18. What is that fitting necessary in a water supply system which is used to the water supply in some portion of the installation? a. Meter stop b. Valve c. Curb stop d. Corporation stop 18. What is that fitting necessary in a water supply system which is used to the water supply in some portion of the installation? a. Meter stop b. Valve c. Curb stop d. Corporation stop 19. What kind of valve is suited for the water main supply lines and pump lines? a. Angle valve b. Gate valve c. Globe valve d. Check valve 19. What kind of valve is suited for the water main supply lines and pump lines? a. Angle valve b. Gate valve c. Globe valve d. Check valve 20. Generally, the registered master plumber must be systematic in connecting the riser branches to the main of the water supply system. What will be the right angle of all branches connection to the main? a. 30 b. 45 c. 60 d. 90 20. Generally, the registered master plumber must be systematic in connecting the riser branches to the main of the water supply system. What will be the right angle of all branches connection to the main? a. 30 b. 45 c. 60 d. 90 21. What do you call the plugging of an opening with oakum, lead or other materials which are pounded into place or materials pounded into the opening? a. Caulking b. Plugging c. Stopping d. Closing 21. What do you call the plugging of an opening with oakum, lead or other materials which are pounded into place or materials pounded into the opening? a. Caulking b. Plugging c. Stopping d. Closing 22. The material used to join or connect plastic pipe is called? a. Lead b. Flux c. Solder d. Solvent cement 22. The material used to join or connect plastic pipe is called? a. Lead b. Flux c. Solder d. Solvent cement 23. What is the minimum length of time before a jointed plastic pipe be subjected to pressure test? a. 1.5 hours b. 2 hours c. 2.5 hours d. 3 hours 23. What is the minimum length of time before a jointed plastic pipe be subjected to pressure test? a. 1.5 hours b. 2 hours c. 2.5 hours d. 3 hours 24. In bending plastic, what will be the practical material to be used to prevent fattening of the pipe? a. Sand b. Gravel c. Water d. Metal spring 24. In bending plastic, what will be the practical material to be used to prevent fattening of the pipe? a. Sand b. Gravel c. Water d. Metal spring 25. What is the part of the piping of a plumbing installation which supplies the plumbing fixtures with an adequate flow of water? a. Soil and vent piping system b. Domestic hot water piping system c. Domestic water distribution system d. Water and waste piping system 25. What is the part of the piping of a plumbing installation which supplies the plumbing fixtures with an adequate flow of water? a. Soil and vent piping system b. Domestic hot water piping system c. Domestic water distribution system d. Water and waste piping system 26. What is the usual horizontal length that the cast iron be supported to prevent damage at joints caused by sagging? a. 1.25 m b. 1.5 m c. 1.75 m d. 2.0 m 26. What is the usual horizontal length that the cast iron be supported to prevent damage at joints caused by sagging? a. 1.25 m b. 1.5 m c. 1.75 m d. 2.0 m 27. What will be provided to prevent contamination from the polluted water of the fire truck to the house water supply system? a. Gate valve b. Check valves & gate valve c. Water main stop d. Water meter stop 27. What will be provided to prevent contamination from the polluted water of the fire truck to the house water supply system? a. Gate valve b. Check valves & gate valve c. Water main stop d. Water meter stop 28. What is the name of the instrument which used in caulking oakum in the joints of cast iron pipe? a. Iron rod b. Yarning iron c. Chisel d. Angle bar 28. What is the name of the instrument which used in caulking oakum in the joints of cast iron pipe? a. Iron rod b. Yarning iron c. Chisel d. Angle bar 29. On what type of building are wet standpipes generally used? a. Tall building b. Large building c. Very tall building d. Smaller building 29. On what type of building are wet standpipes generally used? a. Tall building b. Large building c. Very tall building d. Smaller building 30. What is that feature which offers a convenient water supply for firemen, making it necessary for the fire department to transport and user much expensive fire fighting apparatus? a. Stand pipe b. Fire truck ladder c. Fire truck d. Overhead water tank 30. What is that feature which offers a convenient water supply for firemen, making it necessary for the fire department to transport and user much expensive fire fighting apparatus? a. Stand pipe b. Fire truck ladder c. Fire truck d. Overhead water tank 31. Fire system piping is usually painted with? a. Red color b. Yellow color c. Green color d. Blue color 31. Fire system piping is usually painted with? a. Red color b. Yellow color c. Green color d. Blue color 32. What is the device which is to be installed on the water service between the edge of the street and the sidewalk line which serves as a control valve in case water supply in cut-off to the building? a. Curb stop b. Meter stop c. Gate valve d. Corporation stop 32. What is the device which is to be installed on the water service between the edge of the street and the sidewalk line which serves as a control valve in case water supply in cut-off to the building? a. Curb stop b. Meter stop c. Gate valve d. Corporation stop 33. What circumstances should the curb stop is used? a. When the water has to be controlled. b. When the pressure is excessive. c. When the water pressure is low. d. When the water pressure can cause flooding. 33. What circumstances should the curb stop is used? a. When the water has to be controlled. b. When the pressure is excessive. c. When the water pressure is low. d. When the water pressure can cause flooding. 34. Why is it corporation stop required when the main water pipe is tapped with pressure on? a. It serves as a meter. b. It serves as a control stop. c. It serves as a pressure balancer. d. It serves as a shut-off when water is excessive. 34. Why is it corporation stop required when the main water pipe is tapped with pressure on? a. It serves as a meter. b. It serves as a control stop. c. It serves as a pressure balancer. d. It serves as a shut-off when water is excessive. 