WorksheetsMP F1 SP4
Total questions: 101
Worksheet time: 51mins
Acidity is one of the most problems in water distribution and water purification, which can cause Corrosion of non-ferrous pipes and Rusting & clogging of steel pipes, which is the best solution for this problem?
Passing the water through a bed of crushed marble or limestone to achieve alkalinity, or adding sodium silicate
Chlorination for removing salt contents
Aeration
None of the above
Amount of waste discharged for a waste water treatment facility.
300 gpm
500 gpm
30 cu.m./day
50 c.u. m. /day
One end is 0.30M and the other end is 0.90M long. This prevents the pipe from snapping (breaking?) when the soil settles. [U-shaped?]
Gooseneck
Corporation cock
Ball cock
Long neck
Physical process in which the sediment particles collide with each other and stick together.
Coagulation
Flocculation
Sedimentation
Aeration
The discharge from a sump pump shall have the following fittings installed in order, in the direction of flow:
check valve, union, shut-off valve
shut-off, coupling, check valve
check valve, shut-off valve, union
union, check valve, shut-off valve
What do you mean by 'zero Ph'?
Acid
Base
Alkaline
neutral
Copper tube permitted for underground water distribution.
type M soft
type L hard
type K soft
DWV
What is a 'powder room'?
half bath
full bath
quarter bath
none of the above
There are several reasons why soil stacks are not allowed in columns. Which is NOT the reason?
Pipes will interfere with reinforcing Bars
The size of the columns will be larger
Cracks and leaks cannot be detected
The Gas emitted will deteriorate concrete
The tailpiece for a lavatory shall not be less than.
1-1/4 inch
1-1/2 inch
1 inch
1-3/8 inch
What feature in water supply is NOT advisable to plumbing fixtures, devices and opportunities?
Bacterial quality
Adequate pressure
Sufficient volume
Without undue noise
Which of the following is an impairment of the quality of potable water which creates a hazard to public health through poisoning or the spread of disease?
Imbalance
Risk danger
Backflow
Contamination
Globe valve for steam and hot water?
Composition
Wedge plug
Angle valve
Conventional
What delivers water under pressure?
Ejector
Sump pump
Pressure controller
Centrifugal pump
Who was the President of the Republic of the Philippines who signed the 'Plumbing Law of the Philippines'?
Joseph Estrada
Diosdado Macapagal
Ramon Magsaysay
Ferdinand Marcos
A method of purifying water wherein particles of matters that are suspended in the water are allowed to stay in a container so that they will settle in the bottom, then drawing the water out, leaving these matters in the container.
aeration
sedimentation
reverse osmosis
purification
The pipe or shaft which is used to remove foul air or congested air from a fixture or a room and convey the same to the atmosphere is called?
Local vent
Back vent
Venting pipe
Dry vent
Which does NOT apply in the removal of suspended materials and color in the water?
Sedimentation
Coagulation
Filtration
Chlorination
What do you call the undesirable type of vegetation formed when water reservoir is exposed to light?
Septic scum
Sludge
Pond scum
Floe
The top of the well is lower that the high position of the previous stratum from which the water is obtained and water will rise through the entire length of the well and way flow from the wall without pumping.
Flowing well
Shallow well
Deep well
Artesian well
What is the size of the yoke or by past vent for a high rise building?
Equal size of the main vent
½ times the size of the main vent
1 1/2 times the size of the main vent
Equal size of the vent stack
What is the size of relief vent on a circuit vented soil branch installation of plumbing fixtures?
Equal diameter of the soil pipe
½ times the diameter of the soil pipe
1 ½ times the diameter of the soil pipe
¾ times the diameter of the soil pipe
What should be the front clearance of a cleanout having 2 inches diameter or less shall not be less than?
102 mm
152 mm
305 mm
200 mm
What is the minimum horizontal distance required between vent terminal and window opening of a building?
1.5 m
3.0 m
1 m
1.2 m
What should be the front clearance of a cleanout having 2 inches diameter or larger shall not be less than?
