100 boiler horsepower Study guides, Class notes & Summaries
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MN Boiler License Questions With Complete Solutions Graded A+
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MN Boiler License Questions With Complete Solutions Graded A+ 
 
a question 
an answer 
what are the conditions necessary for good combustion? 
a) low sulfur content 
b) Thermal, thermocoupler, tubular 
c) turbulence, temperature, time 3T's 
c) turbulence, temperature, time 3T's 
why is secondary air necessary in hand fired boilers? 
a) Necessary to burn the combustible gases 
b) if primary air should fail 
c) used only if sulfur content is high 
a) Necessary to burn the combustible gases 
when ...
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2024 update DC Third testing Questions and Answers 100% Pass
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2024 update DC Third testing Questions and 
Answers 100% Pass 
The component in which liquid vapor by absorbing heat is called? - Correct Answer ️️ - 
Evaporator 
Select the best answer electrical grounding method? - Correct Answer ️️ -Metal stake 
drive 8 foot into the ground. 
A _____ valve should be used for throttling purpose? - Correct Answer ️️ -Globe 
What is the acceptable range for residual sodium sulfite in the boiler maintain? - Correct 
Answer ️️ -30-70 
What is the B...
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Minnesota Special Engineer Boiler License Exam Prep (2023/2024 Update) | Questions and Verified Answers| 100% Correct
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Minnesota Special Engineer Boiler License Exam Prep (2023/2024 Update) | Questions and Verified Answers| 100% Correct 
 
Q: A feed water line must have what two valves? 
 
 
Answer: 
Check & stop 
 
 
 
Q: After a new boiler is installed, what must be performed? 
 
 
Answer: 
Hydrostatic test 
 
 
 
Q: All stationary boilers of what pressure must have 2 valves on the blow off line? 
 
 
Answer: 
100psi 
 
 
 
Q: How is boiler efficiency calculated? 
 
 
Answer: 
Output divided by input 
 
 
 
Q:...
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MINNESOTA SPECIAL ENGINEER BOILER LICENSE PRACTICE EXAM QUESTIONS WITH 100% CORRECT ANSWERS
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For the purpose of rating boiler horsepower for an Engineers License only, how many square feet of boiler surface shall be equivalent to one boiler horsepower on a boiler? CORRECT ANSWER 10 Sq. Ft. Heating Surface 
 
What is meant by the term "Low Pressure Boiler"? CORRECT ANSWER Boilers operating at a steam or other vapor pressure of 15psig or less, or a hot water or other liquid boiler in which the pressure does not exceed 160 psig or a temperature of 250 degrees F. 
 
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MN Special Engineers Practice Exam| 60 QUESTIONS| WITH COMPLETE SOLUTIONS
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for the purpose of rating boiler horsepower for an Engineers licence only, how many square feet of boiler surface shall be equivalent to one boiler horsepower on a boiler? correct answer: 10 Sq. Ft. Heating Surface 
 
What is meant by the term Low Pressure Boiler? correct answer: boilers operating at a steam or other vapor pressure of 15 psig. or less, or a hot water or other liquid boiler in which the pressure does not exceed 160 psig. Or a temperature of 250 f°. 
 
A person holding a curren...
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MN SPECIAL BOILERS LICENSE PREP TEST
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Special (License Grade) - Answer-Work in any type of plant 
 
Grade C (License Grade) - Answer-Can operate low-pressure steam or hot water (no steam engines/turbines) 
 
Grade B (License Grade) - Answer-Can operate high-pressure or low-pressure steam or hot water (no steam engines/turbines) 
 
Grade A (License Grade) - Answer-Can operate any plant including plants with steam engines/turbines 
 
Special (License Class) - Answer-Take Charge (max 50 hpr) 
Shift Engineer (max 100 hpr) 
 
2nd Class (...
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High Pressure Boilers questions with correct answers
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A low Pressure steam boiler has a MAWP of _____ psi CORRECT ANSWER-15 
 
The higher the steam pressure, the higher the ___ of the water in the boiler. CORRECT ANSWER-boiling point 
 
___ is the amount of energy equal to the evaporation of 34.5 lb of water/hr from and at a feedwater temp of 212F. CORRECT ANSWER-boiler horsepower 
 
When a steam boiler is operating at 100 pounds per square inch gauge pressure (psig), the temp of the water and steam will be approx. ___F. CORRECT ANSWER-338 
 
A hor...
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MN Boiler License question n answers graded A+ 2023/2024
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MN Boiler License 
What is the maximum boiler horsepower you may take charge of on a chief engineer's license? - correct answer Unlimited 
 
A 1st class engineer may take charge of a boiler plant not to exceed - correct answer 500 Boiler HorsePower 
 
If you were to fail a chief engineer's exam, how long must you wait before you would be allowed to take the test again - correct answer 30 Days 
 
What should be displayed in the boiler room? - correct answer Engineer's License and Exemption or ...
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MN Boiler License Questions with complete solution 2023/2024
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MN Boiler License Questions with complete solution 2023/2024 
What is the maximum boiler horsepower you may take charge of on a chief engineer's license? - correct answer Unlimited 
 
A 1st class engineer may take charge of a boiler plant not to exceed - correct answer 500 Boiler HorsePower 
 
If you were to fail a chief engineer's exam, how long must you wait before you would be allowed to take the test again - correct answer 30 Days 
 
What should be displayed in the boiler room? - correct a...
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High Pressure Boilers questions with correct answers
- Exam (elaborations) • 19 pages • 2023
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15 CORRECT ANSWER-A low pressure steam boiler has a MAWP of ___ psi. 
 
boiling point? CORRECT ANSWER-The higher the steam pressure, the higher the ___ of the water in the boiler. 
 
one boiler horsepower CORRECT ANSWER-___ is the amount of energy equal to the evaporation of 34.5 lb of water/hr from and at a feedwater temp of 212F. 
 
338 CORRECT ANSWER-When a steam boiler is operating at 100 pounds per square inch gauge pressure (psig), the temp of the water and steam will be approx. ___F. 
 
f...
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