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Minnesota Special
Engineer Boiler License
Exam Questions and
Verified Answers
100% Correct
(2024-2025 New Update)
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Minnesota Special Engineer Boiler License Exam Questions and Verified Answers 100% Correct, Exams of Nursing
Q 1. Before testing a low water fuel cut-out what must be done? ~ Answer: The burner must be on. Q 2. Heat can be transferred in how many ways? ~ Answer: Three. Q 3. Aqua stats work by sensing: ~ Answer: Temperature. Q 4. Name the 3 different ways heat can be transferred. ~ Answer: Radiation, Conduction, Convection Q 5. How many types of boilers are there? ~ Answer: Three: Fire tube, Water tube, Cast iron sectional Q 6. What type of boiler can be made larger? ~ Answer: Cast Iron sectional Q 7. What type of boiler has the water surrounding the tubes? ~ Answer: Fire tube Q 8. What type of boiler has the water running through the tubes? ~ Answer: Water tube Q 9. The state of Minnesota requires boiler log books for ever boiler room, what are some of the things you should be writing down in the book? ~ Answer: The Engineer's name, today's date, outside temp, boiler pressure, boiler temp,
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Minnesota Special
Engineer Boiler License
Exam Questions and
Verified Answers
100% Correct
(2024-2025 New Update)
Q 1. Before testing a low water fuel cut-out what must be done? ~ Answer: The burner must be on. Q 2. Heat can be transferred in how many ways? ~ Answer: Three. Q 3. Aqua stats work by sensing: ~ Answer: Temperature. Q 4. Name the 3 different ways heat can be transferred. ~ Answer: Radiation, Conduction, Convection Q 5. How many types of boilers are there? ~ Answer: Three: Fire tube, Water tube, Cast iron sectional
Q 11.
Before the firing cycle what events must occur first to ensure safe opera- tion? ~ Answer: Safety controls in circuit must pass. Q 12. After blowing down the water column and gauge glass you are looking for the: ~ Answer: Water reentering the gauge glass to rise promptly. Q 13. Give an example of cold water start for a hot water boiler if no water is in the system. ~ Answer: XXX Q 14. Two low water fuel cut-outs are required when the BTU input of the burner exceeds: ~ Answer: 750, Q 15. A boiler equipped with the two low water fuel cut-outs must have on the secondary low water fuel cut-out. ~ Answer: A manual reset.
Q 16. A boiler with a new burner OR a new boiler room must have ~ Answer:A kill switch by each door leaving the boiler room. Q 17. The low water fuel cut off should be tested: ~ Answer: At least once a day when the boiler is in operation. Q 18. What is the purpose of a check valve used in a feed water line going to a steam boiler? ~ Answer: To restrict the flow in one direction only. Q 19. Where would you expect to locate pyrometer? ~ Answer: In the exhaust gases leaving the boiler Q 20. What would the pyrometer tell you? ~ Answer: The Temperature
Q 26.
One psi will push up a column of water how many feet? ~ Answer: 2.31 ft Q 27. Hot water boilers typically have blank psi on the boiler at all times. ~ Answer: 12-18 psi Q 28. What are two types of compression(expansion) tanks used on hydronic systems? ~ Answer: Diaphragm and open tanks Q 29. (^) What types of valves can be used for throttling the water flow? ~ Answer: Globe, ball Q 30. (^) On what part of the boiler should the safety relief valve be located? ~ Answer: Top of the boiler
Q 31. (^) What are the three types of valves that can be used on a boiler system??- ~ Answer: gate, globe, ball Q 32. NOWL- Normal Operating Water Level ~ Answer: The water level in a steam boiler under normal conditions. Q 33. BTU (British Thermal Unit) ~ Answer: The amount of heat necessary to raise one pound of water 1 degree Farenheit. Q 34. What is the part of the circulating pump that spins and forces water through the system?
~ Answer: High and Low pressure boilers not to exceed a total of 50 boiler horsepower, or a shift engineer in a 100 horsepower plant. Q 39. Special Engineer may serve as an apprentice of what size water/liquid or steam/vapor boiler? ~ Answer: In any plant regardless of size under the direct supervision of a properly licensed engineer. Q 40. The purpose of low water cut out on a steam or hot water boiler is to what? ~ Answer: Shut off the burner when a low water condition exists. Q 41. The valve or valves that must relieve all excess pressure on a steam or hot water boiler are what? ~ Answer: Safety valve and/or an ASME approved safety relief valve. Q 42. (^) A Tri indicator could be found on ~ Answer: Hot water boiler
Q 43. A tri indicator would inform the boiler operator of what? ~ Answer: The TEMPERA- TURE of the water, the PRESSURE of the water in PSIG, and the ALTITUDE of water in feet. Q 44. What is the destructive force in a steam or hot water boiler explosion? ~ Answer: The instant release of energy stored in the water as heat. Q 45. (^) An ASME approved safety relieve valve used on a hot water boiler is tested at the factory on what? ~ Answer: Steam first then hot water. Q 46. Some of the things you could find on a steam boiler (or hot water boiler) are what? ~ Answer: Low water cut off, safety valve or safety relief valve, pressure gauge. Q 47. What devices would only be found on a steam boiler? ~ Answer: Steam pressure gauge, tricocks, Pressuretrols
Q 53.
On a steam or hot water boiler, the safety valve or safety relief valve could be tested by? ~ Answer: When the boiler is running lifting the lever on the valve or raising the pressure until they operate. Q 54. Before starting a steam or hot water boiler you should check for what? ~ Answer: Water in the boiler. Q 55. True or False: Bottom blow down valves are used for both steam and hot water. ~ Answer: True Q 56. Safety valves or safety relief valves should be manually tested at least...?- ~ Answer: Monthly
Q 57.
The low water cut out is one of the most important electrical/mechanical devices on your boiler. How often should you test it? ~ Answer: Daily Q 58. What device must be located between a hot water boiler and the expansion tank? ~ Answer: A shut off valve so the expansion can be isolated and drained during operation of the boiler. Q 59. On a hot water boiler, every time the burner operates the safety relief valve opens. Why? ~ Answer: The expansion tank is water logged, or the isolating valve for the expansion tank is closed. Q 60. An Aquastat is used on a...? ~ Answer: Hot water boiler
Q 66.
What would you do if you came into a boiler room and found no water in the boiler? ~ Answer: Shut off the burner, secure the gas and allow the boiler to cool before refilling. Q 67. What is the purpose of the bottom blow down on a steam boiler? ~ Answer: To remove sludge and sediment and to drain the boiler. Q 68. When blowing down the water column the water should do what? ~ Answer: Refill the gauge glass quickly. Q 69. When doing the annual boiler inspection the boiler should... ~ Answer: Water and fire side cleaned and inspection ports open. Q 70. Purging is part of what cycle? ~ Answer: Firing cycle
Q 71.
All steam traps will prevent steam from passing through them but will allow what to pass through them? ~ Answer: Dirt, air, and condensate.