UA STAR PIPEFITTER CERTIFICATION
EXAM QUESTION AND CORRECT
ANSWERS(VERIFIED ANSWERS) PLUS
RATIONALES 2026 Q&A INSTANT
DOWNLOAD PDF
1. Which document governs the quality requirements for welding on pressure
piping?
A. ASME Section I
B. API 1104
C. ASME Section IX
D. AWS D1.1
Answer: C
Rationale: ASME Section IX establishes qualification requirements for welding
and brazing procedures and personnel.
2. What is the primary purpose of a P&ID?
A. Show architectural layout
B. Show pipe routing only
C. Identify process equipment and controls
D. Show electrical wiring
Answer: C
Rationale: P&IDs illustrate process flow, equipment, instrumentation, and
control devices.
3. Which fitting is used to change pipe direction by 90 degrees?
A. Tee
B. Coupling
, C. Elbow
D. Reducer
Answer: C
Rationale: Elbows are designed to change the direction of piping, commonly 90°
or 45°.
4. What does NPS stand for?
A. Nominal Pipe Size
B. National Pipe Standard
C. Nominal Pressure System
D. Normal Pipe Schedule
Answer: A
Rationale: NPS is a dimensionless designation relating to pipe diameter.
5. Which material is commonly used for high-temperature steam piping?
A. PVC
B. Copper
C. Carbon steel
D. Aluminum
Answer: C
Rationale: Carbon steel withstands high temperatures and pressures typical of
steam systems.
6. What instrument measures pressure?
A. Thermocouple
B. Flowmeter
C. Pressure gauge
D. Level switch
Answer: C
Rationale: Pressure gauges directly indicate system pressure.
7. What is the primary hazard of confined space entry?
A. Noise
B. Poor lighting
, C. Oxygen deficiency
D. Weather
Answer: C
Rationale: Confined spaces often lack adequate oxygen, posing serious risks.
8. Which welding position is designated “5G”?
A. Flat pipe
B. Horizontal pipe
C. Fixed horizontal pipe
D. Fixed vertical pipe
Answer: C
Rationale: 5G refers to a fixed pipe in the horizontal position.
9. What tool is used to cut threaded pipe?
A. Hacksaw
B. Pipe cutter
C. Threader
D. Grinder
Answer: B
Rationale: Pipe cutters provide clean, square cuts on pipe.
10.Which valve is best for throttling flow?
A. Gate valve
B. Globe valve
C. Check valve
D. Ball valve
Answer: B
Rationale: Globe valves allow precise flow control.
11.What schedule indicates thicker pipe walls?
A. Schedule 10
B. Schedule 20
C. Schedule 40
D. Schedule 80
EXAM QUESTION AND CORRECT
ANSWERS(VERIFIED ANSWERS) PLUS
RATIONALES 2026 Q&A INSTANT
DOWNLOAD PDF
1. Which document governs the quality requirements for welding on pressure
piping?
A. ASME Section I
B. API 1104
C. ASME Section IX
D. AWS D1.1
Answer: C
Rationale: ASME Section IX establishes qualification requirements for welding
and brazing procedures and personnel.
2. What is the primary purpose of a P&ID?
A. Show architectural layout
B. Show pipe routing only
C. Identify process equipment and controls
D. Show electrical wiring
Answer: C
Rationale: P&IDs illustrate process flow, equipment, instrumentation, and
control devices.
3. Which fitting is used to change pipe direction by 90 degrees?
A. Tee
B. Coupling
, C. Elbow
D. Reducer
Answer: C
Rationale: Elbows are designed to change the direction of piping, commonly 90°
or 45°.
4. What does NPS stand for?
A. Nominal Pipe Size
B. National Pipe Standard
C. Nominal Pressure System
D. Normal Pipe Schedule
Answer: A
Rationale: NPS is a dimensionless designation relating to pipe diameter.
5. Which material is commonly used for high-temperature steam piping?
A. PVC
B. Copper
C. Carbon steel
D. Aluminum
Answer: C
Rationale: Carbon steel withstands high temperatures and pressures typical of
steam systems.
6. What instrument measures pressure?
A. Thermocouple
B. Flowmeter
C. Pressure gauge
D. Level switch
Answer: C
Rationale: Pressure gauges directly indicate system pressure.
7. What is the primary hazard of confined space entry?
A. Noise
B. Poor lighting
, C. Oxygen deficiency
D. Weather
Answer: C
Rationale: Confined spaces often lack adequate oxygen, posing serious risks.
8. Which welding position is designated “5G”?
A. Flat pipe
B. Horizontal pipe
C. Fixed horizontal pipe
D. Fixed vertical pipe
Answer: C
Rationale: 5G refers to a fixed pipe in the horizontal position.
9. What tool is used to cut threaded pipe?
A. Hacksaw
B. Pipe cutter
C. Threader
D. Grinder
Answer: B
Rationale: Pipe cutters provide clean, square cuts on pipe.
10.Which valve is best for throttling flow?
A. Gate valve
B. Globe valve
C. Check valve
D. Ball valve
Answer: B
Rationale: Globe valves allow precise flow control.
11.What schedule indicates thicker pipe walls?
A. Schedule 10
B. Schedule 20
C. Schedule 40
D. Schedule 80