450 mm
152 mm
305 mm
200 mm
To reduce the excessive pressure that produces a hammering sound, how long a pipe should be added and installed on the top of riser of the highest fixture level to absorb air pressure.
0.60m – 0.90m
0.30m – 0.90m
0.50m – 1.2m
0.40m – 1.0m
Which method that is NOT commonly used for bringing water from its source to the costumer?
Gravity system
Distributing reservoir system
Domestic water softener system
Direct pressure system
The soil branch piping installed in horizontal run must be supported by iron hanger at close interval to prevent sagging. What is the distance apart the hangers?
1.5 m
3.0 m
2.3 m
0.9 m
What is the chief factor in clarification of still water since particles of solid materials will settle more readily in still than flowing water?
Infiltration
Sedimentation
Dilution
Aeration
How far should a septic tank be constructed away from the water supply source to prevent contamination?
20.3 m
10.5 m
13 m
15.2 m
Saddle clamp is a pipe fitting which is NOT use when water service is to be interconnected to the type of water main.
Centrifugal cast iron pipe
Asbestos cement pipe
Galvanized iron pipe
PVC pipe
What is water that diminishes the capacity of water to form lather with soap?
Bacteria
Suspended materials
Mineral that makes water hard
Presence of sodium ions
What water storage that was NOT used during primitive period?
Earthen jars
Wooden jars
Bamboo container
Glass container
What is that appurtenant structure installed at the basement floor of a building which waste water are drained?
Sump pit
Septic tank
Catch basin
Floor drain
Which sources of water supply that was NOT used in the older days?
Rain
Spring and wells
Creeks and rivers
Centralized treatment of reservoir
The non-soluble materials which is the end product after biological action of bacteria in waste and that settles at the bottom of the septic tank is called:
Scum
Sludge
Floe
Alum
The pipe that is remarkable for hot water lure installation:
Copper pipes
Brass pipes
Stainless pipes
Synthetic pipes
Corrosion in pipe, what is the by-product of chemical reaction of oxidation in forming ferrous oxide or rust is covered by the action of:
Carbon dioxide
Sulfur oxide
Methane gas
All of the above
It is the sink used as a rule for janitorial services in a building is called:
Pantry sink
Scullery sink
Wash-up sink
Slop sink
Determine the water nature through acidity or alkalinity is:
Ph value
Ph meter
Base
Acid
An instrument used to measure the water flow:
Venturi meter
Pressure gauge
Dynamometer
Pitot tube
A type of valve which should be used only wide open or fully closed:
Gate valve
Globe valve
Reducing valve
Throttle valve
It includes the urea, proteins and amino acids is:
Non-nitrogenous compound
Nitrogenous compound
Adour
All of the above
The unit of kinematics in metric system:
Poise
ft2 / s
m2 / s
Pa-s
The unit of dynamics in metric system:
Pa-s
cm2 / s
m2 / s
sq.poise-s
Means by which infectious agents are transported in causing disease. Water, food, insect and inanimate object may be vehicles of infection, insects or rodents are sometimes:
Vehicle of inspection
Host
Vector
Person to person
The retention period or the time for which suspended matters in septic tank would settle and stabilize is:
24 hours
12 hours
18 hours
30 hours
The physical characteristics of sewage is determined by:
Turbidity
Color
Odor
All of the above
A state of complete physical, mental and social well being and not merely the absence of disease or infirmity:
Health
Vital statistics
Fitness
Psychological
A positive displacement pump is:
Rotary pump
Centrifugal pump
Turbine pump
Piston pump
It includes the discharge from latrine, urinals, bathroom, kitchen and stables is called:
Refuse
Wet refuse
Sewage
Waste water
What is the most important reason for backfilling a trench after pipe installation?
Eliminate an eye sore
Eliminate a safety hazard if left open
Restore the natural appearances of the ground surface
Protect the pipe from the movement and breakage due to backfill load
What wall thicknesses are available in copper tubing for drinking water?
A,B,C,D
N,O,P,DWV
K,L,M, DWV
Schedule 40 & 80
Galvanization provides a pipe with what benefit?
Reduces corrosion
Makes the pipe easier to bend
Increase pipe thickness
Increase pipe strength
What fitting joins pipes so they can be taken apart later?
