NGWA - Study Questions - General Drilling Actual Exam 2026 || Most
Recent Exam 2026|2027 Actual Complete Real Exam Questions And
Correct Answers (Verified Answers) Already Graded A+ | Guaranteed
Success!! Newest Exam | Just Released!!
What is/are the main cause(s) of wear and breakage on wire rope? -
ANSWER-Overloading, violent jerking, and kinking.
To properly construct a large column screen well, one should take one
of the following steps. -ANSWER-Sample analysis.
One principal reason for increasing pipe diameter is to... -ANSWER-...
provide sufficient space for pumping equipment large enough to yield.
Who is the most qualified person to design a well? -ANSWER-
Hydrogeologist.
In proper well design... -ANSWER-... well screen intake velocity should
be less than 1'/second
Reduced yield from a water-bearing formation can be caused by... -
ANSWER-... screen incrustation.
, The diameter of a screen is not a critical factor in the specific capacity.
Double the diameter of a screen generally increases the specific
capacity by what percent? -ANSWER-7% to 10%.
When drilling in an unfamiliar area, the collection of samples... -
ANSWER-... can enable the ground water professional to correlate
formations from one area to another.
A well screen... -ANSWER-1. Is a filtering device.
2. Permits water to enter the well from the saturated aquifer.
3. Precent sediment from entering the well.
(T/F) Gravel-packed wells should be sealed at the top of the gravel pack
as well as in the annulus. -ANSWER-True.
(T/F) Dry cement may be mixed with water in the annulus to form an
acceptable surface seal. -ANSWER-False.
Pressure grouting requires that the grout must be... -ANSWER-... under
sufficient pressure to drive it into the zone to be grouted.
When only 40' of cement is required to grout the surface casing, one
can achieve a good seal by... -ANSWER-... placing from the bottom up
using a tremie grout pipe.
Recent Exam 2026|2027 Actual Complete Real Exam Questions And
Correct Answers (Verified Answers) Already Graded A+ | Guaranteed
Success!! Newest Exam | Just Released!!
What is/are the main cause(s) of wear and breakage on wire rope? -
ANSWER-Overloading, violent jerking, and kinking.
To properly construct a large column screen well, one should take one
of the following steps. -ANSWER-Sample analysis.
One principal reason for increasing pipe diameter is to... -ANSWER-...
provide sufficient space for pumping equipment large enough to yield.
Who is the most qualified person to design a well? -ANSWER-
Hydrogeologist.
In proper well design... -ANSWER-... well screen intake velocity should
be less than 1'/second
Reduced yield from a water-bearing formation can be caused by... -
ANSWER-... screen incrustation.
, The diameter of a screen is not a critical factor in the specific capacity.
Double the diameter of a screen generally increases the specific
capacity by what percent? -ANSWER-7% to 10%.
When drilling in an unfamiliar area, the collection of samples... -
ANSWER-... can enable the ground water professional to correlate
formations from one area to another.
A well screen... -ANSWER-1. Is a filtering device.
2. Permits water to enter the well from the saturated aquifer.
3. Precent sediment from entering the well.
(T/F) Gravel-packed wells should be sealed at the top of the gravel pack
as well as in the annulus. -ANSWER-True.
(T/F) Dry cement may be mixed with water in the annulus to form an
acceptable surface seal. -ANSWER-False.
Pressure grouting requires that the grout must be... -ANSWER-... under
sufficient pressure to drive it into the zone to be grouted.
When only 40' of cement is required to grout the surface casing, one
can achieve a good seal by... -ANSWER-... placing from the bottom up
using a tremie grout pipe.