35. It is essential that pipe threads to be cut accurately to ensure that threads for fittings will be universal so that the manufacturers of pipe threading equipment follow the American Standard. How many threads per inch for pipes having a diameter of 3 in/ 4 in/ 5 in? I. 3 inches diameter? a. 5 b. 8 c. 14 d. 18 II. 4 inches diameter? a. 5 b. 8 c. 14 d. 18 III. 3 inches diameter? a. 5 b. 8 c. 14 d. 18 35. It is essential that pipe threads to be cut accurately to ensure that threads for fittings will be universal so that the manufacturers of pipe threading equipment follow the American Standard. How many threads per inch for pipes having a diameter of 3 in/ 4 in/ 5 in? I. 3 inches diameter? a. 5 b. 8 c. 14 d. 18 II. 4 inches diameter? a. 5 b. 8 c. 14 d. 18 III. 3 inches diameter? a. 5 b. 8 c. 14 d. 18 36. The allowable tensile stress of wrought iron steel pipe is 750 psi. It is to be used for hot water supply with working pressure of 300 psi. what schedule of the pipe should you specify? N = 100P / S. a. 20 b. 40 c. 60 d. 80 36. The allowable tensile stress of wrought iron steel pipe is 750 psi. It is to be used for hot water supply with working pressure of 300 psi. what schedule of the pipe should you specify? N = 100P / S. a. 20 b. 40 c. 60 d. 80 37. A schedule of 80 wrought iron pipe can withstand a steam pressure up to? a. 125 psi b. 200 psi c. 600 psi d. 500 psi 37. A schedule of 80 wrought iron pipe can withstand a steam pressure up to? a. 125 psi b. 200 psi c. 600 psi d. 500 psi 38. A wrought iron pipe schedule of 40 can withstand a steam pressure up to? a. 125 psi b. 200 psi c. 250 psi d. 300 psi 38. A wrought iron pipe schedule of 40 can withstand a steam pressure up to? a. 125 psi b. 200 psi c. 250 psi d. 300 psi 39. Name that tool which is made of boxwood, dogwood or lignum vitae, and it is used for dressing or working sheet lead, lead pipe bends, and bath traps. a. Turn pin b. Dresser c. Shave hook d. Drift plug 39. Name that tool which is made of boxwood, dogwood or lignum vitae, and it is used for dressing or working sheet lead, lead pipe bends, and bath traps. a. Turn pin b. Dresser c. Shave hook d. Drift plug 40. What is the handy tool for threading the end of the pipe in a trench or in the corner of a cellar where a pipe projects too far and threaded in place? a. Ratchet stocks b. Taps c. Single wheel pipe threader d. Geared pipe threader 40. What is the handy tool for threading the end of the pipe in a trench or in the corner of a cellar where a pipe projects too far and threaded in place? a. Ratchet stocks b. Taps c. Single wheel pipe threader d. Geared pipe threader 41. In the trade of piping, the term “tapping” is used to described ____. a. Drilling of holes through metal b. Cutting of internal threads c. Smoothing of ridges d. Joining of lead pipes 41. In the trade of piping, the term “tapping” is used to described ____. a. Drilling of holes through metal b. Cutting of internal threads c. Smoothing of ridges d. Joining of lead pipes 42. A pipe vise is needed to? a. Keep pipe rigid for cutting b. Straightened a tapered tap in a hole c. Expands the ends of the lead pipe d. Retain melted lead in a joint 42. A pipe vise is needed to? a. Keep pipe rigid for cutting b. Straightened a tapered tap in a hole c. Expands the ends of the lead pipe d. Retain melted lead in a joint 43. In a certain plumbing installation, a lead pipe is being used. How do you usually join the lead pipe? a. Melting the pipe ends b. Threading the pipe ends c. Tapping the pipe ends d. Reaming the pipe ends 43. In a certain plumbing installation, a lead pipe is being used. How do you usually join the lead pipe? a. Melting the pipe ends b. Threading the pipe ends c. Tapping the pipe ends d. Reaming the pipe ends 44. What should be the maximum length of the ladder when fully extended of a an extension ladders? a. 40 feet b. 50 feet c. 60 feet d. 70 feet 44. What should be the maximum length of the ladder when fully extended of a an extension ladders? a. 40 feet b. 50 feet c. 60 feet d. 70 feet 45. What will be the maximum water service pressure at the point where the building distribution system begins? a. 80 psi b. 90 psi c. 100 psi d. 120 psi 45. What will be the maximum water service pressure at the point where the building distribution system begins? a. 80 psi b. 90 psi c. 100 psi d. 120 psi 46. What is usually the primary cause of troubles in excavating operations for water pipes? a. Inadequate drainage b. Underground utilities c. Lack of shoring d. Stagnant water 46. What is usually the primary cause of troubles in excavating operations for water pipes? a. Inadequate drainage b. Underground utilities c. Lack of shoring d. Stagnant water 47. What is the suitable gasket material for a flange union in oil lines? a. Rubber or asbestos sheet b. Rubber or asbestos composition c. Metallic or rubber composition d. Metallic 47. What is the suitable gasket material for a flange union in oil lines? a. Rubber or asbestos sheet b. Rubber or asbestos composition c. Metallic or rubber composition d. Metallic 48. What is the suitable gasket material for flange union in cold water piping? a. Rubber b. Leather c. Metallic d. Asbestos 48. What is the suitable gasket material for flange union in cold water piping? a. Rubber b. Leather c. Metallic d. Asbestos 49. What is the suitable gasket material for flange union in gasoline conduction? a. Rubber or asbestos sheet b. Rubber or asbestos composition c. Metallic or rubber composition d. Metallic 49. What is the suitable gasket material for flange union in gasoline conduction? a. Rubber or asbestos sheet b. Rubber or asbestos composition c. Metallic or rubber composition d. Metallic 50. What is the smallest plumbing fixture used as the basis in determining the fixture unit value? a. Lavatory or wash basin b. Floor drain c. Water closet d. Kitchen sink 50. What is the smallest plumbing fixture used as the basis in determining the fixture unit value? a. Lavatory or wash basin b. Floor drain c. Water closet d. Kitchen sink 51. As an experienced registered master plumber, what will be the ideal size of the P-trap that should be installed underground or embedded on a concrete slab? a. 100 mm b. 150 mm c. 200 mm d. 250 mm 51. As an experienced registered master plumber, what will be the ideal size of the P-trap that should be installed underground or embedded on a concrete slab? a. 100 mm b. 150 mm c. 200 mm d. 250 mm 52. A 100 mm x 3.0 m plastic pipe is used to install in house drainage. The face-to-face distance is 4.40 meters. The engagement length is 45 mm and the solvent cement per joint requires is 16 g. I. Determine the number of pipes. a. 1.47 b. 1.74 c. 1.62 d. 1.15 II. What is the amount of solvent in grams? a. 32 b. 48 