Minnesota Special Engineer Boiler License Exam Guide (Latest Update 2025 / 2026) | Questions and Verified Answers | 100% Correct
Exam Guide for MHS Custodians
Question:
What is the science of thermal energy and how it transforms to and from other forms of energy?
Answer:
Thermodynamics
Question:
What is the movement of heat from one material to another?
Answer:
Heat transfer
- / 4
Question:
What is the type of air supplied to a burner to mix directly with gas?
Answer:
Primary air
Question:
What is the air supplied to the furnace to control combustion efficiency?
Answer:
Secondary air
Question:
What is the air supplied to burner above theoretical amount required to burn fuel to ensure complete combustion?
Answer:
Excess air
Question:
How much air is required to burn 1lb of fuel?
Answer:
14-15lbs of air 2 / 4
Question:
This system provides proper amount of water to the burner.
Answer:
Feedwater system
Question:
This system provides fuel for combustion to produce the necessary heat in the boiler.
Answer:
Fuel system
Question:
This system regulates flow of air to and from the burner.
Answer:
Draft system
Question:
The maximum allowable working pressure in lbs per square inch at which a boiler can safely operate is called?
Answer:
Maximum allowable working pressure (MAWP) 3 / 4
Question:
What increases as the pressure increases inside the boiler?
Answer:
Boiling point of water
Question:
The pressure caused by the weight of air surrounding the earth.
Answer:
Atmospheric pressure
Question:
Heat and gases of combustion pass through tubes surrounded by water in what type of boiler?
Answer:
Firetube
Question:
Water passes through tubes surrounded by gases of combustion in what type of boiler?
Answer:
Water tube boilers
- / 4