AZ L-53 Water Well Pump Contractor Exam
Questions and Correct Answers (Verified
Answers) Plus Rationale 2027 Q&A| Instant
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This practice exam covers water well pump systems, pump selection,
electrical controls, plumbing, pressure systems, installation,
troubleshooting, safety, and maintenance. These are original practice
questions for study purposes and are not official Arizona licensing
examination questions.
Section 1: Water Well Pump Fundamentals
1. What is the primary function of a water well pump?
a. To increase the natural groundwater temperature
b. To remove sediment from the aquifer
,c. To lift groundwater from the well and deliver it to the distribution
system
d. To prevent groundwater from entering the well casing
Rationale: A water well pump creates the pressure or mechanical
action necessary to move groundwater from the well to a storage
tank, pressure system, or point of use. It does not remove all sediment
or alter the aquifer itself.
2. Which type of pump is commonly installed below the water level in
a deep residential well?
a. Centrifugal jet pump mounted above ground
b. Submersible pump
c. Reciprocating air compressor
d. Gravity-fed transfer pump
Rationale: A submersible pump is designed to operate underwater
and push water upward through the discharge pipe. It is widely used
in deep wells because it avoids the suction-lift limitations associated
with above-ground pumps.
3. What is the static water level of a well?
a. The water level while the pump is operating
,b. The water level when the well is at rest and pumping has stopped
long enough for recovery
c. The depth of the well casing
d. The elevation of the pump discharge
Rationale: Static water level is measured from a defined reference
point when the well is not being pumped and the water level has
stabilized. It provides a baseline for evaluating drawdown and well
performance.
4. What does pumping water level refer to?
a. The groundwater level before the pump starts
b. The bottom of the well screen
c. The water level in the well while pumping is taking place
d. The water level in a storage tank
Rationale: Pumping water level, also called dynamic water level, is the
water level during operation. It is typically lower than the static level
because pumping causes drawdown in the well.
5. What is drawdown in a water well?
a. The distance between the well casing and the pump
, b. The difference between the static water level and the pumping
water level
c. The total depth of the well
d. The distance water travels through the distribution piping
Rationale: Drawdown measures the lowering of the water level
caused by pumping. It is calculated by subtracting the pumping water
level depth from the static water level depth, using the same
measuring reference.
6. Which measurement is most directly used to describe a well's
yield?
a. The diameter of the pressure tank
b. The length of the electrical cable
c. The volume of water the well can produce per unit of time
d. The number of plumbing fixtures in the building
Rationale: Well yield is the quantity of water a well can supply over a
specified period, commonly expressed in gallons per minute (GPM).
Sustainable yield must be evaluated in relation to pumping duration
and groundwater recovery.
7. What is the purpose of a well casing?
Questions and Correct Answers (Verified
Answers) Plus Rationale 2027 Q&A| Instant
Download Pdf
This practice exam covers water well pump systems, pump selection,
electrical controls, plumbing, pressure systems, installation,
troubleshooting, safety, and maintenance. These are original practice
questions for study purposes and are not official Arizona licensing
examination questions.
Section 1: Water Well Pump Fundamentals
1. What is the primary function of a water well pump?
a. To increase the natural groundwater temperature
b. To remove sediment from the aquifer
,c. To lift groundwater from the well and deliver it to the distribution
system
d. To prevent groundwater from entering the well casing
Rationale: A water well pump creates the pressure or mechanical
action necessary to move groundwater from the well to a storage
tank, pressure system, or point of use. It does not remove all sediment
or alter the aquifer itself.
2. Which type of pump is commonly installed below the water level in
a deep residential well?
a. Centrifugal jet pump mounted above ground
b. Submersible pump
c. Reciprocating air compressor
d. Gravity-fed transfer pump
Rationale: A submersible pump is designed to operate underwater
and push water upward through the discharge pipe. It is widely used
in deep wells because it avoids the suction-lift limitations associated
with above-ground pumps.
3. What is the static water level of a well?
a. The water level while the pump is operating
,b. The water level when the well is at rest and pumping has stopped
long enough for recovery
c. The depth of the well casing
d. The elevation of the pump discharge
Rationale: Static water level is measured from a defined reference
point when the well is not being pumped and the water level has
stabilized. It provides a baseline for evaluating drawdown and well
performance.
4. What does pumping water level refer to?
a. The groundwater level before the pump starts
b. The bottom of the well screen
c. The water level in the well while pumping is taking place
d. The water level in a storage tank
Rationale: Pumping water level, also called dynamic water level, is the
water level during operation. It is typically lower than the static level
because pumping causes drawdown in the well.
5. What is drawdown in a water well?
a. The distance between the well casing and the pump
, b. The difference between the static water level and the pumping
water level
c. The total depth of the well
d. The distance water travels through the distribution piping
Rationale: Drawdown measures the lowering of the water level
caused by pumping. It is calculated by subtracting the pumping water
level depth from the static water level depth, using the same
measuring reference.
6. Which measurement is most directly used to describe a well's
yield?
a. The diameter of the pressure tank
b. The length of the electrical cable
c. The volume of water the well can produce per unit of time
d. The number of plumbing fixtures in the building
Rationale: Well yield is the quantity of water a well can supply over a
specified period, commonly expressed in gallons per minute (GPM).
Sustainable yield must be evaluated in relation to pumping duration
and groundwater recovery.
7. What is the purpose of a well casing?