c. 64 d. 75 III. If the cost of solvent cement is 80.00 Php per gram, what is the total cost of solvent cement? a. P 2,560.00 b. P 3,840.00 c. P 5,120.00 d. P 6,000.00 52. A 100 mm x 3.0 m plastic pipe is used to install in house drainage. The face-to-face distance is 4.40 meters. The engagement length is 45 mm and the solvent cement per joint requires is 16 g. I. Determine the number of pipes. a. 1.47 b. 1.74 c. 1.62 d. 1.15 II. What is the amount of solvent in grams? a. 32 b. 48 c. 64 d. 75 III. If the cost of solvent cement is 80.00 Php per gram, what is the total cost of solvent cement? a. P 2,560.00 b. P 3,840.00 c. P 5,120.00 d. P 6,000.00 53. What condition must be satisfied for the water supply in building? a. fast removal of the waste with a minimum probability of leakage and stoppage of drain b. fixtures should be vented to avoid siphonage or backflow c. the drainage pipe should be graded properly for downward gravity flow of water towards the discharge point d. Supply sufficient amount of water to each fixture and prevent backflow to avoid contamination 53. What condition must be satisfied for the water supply in building? a. fast removal of the waste with a minimum probability of leakage and stoppage of drain b. fixtures should be vented to avoid siphonage or backflow c. the drainage pipe should be graded properly for downward gravity flow of water towards the discharge point d. Supply sufficient amount of water to each fixture and prevent backflow to avoid contamination 54. Each fixture in the plumbing system represents a certain demand for water, what is the water demand of the wall hydrant? a. 3 gpm b. 5 gpm c. 8 gpm d. 9 gpm 54. Each fixture in the plumbing system represents a certain demand for water, what is the water demand of the wall hydrant? a. 3 gpm b. 5 gpm c. 8 gpm d. 9 gpm 55. Each fixture in the plumbing system represents a certain demand for water, what is the water demand of the bathtub faucet? a. 2 gpm b. 3 gpm c. 4 gpm d. 5 gpm 55. Each fixture in the plumbing system represents a certain demand for water, what is the water demand of the bathtub faucet? a. 2 gpm b. 3 gpm c. 4 gpm d. 5 gpm 56. Each fixture in the plumbing system represents a certain demand for water, what is the water demand of a shower head? a. 1 gpm b. 2 gpm c. 3 gpm d. 4 gpm 56. Each fixture in the plumbing system represents a certain demand for water, what is the water demand of a shower head? a. 1 gpm b. 2 gpm c. 3 gpm d. 4 gpm 57. Each fixture in the plumbing system represents a certain demand for water, what is the water demand of the sink faucet? a. 1 gpm b. 2 gpm c. 3 gpm d. 4 gpm 57. Each fixture in the plumbing system represents a certain demand for water, what is the water demand of the sink faucet? a. 1 gpm b. 2 gpm c. 3 gpm d. 4 gpm 58. Each fixture in the plumbing system represents a certain demand for water, what is the water demand of the drinking fountain? a. 1/2 gpm b. 2/3 gpm c. 3/4 gpm d. 4 gpm 58. Each fixture in the plumbing system represents a certain demand for water, what is the water demand of the drinking fountain? a. 1/2 gpm b. 2/3 gpm c. 3/4 gpm d. 4 gpm 59. What is the name of that piece of pipe less than 12 inches in the length threaded on both sides? a. Short pipe b. Cut pipe c. Pipe d. Nipple 59. What is the name of that piece of pipe less than 12 inches in the length threaded on both sides? a. Short pipe b. Cut pipe c. Pipe d. Nipple 60. What do you call that short pipe whose thread at both ends meet? a. Close nipple b. Short nipple c. Shoulder nipple d. Long nipple 60. What do you call that short pipe whose thread at both ends meet? a. Close nipple b. Short nipple c. Shoulder nipple d. Long nipple 61. What do you call that pipe whose thread at both ends leaves a small amount of space? a. Cut pipe b. Long pipe c. Short pipe d. Stack 61. What do you call that pipe whose thread at both ends leaves a small amount of space? a. Cut pipe b. Long pipe c. Short pipe d. Stack 62. What is the minimum nominal diameter of a water service line pipe which will provide the building with water requirements during peak demands? a. ¼ inch b. ½ inch c. 1/3 inch d. ¾ inch 62. What is the minimum nominal diameter of a water service line pipe which will provide the building with water requirements during peak demands? a. ¼ inch b. ½ inch c. 1/3 inch d. ¾ inch 63. What is the tin content in a brass fitting? a. 5% b. 10% c. 20% d. 25% 63. What is the tin content in a brass fitting? a. 5% b. 10% c. 20% d. 25% 64. What is the zinc content in a brass fitting? a. 25% b. 20% c. 10% d. 5% 64. What is the zinc content in a brass fitting? a. 25% b. 20% c. 10% d. 5% 65. What is the lead content in a brass fitting? a. 5% b. 10% c. 15% d. 20% 65. What is the lead content in a brass fitting? a. 5% b. 10% c. 15% d. 20% 66. What is the copper content in a brass fitting? a. 80% b. 85% c. 90% d. 95% 66. What is the copper content in a brass fitting? a. 80% b. 85% c. 90% d. 95% 67. A 25 mm diameter water pipe can carry water equivalent to how many 12 mm diameter water pipe? a. 3 b. 4 c. 5 d. 6 67. A 25 mm diameter water pipe can carry water equivalent to how many 12 mm diameter water pipe? a. 3 b. 4 c. 5 d. 6 68. The recommended fall per foot for a 4 in pipe and larger due to impractical depth is _____. a. ½ in per foot b. 5/8 in per foot c. ¼ in per foot d. 1/8 in per foot 68. The recommended fall per foot for a 4 in pipe and larger due to impractical depth is _____. a. ½ in per foot b. 5/8 in per foot c. ¼ in per foot d. 1/8 in per foot 69. The recommended fall per foot for a 3 in pipe and larger is _____. a. ½ in per foot b. 5/8 in per foot c. ¼ in per foot d. 1/8 in per foot 69. The recommended fall per foot for a 3 in pipe and larger is _____. a. ½ in per foot b. 5/8 in per foot c. ¼ in per foot d. 1/8 in per foot 70. In roughing-in for lavatory that is to have an 1-½ in drain, the distance between the fixture trap and the vent is not more than_____. a. 10’-0” b. 6’-0” c. 3’-0” d. 5’-0” 70. In roughing-in for lavatory that is to have an 1-½ in drain, the distance between the fixture trap and the vent is not more than_____. a. 10’-0” b. 6’-0” c. 3’-0” d. 5’-0” 71. What is the maximum depth of trench for sub- surface drain tile where the soil is to satisfactory absorption? a. 4’-1” b. 1’-6” c. 2’-1” d. 3’-0” 71. What is the maximum depth of trench for sub- surface drain tile where the soil is to satisfactory absorption? a. 4’-1” b. 1’-6” c. 2’-1” d. 3’-0” 72. Each fixture in the plumbing system represents a certain demand for