Boiler Exam Practice Tests
1. removes sludge and sediment from the mud drum
Answer The bottom blowdown on a boiler .
2. outside diameter
Answer Boiler tubes are sized using the .
3. tin
Answer A boiler fusible plug is brass or bronze with a core of .
4. hairline cracks in the refractory
Answer Spalling in a boiler refers to .
5. 34.5
Answer Boiler horsepower is the evaporation of lb of water/hr from and at a feedwater temperature of 212°F.
6. steam temperature
Answer A siphon installed between the boiler and the pressure gauge protects the Bourdon tube from .
7. 10 to 11.5
, Answer The pH of the boiler water should be .
8. steam leaving the boiler
Answer The boiler superheater raises the temperature of the .
9. feedwater
Answer An economizer is used to preheat .
10. oily waste rags
Answer Fires caused by spontaneous combustion would probably start in the .
11. dirty strainers
Answer A high suction reading on the fuel oil pressure gauge indicates .
12. try cock
Answer The is a secondary means of determining boiler water level.
13. pyrometer
Answer A(n) is used to measure furnace temperature.
14. 1 ½
Answer The range of a boiler pressure gauge must not be less than times the safety valve setting.
,15. prevent formation of scale
Answer Boiler feedwater is chemically treated to .
16. deadweight tester
Answer Pressure gauges are calibrated with a(n) .
17. inside tube surface
Answer In a firetube boiler, soot settles on the .
18. complete
Answer Carbon dioxide in the flue gas is a sign of combustion.
19. incomplete
Answer Carbon monoxide in the flue gas is a sign of combustion.
20. Globe
Answer valves should be used for throttling service.
21. a dirty heating surface
Answer A gradual increase in chimney temperature indicates .
22. 1 ½
, Answer The pressure applied on the boiler during a hydrostatic test is times the MAWP.
23. 6
Answer Boiler safety valve capacity must be such that the steam pressure can never go higher than % above the
MAWP.
24. decreased
Answer As fuel oil is heated, its viscosity is .
25. 6
Answer No. fuel oil has the highest Btu content per gallon.
26. T
Answer T/F All steam boilers must have one or more safety valves.
27. T
Answer T/F An open feedwater heater vents gases to the atmosphere.
28. F
Answer T/F A hydrostatic test will determine whether a steam boiler has suflcient relieving capacity.
29. T
1. removes sludge and sediment from the mud drum
Answer The bottom blowdown on a boiler .
2. outside diameter
Answer Boiler tubes are sized using the .
3. tin
Answer A boiler fusible plug is brass or bronze with a core of .
4. hairline cracks in the refractory
Answer Spalling in a boiler refers to .
5. 34.5
Answer Boiler horsepower is the evaporation of lb of water/hr from and at a feedwater temperature of 212°F.
6. steam temperature
Answer A siphon installed between the boiler and the pressure gauge protects the Bourdon tube from .
7. 10 to 11.5
, Answer The pH of the boiler water should be .
8. steam leaving the boiler
Answer The boiler superheater raises the temperature of the .
9. feedwater
Answer An economizer is used to preheat .
10. oily waste rags
Answer Fires caused by spontaneous combustion would probably start in the .
11. dirty strainers
Answer A high suction reading on the fuel oil pressure gauge indicates .
12. try cock
Answer The is a secondary means of determining boiler water level.
13. pyrometer
Answer A(n) is used to measure furnace temperature.
14. 1 ½
Answer The range of a boiler pressure gauge must not be less than times the safety valve setting.
,15. prevent formation of scale
Answer Boiler feedwater is chemically treated to .
16. deadweight tester
Answer Pressure gauges are calibrated with a(n) .
17. inside tube surface
Answer In a firetube boiler, soot settles on the .
18. complete
Answer Carbon dioxide in the flue gas is a sign of combustion.
19. incomplete
Answer Carbon monoxide in the flue gas is a sign of combustion.
20. Globe
Answer valves should be used for throttling service.
21. a dirty heating surface
Answer A gradual increase in chimney temperature indicates .
22. 1 ½
, Answer The pressure applied on the boiler during a hydrostatic test is times the MAWP.
23. 6
Answer Boiler safety valve capacity must be such that the steam pressure can never go higher than % above the
MAWP.
24. decreased
Answer As fuel oil is heated, its viscosity is .
25. 6
Answer No. fuel oil has the highest Btu content per gallon.
26. T
Answer T/F All steam boilers must have one or more safety valves.
27. T
Answer T/F An open feedwater heater vents gases to the atmosphere.
28. F
Answer T/F A hydrostatic test will determine whether a steam boiler has suflcient relieving capacity.
29. T