Union
Nipple
Adapter
Coupling
How do street elbows and standard elbows differ?
Standard elbows have male threads
Street elbows have recessed threads
Standard elbows have tapered threads
Street elbows have one female and one male end
How do copper pressure fittings differ from copper drain, waste, and vent (DWV) fittings?
DWV fittings are threaded
Pressure fittings are threaded
DWV fittings have a short radius sweep
Pressure fittings have a deeper solder pocket
What is the smallest increment on most of the tape measures in our trade?
Sixty-fourth inch
Thirty-second inch
Sixteenth inch
Eighth inch
What is the next largest sixteenth-inch mark after ¾?
15/16ths
13/16ths
10/16ths
9/16ths
What kind of tape measurer can you use to determine the travel when the offset angle is known to be 45 degrees?
Angle rule
Travel rule
Standard rule
Plumber’s rule
How do you determine the center of a fitting?
By reading the branch, then the run
By determining the angle of the branch
By dividing the length of the fitting by 2
By finding where lines drawn through the fitting intersect
An end-to-center measurement is made from the?
Middle of the pipe to end of fitting
End of pipe to center of fitting
Center of pipe to end of fitting
End of face to center of back
When cutting tubing with a tubing cutter, how far do you turn the handle after each revolution?
1/8 turn
¼ turn
½ turn
1 full turn
To remove the burr from inside a piece of pipe, operate the handle of the reamer with?
Short, even, counterclockwise strokes
Long, even, counterclockwise strokes
Long, even, clockwise strokes
Short, even, clockwise strokes
What diameter steel pipe sizes are able to thread with a nonadjustable ratchet style hand threader?
1/8 - 2 inches
1/8 - 4 inches
½ - 2 ½ inches
½ - 3 inches
When threading steel pipe with a hand threader, how often do you apply oil to the pipe dies?
When the dies squeak
Before and after cutting threads
Every two or three downward stokes of the die handle
Once, at the halfway point of the threading operation
What is the purpose of oiling while threading the steel pipe?
Allows the pipe dies to turn freely inside the die holder
Prevents the dies and threads from overheating and becoming damaged
The oil maintains a thin protective coating on the pipe and prevents flying debris from injuring the user
The oil maintains a thin protective coating on the pipe and prevents flying debris from injuring the user
When threading a fitting on a pipe, what happens if you overtighten a fitting?
Leaks will be stopped completely.
The wrench you are using might break.
Overall pipe length decreases by 1 inch.
The fitting stretches and the joint leaks.
What size pipe wrench do you use on a ¼ inch pipe?
4 inch (100 mm)
8 inch (200 mm)
10 inch (250 mm)
12 inch (300 mm)
What preparation must you make to produce a good bond between the base metal and the solder in a copper soldered joint?
The solder must be lead free.
The pipe must be reamed and cut.
The solder must 95/5 solder.
The metal surfaces must be perfectly clean at the joint.
How much solder is needed to solder a ½ inch connection?
½ inch
¾ inch
7/8 inch
1 inch
When using a lever type tubing bender, you can make angles up to how many degrees?
45 degrees
90 degrees
120 degrees
180 degrees
What action creates a watertight and airtight seal on a ferruled joint?
Tighten the nut which crimps the ferrule into the tubing and against the fitting.
The capillary action between the components
Squeezing the ferrule into the nut
The compression of the tapered threads.
What is one disadvantage of the no-hub drainage system?
No-hub have a tendency to leak.
More tools are required to make this type of joint.
Support around the pipe may be required.
The pipe ends must be reinforced to ensured they do not crush under pressure.
When solvent welding plastic pipe, how do you insert the pipe into the fitting?
Put the pipe halfway into the fitting to allow for expansion and contraction.
Quickly insert the pipe into the fitting with a onequarter turning motion.
Insert the pipe into the fitting and give the pipe a full turn.
Thread the pipe into the fitting until no threads show.
How is large underground plastic pipe joined?
Solvent welding
O-ring joints
Tig welding
Threading
What are two types of pumps used in booster stations?
