MN Special Engineers Practice Exam| 60 QUESTIONS| WITH COMPLETE SOLUTIONS

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 current state of Minnesota Special Engineers Licence could be in charge of or a shift engineer in what size plants(s)? correct answer: High and low pressure boiler not to exceed a total of 50 horsepower, or a shift engineer in a 100 Horsepower plant. Special Engineer may serve as apprentice of what size water/liquid or steam/vapor boiler? correct answer: In any plant regardless of size under the direct supervision of the properly licensed engineer. the purpose of the low water cut out on a steam-or hot water boiler is to what? correct answer: Shut off the burner when a low water condition exists. The valve or valves that must relive all excess pressure on a steam or hot water boiler are what? correct answer: Safety valve and/or an ASME approved safety relief valve. A Tri indicator could be found on a: correct answer: Steam boiler. A Tri indicator would inform the boiler operator of what? cor