AK INDUSTRIAL PIPEFITTING CONTRACTOR EXAM
QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) Q&A 2027 |INSTANT DOWNLAD PDF
1. What is the primary function of a pipefitting system in an
industrial facility?
A. To provide structural framing
B. To transport fluids or gases
C. To provide electrical power
D. To finish concrete surfaces
Correct answer: B. To transport fluids or gases
Rationale: Industrial piping systems are designed to safely
convey liquids, gases, vapors, and other process materials
between equipment and locations.
2. Which property is most important when selecting pipe
material for a corrosive chemical service?
A. Color
B. Corrosion resistance
C. Surface appearance
D. Weight alone
Correct answer: B. Corrosion resistance
Rationale: The pipe material must withstand the chemical
environment without unacceptable deterioration.
,3. What does NPS primarily refer to in piping terminology?
A. Nominal Pipe Size
B. Normal Pressure System
C. National Pipe Standard
D. Nominal Pressure Specification
Correct answer: A. Nominal Pipe Size
Rationale: NPS is a standardized designation used to identify
pipe size.
4. What is the purpose of a pipe elbow?
A. To change the direction of piping
B. To measure pressure
C. To filter fluid
D. To reduce corrosion
Correct answer: A. To change the direction of piping
Rationale: Elbows redirect piping, commonly by 45° or 90° and
in other available angles.
5. Which fitting is normally used to connect three pipe runs?
A. Coupling
B. Tee
C. Cap
D. Union
,Correct answer: B. Tee
Rationale: A tee has three openings and is commonly used to
create a branch connection.
6. What is the purpose of a pipe reducer?
A. Increase pipe temperature
B. Change pipe diameter
C. Prevent all vibration
D. Measure flow
Correct answer: B. Change pipe diameter
Rationale: Reducers transition between different pipe sizes.
7. Which valve is commonly used for isolation rather than
throttling?
A. Gate valve
B. Globe valve
C. Needle valve
D. Control valve
Correct answer: A. Gate valve
Rationale: Gate valves are generally intended for fully open or
fully closed service.
8. Which valve is commonly suitable for regulating flow?
, A. Globe valve
B. Blind flange
C. Pipe cap
D. Check valve
Correct answer: A. Globe valve
Rationale: Globe valves are designed with flow-control
characteristics that make them suitable for throttling
applications.
9. What is the primary purpose of a check valve?
A. Increase pipe size
B. Prevent reverse flow
C. Reduce pipe temperature
D. Support the pipe
Correct answer: B. Prevent reverse flow
Rationale: A check valve permits flow in the intended direction
while restricting backflow.
10. What is the purpose of a pipe flange?
A. To create a detachable mechanical connection
B. To measure fluid density
C. To insulate every pipe
D. To remove oxygen from the system
QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) Q&A 2027 |INSTANT DOWNLAD PDF
1. What is the primary function of a pipefitting system in an
industrial facility?
A. To provide structural framing
B. To transport fluids or gases
C. To provide electrical power
D. To finish concrete surfaces
Correct answer: B. To transport fluids or gases
Rationale: Industrial piping systems are designed to safely
convey liquids, gases, vapors, and other process materials
between equipment and locations.
2. Which property is most important when selecting pipe
material for a corrosive chemical service?
A. Color
B. Corrosion resistance
C. Surface appearance
D. Weight alone
Correct answer: B. Corrosion resistance
Rationale: The pipe material must withstand the chemical
environment without unacceptable deterioration.
,3. What does NPS primarily refer to in piping terminology?
A. Nominal Pipe Size
B. Normal Pressure System
C. National Pipe Standard
D. Nominal Pressure Specification
Correct answer: A. Nominal Pipe Size
Rationale: NPS is a standardized designation used to identify
pipe size.
4. What is the purpose of a pipe elbow?
A. To change the direction of piping
B. To measure pressure
C. To filter fluid
D. To reduce corrosion
Correct answer: A. To change the direction of piping
Rationale: Elbows redirect piping, commonly by 45° or 90° and
in other available angles.
5. Which fitting is normally used to connect three pipe runs?
A. Coupling
B. Tee
C. Cap
D. Union
,Correct answer: B. Tee
Rationale: A tee has three openings and is commonly used to
create a branch connection.
6. What is the purpose of a pipe reducer?
A. Increase pipe temperature
B. Change pipe diameter
C. Prevent all vibration
D. Measure flow
Correct answer: B. Change pipe diameter
Rationale: Reducers transition between different pipe sizes.
7. Which valve is commonly used for isolation rather than
throttling?
A. Gate valve
B. Globe valve
C. Needle valve
D. Control valve
Correct answer: A. Gate valve
Rationale: Gate valves are generally intended for fully open or
fully closed service.
8. Which valve is commonly suitable for regulating flow?
, A. Globe valve
B. Blind flange
C. Pipe cap
D. Check valve
Correct answer: A. Globe valve
Rationale: Globe valves are designed with flow-control
characteristics that make them suitable for throttling
applications.
9. What is the primary purpose of a check valve?
A. Increase pipe size
B. Prevent reverse flow
C. Reduce pipe temperature
D. Support the pipe
Correct answer: B. Prevent reverse flow
Rationale: A check valve permits flow in the intended direction
while restricting backflow.
10. What is the purpose of a pipe flange?
A. To create a detachable mechanical connection
B. To measure fluid density
C. To insulate every pipe
D. To remove oxygen from the system
