BOILER & REFRIGERATION EXAM 2026-2027: 110
PRACTICE Q&A WELL CLASSIFIED ANSWERS |LATTEST
VERSION |100% CORRECT QUESTIONS AND ANWERS
|ALREADY GRADED A+
Questions 1–10: Boiler Fundamentals
1. What is the primary purpose of a boiler?
A. Cool refrigerant
B. Generate steam or hot water
C. Compress gas
D. Remove humidity
Answer: B. Generate steam or hot water
2. A fire-tube boiler contains:
A. Water inside tubes
B. Steam outside tubes
C. Hot gases inside tubes
D. Refrigerant inside tubes
Answer: C. Hot gases inside tubes
3. A water-tube boiler contains:
A. Water inside tubes
B. Fire outside boiler only
C. Air in tubes
D. Oil in tubes
Answer: A. Water inside tubes
4. The safety valve on a boiler is used to:
A. Increase pressure
B. Reduce fuel flow
C. Prevent overpressure
D. Stop water flow
Answer: C. Prevent overpressure
5. Boiler pressure is commonly measured in:
A. Volts
B. PSI
C. Watts
D. Amps
Answer: B. PSI
, 6. Low water in a boiler can cause:
A. Efficient operation
B. Tube overheating
C. Increased cooling
D. Lower temperature only
Answer: B. Tube overheating
7. The steam drum in a boiler is used to:
A. Store fuel
B. Separate steam from water
C. Pump condensate
D. Cool exhaust gases
Answer: B. Separate steam from water
8. A boiler blowdown removes:
A. Steam pressure
B. Excess fuel
C. Sediment and impurities
D. Oxygen only
Answer: C. Sediment and impurities
9. The most common boiler fuel is:
A. Nitrogen
B. Diesel or natural gas
C. Oxygen
D. Helium
Answer: B. Diesel or natural gas
10. Scale buildup in boilers reduces:
A. Heat transfer efficiency
B. Steam pressure only
C. Water level
D. Oxygen content
Answer: A. Heat transfer efficiency
Questions 11–20: Boiler Components &
Operation
11. The function of a feedwater pump is to:
A. Remove steam
B. Supply water to the boiler
C. Increase airflow
D. Drain condensate
Answer: B. Supply water to the boiler
12. A sight glass is used to monitor:
A. Steam quality
PRACTICE Q&A WELL CLASSIFIED ANSWERS |LATTEST
VERSION |100% CORRECT QUESTIONS AND ANWERS
|ALREADY GRADED A+
Questions 1–10: Boiler Fundamentals
1. What is the primary purpose of a boiler?
A. Cool refrigerant
B. Generate steam or hot water
C. Compress gas
D. Remove humidity
Answer: B. Generate steam or hot water
2. A fire-tube boiler contains:
A. Water inside tubes
B. Steam outside tubes
C. Hot gases inside tubes
D. Refrigerant inside tubes
Answer: C. Hot gases inside tubes
3. A water-tube boiler contains:
A. Water inside tubes
B. Fire outside boiler only
C. Air in tubes
D. Oil in tubes
Answer: A. Water inside tubes
4. The safety valve on a boiler is used to:
A. Increase pressure
B. Reduce fuel flow
C. Prevent overpressure
D. Stop water flow
Answer: C. Prevent overpressure
5. Boiler pressure is commonly measured in:
A. Volts
B. PSI
C. Watts
D. Amps
Answer: B. PSI
, 6. Low water in a boiler can cause:
A. Efficient operation
B. Tube overheating
C. Increased cooling
D. Lower temperature only
Answer: B. Tube overheating
7. The steam drum in a boiler is used to:
A. Store fuel
B. Separate steam from water
C. Pump condensate
D. Cool exhaust gases
Answer: B. Separate steam from water
8. A boiler blowdown removes:
A. Steam pressure
B. Excess fuel
C. Sediment and impurities
D. Oxygen only
Answer: C. Sediment and impurities
9. The most common boiler fuel is:
A. Nitrogen
B. Diesel or natural gas
C. Oxygen
D. Helium
Answer: B. Diesel or natural gas
10. Scale buildup in boilers reduces:
A. Heat transfer efficiency
B. Steam pressure only
C. Water level
D. Oxygen content
Answer: A. Heat transfer efficiency
Questions 11–20: Boiler Components &
Operation
11. The function of a feedwater pump is to:
A. Remove steam
B. Supply water to the boiler
C. Increase airflow
D. Drain condensate
Answer: B. Supply water to the boiler
12. A sight glass is used to monitor:
A. Steam quality
