#21.
Continuous waste fixture tailpiece connections
were exposed or accessible may be of seamless
drawn brass not less than Ga. 20 B & S or ___
mm thick
A
0.70
B
0.90
C
0.50
D
0.80
Answer: 0.80
#22.
All porcelain enamel surfaces on
plumbing fixtures shall be ____
A
Mold resistant
B
Acid resistant
C
Corrosion resistant
D
Water resistant
Answer: Acid resistant
#23.
All pipe determinations shall be based on
_______ percent the reduced pressure.
A
50%
B
100%
C
90%
D
80%
Answer: 80%
#24.
Shall be supported at least every other point
except that when the developed length between
supports exceeds 1.2 m, that shall be provided at
each joint.
A
None from the choices
B
Couplings and compression joints
C
Caps and plugs
D
Hubless or compression gasket joints
Answer: Hubless or compression gasket joints
#25.
Shall be supported by stiff metal or wood
backing with hangers in its entire length for small
size tubings up to 38 mm dia. & without backings
but with spaced metal hangers at approved
spacing for larger-size tubing.
A
Steel tube
B
Plastic tube
C
Concrete tube
D
Aluminum tube
Answer: Plastic tube
#26.
What is the maximum length of supply piping?
A
61
B
62
C
63
D
64
Answer: 61
#27.
Drainage pipes shall be run in practical
alignments and at a uniform slope between
manholes of not less than ___ toward the point of
disposal.
A
10 mm / m or 1%
B
20 mm / m or 2%
C
30 mm / m or 3%
D
40 mm / m or 4%
Answer: 20 mm / m or 2%
#28.
An instrument used to measure the water flow.
A
Pitot tube
B
Pressure gauge
C
Dynamometer
D
Venture meter
Answer: Venture meter
#29.
What is the temperature in \(^oC\) of 2 liters of water
at \(30^oC\) after 500 calories of heat have been
added?
A
\(280^oC\)
B
\(280^oR\)
C
\(280^oF\)
D
\(280^oK\)
Answer: \(280^oK\)
#30.
The volume of a liquid passing through a cross
section of a stream in unit time.
A
Steady Flow
B
Liquid flow
C
discharge
D
flow
Answer: discharge
#31.
It determines the water nature through acidity or
alkalinity.
A
Acidity test
B
pH meter
C
pH value
D
color meter
Answer: pH value
#32.
Pipe fitting are intended to make change of
direction, turn and offset, but their use must be
planned carefully so that waste within the line
have free passage. What is the fitting used in a vertical to
horizontal changes of direction?
A
Tee fitting
B
wye fitting
C
tee
D
long sweep bend
Answer: long sweep bend
#33.
Drinking fountain or bubbler when they are
located in the building may be connected to the
pipe that terminate into __________________.
A
Soil pipe
B
Vent tank
C
Wet vent
D
Waste pipe
Answer: Waste pipe
#34.
What is the minimum pressure outlet to operate a flush valve in water closet and urinal?
A
25 psi
B
10 psi
C
15 psi
D
20 psi
Answer: 15 psi
#35.
Changes in direction of piping shall be made
by the use of approved pipe fittings & shall be the
angles presented by the following except
A
2 ½ degrees bend
B
45 degrees bend
C
60 degrees bend or other approved fittings of longer sweeps
D
30 degrees bend
Answer: 30 degrees bend
#36.
Horizontal drainage lines connecting to a
vertical stack shall enter through the following
except:
A
45 wye branches
B
Combination wye & 1/8 bend branches
C
Or other approved fittings of longer sweeps
D
30 wye bend
Answer: 30 wye bend
#37.
Vertical drainage lines connecting to other
horizontal drainage line shall enter through?
A
45 wye branches
B
60 degree branches or effects (only for pipes installed in the vertical position
C
45 degree branches
D
Or other approved fittings of longer sweeps
Answer: 45 degree branches
#38.
No drainage fitting shall use:
A
Double hub fitting for leak-caulked joint in vertical position
B
Single or double tapped tee branch
C
Side inlet quarter bend, running thread, band or saddle
D
All of the above
Answer: All of the above
#39.
No ____ shall be threaded.
A
Steel soil pipe
B
G.I soil pipe
C
Cast iron soil pipe
D
Pvc soil pipe
Answer: Cast iron soil pipe
#40.
Fixture directly connected to the drainage
system shall be equipped with a ____.
A
Ventilating system
B
Waste pipes
C
Soil pipes
D
Water sealed trap
Answer: Water sealed trap
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