water. What is the water demand of the water closet tank ballcock? a. 3 gpm b. 2 gpm c. 1 gpm d. 4 gpm 72. Each fixture in the plumbing system represents a certain demand for water. What is the water demand of the water closet tank ballcock? a. 3 gpm b. 2 gpm c. 1 gpm d. 4 gpm 73. Which type of fire line installation has become obsolete and is seldom used? a. Automatic system b. Wet standpipe c. Wet standpipe and Siamese connection d. Dry standpipe 73. Which type of fire line installation has become obsolete and is seldom used? a. Automatic system b. Wet standpipe c. Wet standpipe and Siamese connection d. Dry standpipe 74. Generally, what is the standard diameter of the standpipe for buildings two or three stories in height? a. 4 in. b. 6 in. c. 3 in. d. 2 in. 74. Generally, what is the standard diameter of the standpipe for buildings two or three stories in height? a. 4 in. b. 6 in. c. 3 in. d. 2 in. 75. Generally, what is the standard diameter of the standpipe for buildings more than six stories in height? a. 4 in. b. 6 in. c. 3 in. d. 2 in. 75. Generally, what is the standard diameter of the standpipe for buildings more than six stories in height? a. 4 in. b. 6 in. c. 3 in. d. 2 in. 76. Why is a wet standpipe with Siamese connection considered most practical? a. It is the specification of the fire department. b. There is no need for the fire department pumper to used. c. It is cheaper type of connection. d. It is being served by the domestic water supply under constant pressure. 76. Why is a wet standpipe with Siamese connection considered most practical? a. It is the specification of the fire department. b. There is no need for the fire department pumper to used. c. It is cheaper type of connection. d. It is being served by the domestic water supply under constant pressure. 77. What is the disadvantage of the wet standpipe with Siamese connection? a. The danger of contamination of the building water supply from the unknown source. b. The Siamese connection is expensive. c. The exposed Siamese connection and pipe can be subjected to vandalism. d. The Siamese connection can obstruct the sidewalk. 77. What is the disadvantage of the wet standpipe with Siamese connection? a. The danger of contamination of the building water supply from the unknown source. b. The Siamese connection is expensive. c. The exposed Siamese connection and pipe can be subjected to vandalism. d. The Siamese connection can obstruct the sidewalk. 78. What is the most practical method of repairing or correcting leak of a plastic pipe? a. Cut and insert coupling b. Insert additional bigger pipe c. Cut and provide bushing d. Replace the pipe 78. What is the most practical method of repairing or correcting leak of a plastic pipe? a. Cut and insert coupling b. Insert additional bigger pipe c. Cut and provide bushing d. Replace the pipe 79. Careful installation of the water supply distribution is essential. Which statement differs among the group? a. Sufficient grade and proper alignment b. Short offsets and unnecessary fittings c. Careful installed connections d. Adequate size 79. Careful installation of the water supply distribution is essential. Which statement differs among the group? a. Sufficient grade and proper alignment b. Short offsets and unnecessary fittings c. Careful installed connections d. Adequate size 80. Damage to property leaking points, trapped piping and water hammer in a water system are attributed to ____. a. Poor workmanship b. Poor design c. Poor materials d. Poor planting 80. Damage to property leaking points, trapped piping and water hammer in a water system are attributed to ____. a. Poor workmanship b. Poor design c. Poor materials d. Poor planting 81. In what ways must the water distribution system be suspended from the basement ceiling in large concrete buildings? a. Using lead pipings b. Using wooden plugs c. Using eye log bolts d. Iron inserted on the tough floor sheating and slushed into the concrete slab 81. In what ways must the water distribution system be suspended from the basement ceiling in large concrete buildings? a. Using lead pipings b. Using wooden plugs c. Using eye log bolts d. Iron inserted on the tough floor sheating and slushed into the concrete slab 82. What is that it is not good practice to use a gate valve on a lawn sprinkler? a. It is expensive. b. It is bulky. c. It will fail to close tightly. d. It is hard to operate. 82. What is that it is not good practice to use a gate valve on a lawn sprinkler? a. It is expensive. b. It is bulky. c. It will fail to close tightly. d. It is hard to operate. 83. Why must basement water supply must be properly graded and aligned? a. To pitch the water lines to one low point. b. It is convenient to provide a drum valve to make it possible to drain the entire water system. c. To eliminate the danger of property damage. d. All of the above. 83. Why must basement water supply must be properly graded and aligned? a. To pitch the water lines to one low point. b. It is convenient to provide a drum valve to make it possible to drain the entire water system. c. To eliminate the danger of property damage. d. All of the above. 84. Where should gate valve be used? a. In between the main supply line and pump line. b. After the water meter. c. After the entrance of the street water main. d. At the midpoint between the corporation stop and the curb stop. 84. Where should gate valve be used? a. In between the main supply line and pump line. b. After the water meter. c. After the entrance of the street water main. d. At the midpoint between the corporation stop and the curb stop. 85. What is the recommended distance above the flood level rim of a unit for a vacuum breaker to be installed? a. 6 in. b. 4 in. c. 9 in. d. 12 in. 85. What is the recommended distance above the flood level rim of a unit for a vacuum breaker to be installed? a. 6 in. b. 4 in. c. 9 in. d. 12 in. 86. In what instances that a mechanical drainage will be used? a. The volume of sewage is excessive. b. Pump or ejectors are readily available. c. Building is provided with basements and sub- basements. d. Drainage cannot be affected by gravity. 86. In what instances that a mechanical drainage will be used? a. The volume of sewage is excessive. b. Pump or ejectors are readily available. c. Building is provided with basements and sub- basements. d. Drainage cannot be affected by gravity. 