City of Omaha Steamfitter Journeyman
Exam Practice Questions And Correct
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Rationale 2026 Q&A| Instant Download
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1. A steamfitter journeyman is installing a low-pressure steam heating
system. Which component is primarily responsible for removing
condensate from the steam main while preventing the escape of live
steam?
A. Pressure-reducing valve
B. Steam trap
C. Expansion joint
D. Air separator
Answer: B. Steam trap
A steam trap automatically discharges condensate and non-condensable
gases while preventing the loss of live steam, improving system efficiency
and protecting piping components.
2. In a steam piping system, what is the primary purpose of installing a
drip leg at the bottom of a vertical drop?
A. Increase steam velocity
B. Remove moisture and accumulated condensate
C. Reduce pipe friction
D. Increase system pressure
,Answer: B. Remove moisture and accumulated condensate
A drip leg collects condensate and moisture that forms in steam lines,
allowing proper drainage and reducing the risk of water hammer.
3. When determining the correct pipe size for a steam distribution
system, which factor is most important?
A. Pipe color and insulation thickness
B. Steam pressure, flow rate, and allowable velocity
C. Number of pipe supports only
D. Type of pipe wrench used
Answer: B. Steam pressure, flow rate, and allowable velocity
Proper steam pipe sizing requires consideration of operating pressure,
required steam capacity, and acceptable velocity to maintain efficient and
safe operation.
4. What type of valve is commonly used for throttling and regulating flow
in a steam system?
A. Gate valve
B. Globe valve
C. Check valve
D. Plug valve
Answer: B. Globe valve
Globe valves are designed for flow regulation because their internal design
allows precise control of fluid movement.
5. The purpose of a pressure-reducing valve in a steam system is to:
A. Increase steam temperature
B. Lower steam pressure to a controlled value
,C. Remove condensate
D. Eliminate pipe expansion
Answer: B. Lower steam pressure to a controlled value
Pressure-reducing valves automatically reduce higher upstream steam
pressure to a lower downstream pressure suitable for equipment
operation.
6. Which material is commonly used for high-temperature steam piping
because of its strength and durability?
A. PVC
B. Copper tubing
C. Carbon steel
D. Polyethylene
Answer: C. Carbon steel
Carbon steel piping is widely used in steam applications because it
withstands high temperatures and pressures better than plastic or softer
materials.
7. Water hammer in a steam system is usually caused by:
A. Excessive insulation
B. Rapid valve operation only
C. Condensate accumulation mixed with moving steam
D. Oversized pipe supports
Answer: C. Condensate accumulation mixed with moving steam
Water hammer occurs when high-speed steam contacts accumulated
condensate, creating shock waves that can damage piping and equipment.
8. What is the function of an expansion loop in a piping system?
, A. Increase fluid pressure
B. Absorb thermal expansion movement
C. Remove air from the system
D. Reduce pipe diameter
Answer: B. Absorb thermal expansion movement
Expansion loops provide flexibility that allows piping to expand and
contract as temperatures change without creating excessive stress.
9. Which type of fitting is used to connect three sections of pipe?
A. Elbow
B. Coupling
C. Tee
D. Union
Answer: C. Tee
A tee fitting has one inlet and two outlets or two inlets and one outlet,
allowing branch connections in piping systems.
10. A steamfitter uses a pipe hanger primarily to:
A. Increase pipe temperature
B. Support piping and maintain alignment
C. Reduce pipe pressure
D. Remove corrosion
Answer: B. Support piping and maintain alignment
Pipe hangers support the weight of piping systems while allowing proper
movement and maintaining correct slope and alignment.
11. Which instrument measures pressure in a steam system?
A. Thermometer
B. Flow meter
Exam Practice Questions And Correct
Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
1. A steamfitter journeyman is installing a low-pressure steam heating
system. Which component is primarily responsible for removing
condensate from the steam main while preventing the escape of live
steam?
A. Pressure-reducing valve
B. Steam trap
C. Expansion joint
D. Air separator
Answer: B. Steam trap
A steam trap automatically discharges condensate and non-condensable
gases while preventing the loss of live steam, improving system efficiency
and protecting piping components.
2. In a steam piping system, what is the primary purpose of installing a
drip leg at the bottom of a vertical drop?
A. Increase steam velocity
B. Remove moisture and accumulated condensate
C. Reduce pipe friction
D. Increase system pressure
,Answer: B. Remove moisture and accumulated condensate
A drip leg collects condensate and moisture that forms in steam lines,
allowing proper drainage and reducing the risk of water hammer.
3. When determining the correct pipe size for a steam distribution
system, which factor is most important?
A. Pipe color and insulation thickness
B. Steam pressure, flow rate, and allowable velocity
C. Number of pipe supports only
D. Type of pipe wrench used
Answer: B. Steam pressure, flow rate, and allowable velocity
Proper steam pipe sizing requires consideration of operating pressure,
required steam capacity, and acceptable velocity to maintain efficient and
safe operation.
4. What type of valve is commonly used for throttling and regulating flow
in a steam system?
A. Gate valve
B. Globe valve
C. Check valve
D. Plug valve
Answer: B. Globe valve
Globe valves are designed for flow regulation because their internal design
allows precise control of fluid movement.
5. The purpose of a pressure-reducing valve in a steam system is to:
A. Increase steam temperature
B. Lower steam pressure to a controlled value
,C. Remove condensate
D. Eliminate pipe expansion
Answer: B. Lower steam pressure to a controlled value
Pressure-reducing valves automatically reduce higher upstream steam
pressure to a lower downstream pressure suitable for equipment
operation.
6. Which material is commonly used for high-temperature steam piping
because of its strength and durability?
A. PVC
B. Copper tubing
C. Carbon steel
D. Polyethylene
Answer: C. Carbon steel
Carbon steel piping is widely used in steam applications because it
withstands high temperatures and pressures better than plastic or softer
materials.
7. Water hammer in a steam system is usually caused by:
A. Excessive insulation
B. Rapid valve operation only
C. Condensate accumulation mixed with moving steam
D. Oversized pipe supports
Answer: C. Condensate accumulation mixed with moving steam
Water hammer occurs when high-speed steam contacts accumulated
condensate, creating shock waves that can damage piping and equipment.
8. What is the function of an expansion loop in a piping system?
, A. Increase fluid pressure
B. Absorb thermal expansion movement
C. Remove air from the system
D. Reduce pipe diameter
Answer: B. Absorb thermal expansion movement
Expansion loops provide flexibility that allows piping to expand and
contract as temperatures change without creating excessive stress.
9. Which type of fitting is used to connect three sections of pipe?
A. Elbow
B. Coupling
C. Tee
D. Union
Answer: C. Tee
A tee fitting has one inlet and two outlets or two inlets and one outlet,
allowing branch connections in piping systems.
10. A steamfitter uses a pipe hanger primarily to:
A. Increase pipe temperature
B. Support piping and maintain alignment
C. Reduce pipe pressure
D. Remove corrosion
Answer: B. Support piping and maintain alignment
Pipe hangers support the weight of piping systems while allowing proper
movement and maintaining correct slope and alignment.
11. Which instrument measures pressure in a steam system?
A. Thermometer
B. Flow meter
