Minnesota Special Engineer Boiler License Practice Exam Questions and Correct Answers

Minnesota Special Engineer Boiler License
Practice Exam Questions and Correct
Answers
Question 1
If water in the gauge is not visible because of failure of the feed water supply, what
should be done?
Correct Answer
Shut off the fuel to the burner and secure the boiler.



Question 2
The low water cut out is one of the most important electrical/mechanical devices on
your boiler. How often should you test it?
Correct Answer
Daily



Question 3
When you are performing a hydrostatic test on a boiler the water temperature shout
be at?
Correct Answer
70 F



Question 4
The oldest form of draft used in a boiler is ___________
Correct Answer
natural




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,Question 5
Heating surface is defined as
Correct Answer
Water on one side hot gas on the other side



Question 6
The control designed as a safety back up, should the operating fail is:
Correct Answer
A high limit control



Question 7
pop test
Correct Answer
safety valve test used to determine if a safety valve opens at the proper pressure
within allowable tolerances -- must be performed with at least 2 licensed engineers
present -- performed annually



Question 8
In a stem boiler system, the unit that turns be burner on and off based on steam
pressure is the:
Correct Answer
Pressure Control



Question 9
On a water column, what is the minimum size drain require?
Correct Answer
1/2 inch




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,Question 10
What is the maximum pressure carried on a low pressure hot water boiler
Correct Answer
160 psi



Question 11
Boiler water having a high alkalinity could develop ___
Correct Answer
caustic embrittlement



Question 12
Electrode Electric Boiler
Correct Answer
Heat is generated by an arc produced by an electric current flowing from one
electrode to another — effective in responding to demand



Question 13
Evaporative capacity output in a steam boiler expressed in ?
Correct Answer
Ponds per hour



Question 14
What boiler license is required for operating boiler as a shift engineer in a plant
having three boiler each having 1660 sq ft of heating surface?
Correct Answer
1st Class




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, Question 15
What control is a safety backup?
Correct Answer
High limit control



Question 16
Boiler are low pressure when?
Correct Answer
Steam boiler are not over 15 p.s.i and water boiler are not over 160 p.s.i and 250
degrees F.



Question 17
Name the different ways heat can be transferred and give a definition of each way.
Correct Answer
Radiation, Conduction, Convection



Question 18
Combustion Requires what three things?
Correct Answer
Fuel, Heat and Oxygen



Question 19
Tiny particles of water that are carried into the steam lines are called what?
Correct Answer
Carryover




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