87. What kind of pipe usually used as leaders in tall buildings? a. Wrought iron pipe b. Plastic pipe c. Copper pipe d. Cast iron pipe 87. What kind of pipe usually used as leaders in tall buildings? a. Wrought iron pipe b. Plastic pipe c. Copper pipe d. Cast iron pipe 88. What will be the best kind of pipe for underground drains within the buildings? a. Cement pipe b. G.i pipe c. Copper pipe d. Cast iron pipe 88. What will be the best kind of pipe for underground drains within the buildings? a. Cement pipe b. G.i pipe c. Copper pipe d. Cast iron pipe 89. The drainage system in the building should be designed, constructed and maintained as to guard against fouling, deposits of solids and clogging. What feature should be provided to make maintenance efficient and effective? a. Adequate cleanouts b. Adequate water seal traps c. Adequate vent pipes d. Adequate water supplies 89. The drainage system in the building should be designed, constructed and maintained as to guard against fouling, deposits of solids and clogging. What feature should be provided to make maintenance efficient and effective? a. Adequate cleanouts b. Adequate water seal traps c. Adequate vent pipes d. Adequate water supplies 90. Why is rainwater leaders are often not included as part of the sanitary drainage system? a. Not to overload the sewerage system. b. Rainwater has no cleansing effect. c. Volume of water is unpredictable. d. Excessive rainwater hinders the treatment of the sewage. 90. Why is rainwater leaders are often not included as part of the sanitary drainage system? a. Not to overload the sewerage system. b. Rainwater has no cleansing effect. c. Volume of water is unpredictable. d. Excessive rainwater hinders the treatment of the sewage. 91. Which word does not apply to the plumbing system? a. Smoke tight b. Air tight c. Water tight d. Gas tight 91. Which word does not apply to the plumbing system? a. Smoke tight b. Air tight c. Water tight d. Gas tight 92. If a plumbing plan scaled as 1:10,000, then 10 cm x 20 cm catchment area in the plan is equal to ____ m^3 of rainfall in actual for every hour? Assume 100 mm/hr rain intensity. a. 300,000 m^3 b. 200,000 m^3 c. 400,000 m^3 d. None of the above 92. If a plumbing plan scaled as 1:10,000, then 10 cm x 20 cm catchment area in the plan is equal to ____ m^3 of rainfall in actual for every hour? Assume 100 mm/hr rain intensity. a. 300,000 m^3 b. 200,000 m^3 c. 400,000 m^3 d. None of the above 93. What is the shape for the signage for the signage for women’s comfort room in order to aid visually impaired women readily determine whether a washroom is for men or women? a. Circle b. Rectangle c. Triangle d. Square 93. What is the shape for the signage for the signage for women’s comfort room in order to aid visually impaired women readily determine whether a washroom is for men or women? a. Circle b. Rectangle c. Triangle d. Square 94. A fire sprinkler head has a k-factor of 7.6. what is the flow rate at 15 psi? a. 24.3 b. 29.4 c. 41.3 d. 57.1 94. A fire sprinkler head has a k-factor of 7.6. what is the flow rate at 15 psi? a. 24.3 b. 29.4 (use the formula Q = k * sq.rt. (P)) c. 41.3 d. 57.1 95. All valves controlling the supply of a fire sprinkler system should be: a. Gate b. Labeling c. Indicating d. Insulating 95. All valves controlling the supply of a fire sprinkler system should be: a. Gate b. Labeling c. Indicating d. Insulating 96. Where practical, all pipes from fixtures shall be run in what direction with respect to the nearest wall or building line? a. Perpendicular b. Across c. Offset d. Parallel 96. Where practical, all pipes from fixtures shall be run in what direction with respect to the nearest wall or building line? a. Perpendicular b. Across c. Offset d. Parallel 97. By regulation, the minimum design pressure in distribution system is? a. 20 psi b. 30 psi c. 35 psi d. 40 psi 97. By regulation, the minimum design pressure in distribution system is? a. 20 psi b. 30 psi c. 35 psi d. 40 psi 98. Are there major difference between sewer and septic system in your home? a. They are very similar. b. The only difference is in type of pipe used. c. One uses pressure and other uses gravity. d. None of the above. 98. Are there major difference between sewer and septic system in your home? a. They are very similar. b. The only difference is in type of pipe used. c. One uses pressure and other uses gravity. d. None of the above. 99. Minimum height of Shower head. a. 1.88 m b. 1.78 m c. 1.98 m d. None of the above 99. Minimum height of Shower head. a. 1.88 m b. 1.78 m (RNPCP Sec. 409.4) c. 1.98 m d. None of the above 100. What is the number one reason why pumps cavitate? a. Low pressure b. Air leak in the suction line c. Plugged suction strainer d. Electric motor driving at an RPM that is too low 100. What is the number one reason why pumps cavitate? a. Low pressure b. Air leak in the suction line c. Plugged suction strainer d. Electric motor driving at an RPM that is too low 101. The most common hydraulic fluid is: a. Mineral oil b. Synthetic fluid c. Water d. None of the above 101. The most common hydraulic fluid is: a. Mineral oil b. Synthetic fluid c. Water d. None of the above 102. The relief valve is a normally closed valve. The term “closed” means that is the power off condition the valve is: a. Open to flow b. Closed to flow c. Adjustable d. Non-adjustable 102. The relief valve is a normally closed valve. The term “closed” means that is the power off condition the valve is: a. Open to flow b. Closed to flow c. Adjustable d. Non-adjustable 103. The effective thread length of a 3” diameter of screwed steel pipe is, a. 1 3/8 in b. 1 ½ in c. 1 ¾ in d. 1 5/8 in 103. The effective thread length of a 3” diameter of screwed steel pipe is, a. 1 3/8 in b. 1 ½ in c. 1 ¾ in d. 1 5/8 in 104. This is the term for a decorative metal trim shield or flange located underneath a faucet handle. It covers the hole in the wall or fixture as well as the faucet stem. a. Dove tail b. Escutcheon c. Fluer d. Arm plate 104. This is the term for a decorative metal trim shield or flange located underneath a faucet handle. It covers the hole in the wall or fixture as well as the faucet stem. a. Dove tail b. Escutcheon c. Fluer d. Arm plate 105. Plumbing systems shall be designed and adjusted to use the _____ quantity of water consistent with proper performance. a. Maximum b. Minimum c. Sufficient d. Approved 105. Plumbing systems shall be designed and adjusted to use the _____ quantity of water consistent with proper performance. a. Maximum b. Minimum (Principle No.3) c. Sufficient d. Approved 106. The building supply pipe, the water distributing pipes and all