Valve and Hydrant Maintenance Practice Questions

Question 1
Above ground reclaimed water facilities must be color-coded ________.
A
brown
B
purple
C
red
D
gray
Question 2
Thrust blocks prevent joint separation or other damage caused by water ________.
A
hammer
B
surge
C
end thrust
D
velocity
Question 3
Rotating the cone valve ________ degrees from full open closes the valve.
A
90
B
30
C
45
D
60
Question 4
Organizing a maintenance program starts with ________ of the distribution system or ________ of the plant or lift stations.
A
maps/permits
B
maps/prints
C
drawings/inspections
D
drawings/pictures
Question 5
According to AWWA’s hydrant color code, green indicates ________ flow and ________ gpm.
A
high/> 1,500
B
class A/1,000 – 1,500
C
class C/< 500
D
class B/500 – 1,000
Question 6
Instead of a disc or diaphragm, the movable element of a ________ valve is tapered to a fine point.
A
needle
B
plug
C
gate
D
butterfly
Question 7
A swing check valve is a special valve because it does not have a ________.
A
operator
B
body
C
connection
D
movable element
Question 8
Old hydrants usually have a coefficient of roughness of________%.
A
90
B
70
C
80
D
100
Question 9
To protect hydrants from vehicles, set them at least ________ feet from the curb.
A
four
B
three
C
five
D
two
Question 10
A ________ system may use a ________ grid to identify a section and then ________ the valves in each section.
A
small/number-color/letter
B
large/number-letter/number
C
small/color/paint
D
large/color/paint
Question 11
Open or close valves slowly to prevent water ________.
A
hammer
B
surges
C
leaks
D
slammer
Question 12
The ________ valve has a body of flexible material that acts as the moveable element.
A
gate
B
butterfly
C
pinch
D
globe
Question 13
Adjusting ACV action speed prevents ________.
A
leakage
B
freezing
C
water hammer
D
all listed
Question 14
Meet local standards when selecting and installing the backflow device and its ________.
A
appendages
B
appurtenances
C
appliances
D
apparatuses
Question 15
The movable element of a plug valve is ________ in shape.
A
spherical
B
rectangular
C
conical
D
cylindrical
Question 16
Level control valves are not true ACVs because they are not ________ or hydraulically activated.
A
remote controlled
B
motor driven
C
self-servicing
D
self-regulating
Question 17
After securing a map, ________ each valve.
A
designate
B
operate
C
paint
D
lubricate
Question 18
BPAT licensing must be renewed every ________ years.
A
three
B
two
C
four
D
five
Question 19
The altitude valve allows water into the tank, but closes at a set ________ to prevent tank overflow.
A
direction
B
pressure
C
volume
D
velocity
Question 20
After maintenance ________ the valve fully, then ________ it ________-________ turn(s) to prevent metal-to-metal contact and corrosion bonding.
A
close, open, 1/4 - 1/2
B
open, close, 1/2 - 3/4
C
open, close, 1/4 - 1/2
D
close, open, 8 - 10
Question 21
An easy way to designate a valve is to ________ it on a distribution map.
A
locate
B
all listed
C
mark
D
number
Question 22
________ well lift stations must have ________ separate sump pump(s).
A
dry/two
B
dry/one
C
wet/one
D
wet/two
Question 23
The most common automatic level control valve is the ________ valve.
A
float
B
globe
C
gate
D
altitude
Question 24
The ________ Manual M-14 contains a guide on selecting a backflow prevention device.
A
OSHA
B
EPA
C
TCEQ
D
AWWA
Question 25
Calculate the water hammer force on a 5-¼ inch main valve with a residual pressure of 65 psi. \fn_jvn (\pi r^2\times psi=force)
A
1,200 pounds
B
5,625 pounds
C
5,400 pounds
D
1,400 pounds
Question 25 Explanation: 
\large \fn_jvn 3.14\times2.625\times2.625\times65=1406
Question 26
Atmospheric vacuum breakers must not be subjected to continuous ________.
A
pressure
B
hazards
C
service
D
temperature
Question 27
What is the flow in gpm from a fire hydrant through the 2-½ inch nozzle, the coefficient of roughness is 80% and the pressure is 81 psi? \large \fn_jvn (gpm=29.7\times d^2\times pressure\times CR)
A
1,337 gpm
B
1,224 gpm
C
1,085 gpm
D
1,415 gpm
Question 27 Explanation: 
\large \fn_jvn 29.7\times2.5\times9\times0.80=1336.5
Question 28
The TCEQ requires a ________ with external lever on the discharge line of a lift station pump.
A
butterfly valve
B
swing check valve
C
double check valve
D
atmospheric vacuum breaker
Question 29
Pressure system isolation valves can be separated by no more than ________ feet along the main.
A
2,500
B
250
C
none listed
D
25
Question 30
Main valves are heavy and may settle if not supported on a ________ pad.
A
metal
B
wooden
C
concrete
D
plastic
There are 30 questions to complete.

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