Deep well and split case
Booster and clear well
Split case and booster
Recirculating and clear well
What is the reason we use elevated storage tanks in water systems?
Because of emergency water requirements
Elevated storage tanks provide cheap pressure
Ground tanks are for firefighting purposes only
Elevated tanks last longer than ground storage tanks.
What element of a water meter translates the action of the water flow?
Primary
Secondary
Tertiary
Head area
What is the minimum burial depth for water mains under roads?
2 feet (0.6 m)
3 feet (0.9 m)
4 feet (1.2 m)
5 feet (1.5 m)
What is the part of the water distribution system main and extends into the building?
Water mains
Distribution mains
Water service lines
Lateral water mains
Before a new water main is put into service it must be?
Cured and tested
Tested and leveled
Leveled and disinfected
Tested and disinfected
A kind of cleanout plugs that will be installed in case where raised heads may cause hazards to passing personnel or vehicles.
Countersunk
Recessed
Embedded
Depressed
If the water level in a fire hydrant barrel rises after the hydrant is shut off, then?
The weep hole is plugged.
The main valve is leaking.
There is a loose packing gland.
There is too much residual pressure.
What is the normal operating pressure of a water distribution system?
5 to 10 psi
10 to 20 psi
40 to 75 psi
100 to 200 psi
Which instrument is used to measure velocity flow from a fire hydrant?
Pitot tube
Vacuum gauge
Pressure gauge
Hydrant gauge assembly
After you have taken all the hydrant readings, you should shut down the hydrants slowly to?
Decrease flushing time
Prevent surges in pressure
Increase flushing time
Increase the pressure throughout the system
One of the factors to consider when sizing the supply for a building is type of?
Fixture style
Flush devices
Service mains
Supply piping
To solder copper joints in a water distribution piping, you must not use solder containing?
Less than 0.2 percent lead
More than 0.2 percent lead
Less than 0.2 percent antimony
More than 0.2 percent antimony
How are the building water distribution branch lines normally installed?
Horizontally, with a slight grade toward the shutoff valve
Horizontally, with a slight grade toward the point of use
Vertically, with a slight grade toward the shutoff valve
Vertically, with a slight grade toward the point of use.
What device do you install in a building distribution system to correct a water hammer problem?
Vertical air chamber
Horizontal air chamber
Vertical expansion fitting
Horizontal expansion fitting
The first step in the rough-in of fixtures is to locate the?
Main stack opening
Vertical trap position
Sewer and water line locations
Exact position of the opening for each fixture
Where on the studs should you cut holes for water supply lines?
Top
Bottom
Center
Corner
To reinforce a structural beam that has been undercut?
Wedge a block in the notch and nail it in place
Toenail four nails at angles to hold the pipe securely in place
Cover the opening with a half-inch wooden strip and nail it in place
Place a strap iron brace across the notch and fasten it with lag screws
When hanging steel pipe, place hangers no further apart than?
4 feet (1.2 m)
6 feet (1.8 m)
10 feet (3.0 m)
12 feet (3.6 m)
How many feet apart should 1 ½ inch diameter horizontal copper tubing be supported?
4 feet (1.2 m)
6 feet (1.8 m)
8 feet (2.4 m)
10 feet (3.0 m)
Lead pipe and tubing must be supported vertically every?
4 feet (1.2 m)
6 feet (1.8 m)
8 feet (2.4 m)
10 feet (3.0 m)
The primary purpose of periodic testing of water mains of flow and pressure is to ensure that?
Sufficient water is available for fire fighting.
The water system can meet the public demands far water
Firefighters know how much water a hydrant can produce in inches of mercury
Firefighters know how many psi the system can usually provide
Who must be notified anytime a water main is turned off?
Base operation
Command post
Service call desk
Fire department
How many times are pipes in the water systems tested?
Once, after the fixtures are installed.
Once, after rough-in is completed.
Twice, after rough-in and after fixtures are installed.
Twice, after the fixtures are installed and after the appliances are connected.
How much air pressure should you use for testing piping for leaks?
20 psi
30 psi
40 psi
50 psi