fittings and appurtenances known as _____. a. A potable water system b. A water supply system c. A water distributing system d. A structure water system 106. The building supply pipe, the water distributing pipes and all fittings and appurtenances known as _____. a. A potable water system b. A water supply system c. A water distributing system d. A structure water system 107. In bending plastic pipe, what will be the practical material to be used to prevent fattening of the pipe? a. Soil b. Gravel c. Sand d. Concrete 107. In bending plastic pipe, what will be the practical material to be used to prevent fattening of the pipe? a. Soil b. Gravel c. Sand d. Concrete 108. On what type of building are wet standpipes generally used? a. Tall b. Large c. Medium d. Small 108. On what type of building are wet standpipes generally used? a. Tall b. Large c. Medium d. Small 109. ________ means a water supply valve opened or closed by means of a float or similar device used to supply water to a tank. a. Ballcock b. Float c. Level d. Lift arm 109. ________ means a water supply valve opened or closed by means of a float or similar device used to supply water to a tank. a. Ballcock b. Float c. Level d. Lift arm 110. The vertical DWV main of a system extending through one or more storey is referred to as a ______. a. Soil stack b. VSTR stack c. Stack d. DWV stack 110. The vertical DWV main of a system extending through one or more storey is referred to as a ______. a. Soil stack b. VSTR stack c. Stack d. DWV stack 111. To be called a riser, a vertical water line must extend at least ______. a. 12 inches b. 36 inches c. One full storey or more d. No limit, there is no height requirement 111. To be called a riser, a vertical water line must extend at least ______. a. 12 inches b. 36 inches c. One full storey or more d. No limit, there is no height requirement 112. Assume an ice is floating on a glass of water. If the ice cube melts, what happens to the level of water? a. Rise b. Go down c. Remains the same d. None of the above 112. Assume an ice is floating on a glass of water. If the ice cube melts, what happens to the level of water? a. Rise b. Go down c. Remains the same d. None of the above 113. What seals the trap that prevents sewer gases entering the household drains? a. Water pressure b. Air admitted by vent stacks and vent pipes c. Aerator d. None of the above 113. What seals the trap that prevents sewer gases entering the household drains? a. Water pressure b. Air admitted by vent stacks and vent pipes c. Aerator d. None of the above 114. When comparing leasing against outright purchase of equipment, which of the following is not correct? a. Leasing frees needed working capital b. Leasing reduces maintenance and administrative expenses c. Leasing offer less flexibility with respect to technical obsolescence d. Leasing offers certain tax advantages 114. When comparing leasing against outright purchase of equipment, which of the following is not correct? a. Leasing frees needed working capital b. Leasing reduces maintenance and administrative expenses c. Leasing offer less flexibility with respect to technical obsolescence d. Leasing offers certain tax advantages 115. What is the maximum amount of time that gray water is allowed to be retained for use to flush a toilet or urinal? a. 12 h b. 24 h c. 48 h d. 72 h 115. What is the maximum amount of time that gray water is allowed to be retained for use to flush a toilet or urinal? a. 12 h b. 24 h c. 48 h d. 72 h 116. Color coding of a potable water. a. Green background with white letters b. Blue background with white letters c. Yellow background with black uppercase letters d. Yellow background with white lowercase letters 116. Color coding of a potable water. a. Green background with white letters b. Blue background with white letters c. Yellow background with black uppercase letters d. Yellow background with white lowercase letters 117. Color coding of a non-potable water. a. Green background with white letters b. Blue background with white letters c. Yellow background with black uppercase letters d. Yellow background with white lowercase letters 117. Color coding of a non-potable water. a. Green background with white letters b. Blue background with white letters c. Yellow background with black uppercase letters d. Yellow background with white lowercase letters 118. In a potable water supply to a beverage dispensers, carbonated beverage dispensers or coffee machines shall be protected by an airgap and? a. Backflow valve b. Backwater valve c. A vented backflow preventer d. A vented siphonage pipe 118. In a potable water supply to a beverage dispensers, carbonated beverage dispensers or coffee machines shall be protected by an airgap and? a. Backflow valve b. Backwater valve c. A vented backflow preventer d. A vented siphonage pipe 119. In a potable water connections to steam or hot water boilers shall be protected by a? a. Double check valve pressure prevention assembly b. Double check valve backflow prevention assembly c. Reduced pressure principle prevention assembly d. Reduced check valve pressure prevention assembly 119. In a potable water connections to steam or hot water boilers shall be protected by a? a. Double check valve pressure prevention assembly b. Double check valve backflow prevention assembly c. Reduced pressure principle prevention assembly d. Reduced check valve pressure prevention assembly 120. In a potable water connections to steam or hot water boilers shall be protected by a? a. Double check valve pressure prevention assembly b. Double check valve siphonage prevention assembly c. Reduced pressure principle backflow prevention assembly d. Reduced check valve pressure prevention assembly 120. In a potable water connections to steam or hot water boilers shall be protected by a? a. Double check valve pressure prevention assembly b. Double check valve siphonage prevention assembly c. Reduced pressure principle backflow prevention assembly d. Reduced check valve pressure prevention assembly 121. A water-chlorine solution for disinfection of potable water system. a. 500 ppm for 24 h b. 500 ppm for 12 h c. 200 ppm for 2 h d. 200 ppm for 1 h 121. A water-chlorine solution for disinfection of potable water system. a. 500 ppm for 24 h b. 500 ppm for 12 h c. 200 ppm for 2 h d. 200 ppm for 1 h 122. A water-chlorine solution for disinfection of potable water system. a. 500 ppm for 48 h b. 500 ppm for 72 h c. 200 ppm for 3 h d. 200 ppm for 2 h 122. A water-chlorine solution for disinfection of potable water system. a. 500 ppm for 48 h b. 500 ppm for 72 h c. 200 ppm for 3 h d. 200 ppm for 2 h 123. The effective thread length of a ¾ in diameter screwed pipe is, a. 1 ¼ in long b. ½ in long c. 1 in long d. ¾ in long 123. The effective thread length of a ¾ in diameter screwed pipe is, a. 1 ¼ in long b. ½ in long c. 1 in long d. ¾ in long 124. Screwed steel pipes 2 1/2 inches diameter should have this number of threads for effective jointing, a. 8 b. 13 c. 10 d. 12 124. Screwed steel pipes 2 1/2 inches diameter should have this number of threads for effective jointing, a. 8 b. 13 c. 10 d. 12 125. When installing glass piping; if one end needs to be field cut, the ends should be joined: a. plain to plain b. bead to bead c. bead to plain d. bead to hub b. bead to bead c. bead to plain 125. When installing glass piping; if one end needs to be field cut, the ends should be joined: a. plain to plain b. bead to bead c. bead to plain d. bead to hub bead to bead c. 126. How is ABS pipe cut? a. At an angle to maintain proper grade. b. Flush so that pipe will fit into the socket. c. Square to provide full joining surface. d. Flush to ensure proper pipe alignment. 126. How is ABS pipe cut? a. At an angle to maintain proper grade. b. Flush so that pipe will fit into the socket. c. Square to provide full joining surface. d. Flush to ensure proper pipe alignment. 127. What is the length of pipe to be removed when cutting out a section of an existing cast iron building drain to insert an MJ wye? a. Same as the wye. b. 1/4 to 1/2 in. longer than the wye. c. 1/2 to 1 in. longer than the wye. d. 1/4 to 1/2 in. shorter than the wye. 127. What is the length of pipe to be removed when cutting out a section of an existing cast iron building drain to insert an MJ wye? a. Same as the wye. b. 1/4 to 1/2 in. longer than the wye. c. 1/2 to 1 in. longer than the wye. d. 1/4 to 1/2 in. shorter than the wye. 128. What is the principal function of the expansion tank in a hot water system? a. It allows the volume of the water in the system to change to maintain working pressure. b. It collects the air in the system, thus preventing air lock of the system while in operation. c. It provides the necessary space for the air required in the system. d. It acts as a safety chamber in case of over firing of the boiler. 128. What is the principal function of the expansion tank in a hot water system? a. It allows the volume of the water in the system to change to maintain working pressure. b. It collects the air in the system, thus preventing air lock of the system while in operation. c. It provides the necessary space for the air required in the system. d. It acts as a safety chamber in case of over firing of the boiler. 129. The melting together of filler material and base material or of base material only which results in coalescence. a. Genue forces b. Fission c. Fusion d. Annealed 129. The melting together of filler material and base material or of base material only which results in coalescence. a. Genue forces b. Fission c. Fusion d. Annealed 130. Wherein coalescence is produced by heating with a gas flame or flames, with or without the application of pressure, and with or without the use of filler material. a. Water welding b. Air welding c. Gas welding d. Torch welding 130. Wherein coalescence is produced by heating with a gas flame or flames, with or without the application of pressure, and with or without the use of filler material. a. Water welding b. Air welding c. Gas welding d. Torch welding 131. A pressure tight cylinder used to convey a fluid or to transmit a fluid pressure. a. Tube b. Pipe c. Vessels d. Conduit 131. A pressure tight cylinder used to convey a fluid or to transmit a fluid pressure. a. Tube b. Pipe c. Vessels d. Conduit 132. It is a pipe produced by piercing a billet followed by rolling, drawing or both. a. Reamed pipe b. Burred pipes c. Seamless pipes d. Plastic pipes 132. It is a pipe produced by piercing a billet followed by rolling, drawing or both. a. Reamed pipe b. Burred pipes c. Seamless pipes d. Plastic pipes 133. It is a plastic which is capable of being repeatedly softened by increase of temperature and hardened by decrease of temperature. a. Thermoplastic b. Copper pipes c. Wood pipes d. None of the above 133. It is a plastic which is capable of being repeatedly softened by increase of temperature and hardened by decrease of temperature. a. Thermoplastic b. Copper pipes c. Wood pipes d. None of the above 134. A metallic flanged is bolted to a nonmetallic flange where full faced gasket is preferred. a. Flat faced flange b. Blind flange c. Blank flange d. Bolted flange 134. A metallic flanged is bolted to a nonmetallic flange where full faced gasket is preferred. a. Flat faced flange b. Blind flange c. Blank flange d. Bolted flange 135. Fluid service requirements for nonmetallic piping components not be used: a. Threaded nonmetallic flange and joints b. Caulked joints c. Expanded joints d. All of the above 135. Fluid service requirements for nonmetallic piping components not be used: a. Threaded nonmetallic flange and joints b. Caulked joints c. Expanded joints d. All of the above 136. A swiveling serrated jaw and knurled control knob located between the frame forming the head and the handled of the wrench. a. Pipe wrench b. Stillson wrench c. Rap wrench d. End pipe wrench 136. A swiveling serrated jaw and knurled control knob located between the frame forming the head and the handled of the wrench. a. Pipe wrench b. Stillson wrench c. Rap wrench d. End pipe wrench 137. A unique type of pipe wrench in which turning force applied is multiplied. The principle of lever action in a simple machine had been applied in this type of patented plumbing tools. a. End pipe wrench b. Leverage pipe wrench c. Compound leverage wrench d. Stillson wrench 137. A unique type of pipe wrench in which turning force applied is multiplied. The principle of lever action in a simple machine had been applied in this type of patented plumbing tools. a. End pipe wrench b. Leverage pipe wrench c. Compound leverage wrench d. Stillson wrench 138. It is an individual or company responsible for the performance of the construction work. a. Superintendent b. Contractor c. Apprentice d. Journeymen 138. It is an individual or company responsible for the performance of the construction work. a. Superintendent b. Contractor c. Apprentice d. Journeymen 139. It is a scaled view that shows the shape and size of the exterior walls and the roof of the building. a. Section drawing b. Detail drawing c. Plot plan d. Exterior elevation drawing 139. It is a scaled view that shows the shape and size of the exterior walls and the roof of the building. a. Section drawing b. Detail drawing c. Plot plan d. Exterior elevation drawing 140. What is the minimum size of water supply inlet for shower stall? a. ¾ in. b. ½ in. c. 1 in d. 3/8 in 140. What is the minimum size of water supply inlet for shower stall? a. ¾ in. b. ½ in. c. 1 in d. 3/8 in 141. What is the minimum size of water supply inlet for bidet? a. ¾ in. b. ½ in. c. 1 in d. 3/8 in 141. What is the minimum size of water supply inlet for bidet? a. ¾ in. b. ½ in. c. 1 in d. 3/8 in 142. What is the minimum size of water supply inlet for combination sink and tray? a. ¾ in. b. ½ in. c. 1 in d. 3/8 in 142. What is the minimum size of water supply inlet for combination sink and tray? a. ¾ in. b. ½ in. c. 1 in d. 3/8 in 143. What is the minimum size of water supply inlet for dental unit or cupsidor? a. ¾ in. b. ½ in. c. 1 in d. 3/8 in 143. What is the minimum size of water supply inlet for dental unit or cupsidor? a. ¾ in. b. ½ in. c. 1 in d. 3/8 in 144. What is the minimum size of water supply inlet for drinking fountain? a. ¾ in. b. ½ in. c. 1 in d. 3/8 in 144. What is the minimum size of water supply inlet for drinking fountain? a. ¾ in. b. ½ in. c. 1 in d. 3/8 in 145. What is the minimum size of water supply inlet for lavatory? a. ¾ in. b. ½ in. c. 1 in d. 3/8 in 145. What is the minimum size of water supply inlet for lavatory? a. ¾ in. b. ½ in. c. 1 in d. 3/8 in 146. What is the minimum size of water supply inlet for urinal (pedestal)? a. ¾ in. b. ½ in. c. 1 in d. 3/8 in 146. What is the minimum size of water supply inlet for urinal (pedestal)? a. ¾ in. b. ½ in. c. 1 in d. 3/8 in 147. What is the minimum size of water supply inlet for urinal (stall)? a. ¾ in. b. ½ in. c. 1 in d. 3/8 in 147. What is the minimum size of water supply inlet for urinal (stall)? a. ¾ in. b. ½ in. c. 1 in d. 3/8 in 148. What is the minimum size of water supply inlet for lavatory (circular or multiple)? a. ¾ in. b. ½ in. c. 1 in d. 3/8 in 148. What is the minimum size of water supply inlet for lavatory (circular or multiple)? a. ¾ in. b. ½ in. c. 1 in d. 3/8 in 149. What is the minimum size of water supply inlet for flushometer tank? a. ¾ in. b. ½ in. c. 1 in d. 3/8 in 149. What is the minimum size of water supply inlet for flushometer tank? a. ¾ in. b. ½ in. c. 1 in d. 3/8 in 150. What is the minimum size of water supply inlet for flush tank? a. ¾ in. b. ½ in. c. 1 in d. 3/8 in 150. What is the minimum size of water supply inlet for flush tank? a. ¾ in. b. ½ in. c. 1 in d. 3/8 in 151. The effective thread length of a 3” diameter screwed steel pipe is, a. 1 3/8” b. 1 ½” c. 1 ¾” d. 1 5/8” 151. The effective thread length of a 3” diameter screwed steel pipe is, a. 1 3/8” b. 1 ½” c. 1 ¾” d. 1 5/8” 152. The effective thread length of a 1/4” diameter screwed steel pipe is, a. 3/4” b. 1 ½” c. 1” d. 5/8” 152. The effective thread length of a 1/4” diameter screwed steel pipe is, a. 3/4” b. 1 ½” c. 1” d. 5/8” 153. The effective thread length of a 1” diameter screwed steel pipe is, a. 5/8” b. 7/8” c. 1” d. 1 1/2” 153. The effective thread length of a 1” diameter screwed steel pipe is, a. 5/8” b. 7/8” c. 1” d. 1 1/2” 154. The effective thread length of a 2 1/2” diameter screwed steel pipe is, a. 5/8” b. 7/8” c. 1” d. 1 1/2” 154. The effective thread length of a 2 1/2” diameter screwed steel pipe is, a. 5/8” b. 7/8” c. 1” d. 1 1/2” 155. The effective thread length of a 8” diameter screwed steel pipe is, a. 1 5/8” b. 1 7/8” c. 2” d. 2 1/2” 155. The effective thread length of a 8” diameter screwed steel pipe is, a. 1 5/8” b. 1 7/8” c. 2” d. 2 1/2” 156. The effective thread length of a 10” diameter screwed steel pipe is, a. 1 3/8” b. 2 ½” c. 2 ¾” d. 2” 156. The effective thread length of a 10” diameter screwed steel pipe is, a. 1 3/8” b. 2 ½” c. 2 ¾” d. 2” 157. The effective thread length of a 12” diameter screwed steel pipe is, a. 1 3/8” b. 2 1/8” c. 1 ¾” d. 2” 157. The effective thread length of a 12” diameter screwed steel pipe is, a. 1 3/8” b. 2 1/8” c. 1 ¾” d. 2” 158. The effective no. of thread of a 1/8” diameter screwed steel pipe is, a. 27 b. 18 c. 14 d. 11.5 158. The effective no. of thread of a 1/8” diameter screwed steel pipe is, a. 27 b. 18 c. 14 d. 11.5 159. The effective no. of thread of a 1/4” diameter screwed steel pipe is, a. 27 b. 18 c. 14 d. 11.5 159. The effective no. of thread of a 1/4” diameter screwed steel pipe is, a. 27 b. 18 c. 14 d. 11.5 160. The effective no. of thread of a 1/2” diameter screwed steel pipe is, a. 27 b. 18 c. 14 d. 11.5 160. The effective no. of thread of a 1/2” diameter screwed steel pipe is, a. 27 b. 18 c. 14 d. 11.5 161. The effective no. of thread of a 1” diameter screwed steel pipe is, a. 27 b. 18 c. 14 d. 11.5 161. The effective no. of thread of a 1” diameter screwed steel pipe is, a. 27 b. 18 c. 14 d. 11.5 162. The effective no. thread of a 2 1/2” diameter screwed steel pipe is, a. 18 b. 14 c. 11.5 d. 8 162. The effective no. thread of a 2 1/2” diameter screwed steel pipe is, a. 18 b. 14 c. 11.5 d. 8 163. A heavy sprocket chain that is slipped around a pipe, then attached to wrench handled and used on piping work especially large size pipe metal pipes and in areas that is not easily accessible. a. Chain wrench b. Compound chain wrench c. Offset chain wrench d. Adjustable spud wrench 163. A heavy sprocket chain that is slipped around a pipe, then attached to wrench handled and used on piping work especially large size pipe metal pipes and in areas that is not easily accessible. a. Chain wrench b. Compound chain wrench c. Offset chain wrench d. Adjustable spud wrench 164. A wrench with hexagonal jaw which is multisided, used to provide secure grip on all hexagonal nuts, square nuts, unions and valve packing nuts. a. Internal wrench b. Compound leverage wrench c. Offset pipe wrench d. Hex wrench 164. A wrench with hexagonal jaw which is multisided, used to provide secure grip on all hexagonal nuts, square nuts, unions and valve packing nuts. a. Internal wrench b. Compound leverage wrench c. Offset pipe wrench d. Hex wrench 165. A tool used to tighten the nut that secure the basket to the sink. a. Basket strainer wrench b. Closet wrench c. Valve seat tool d. Closet wrench 165. A tool used to tighten the nut that secure the basket to the sink. a. Basket strainer wrench b. Closet wrench c. Valve seat tool d. Closet wrench