MN Boilers test practice (special)2023/2024

MN Boilers test practice (special)The dial on a steam gauge on a low-pressure boiler must be graduated from _ to _ times the maximum allowable working pressure - correct answer 1 1/2 to 2 What is the minimum size of pipe diameter that may be used to attach a steam gauge to a steam boiler? - correct answer 1/4 inch Steam boilers are designed to operate at or below what PSI? - correct answer 15 Liquid Boilers are designed to operate at or below what PSI? - correct answer 160 What is the term of the area of the boiler that has water/liquid on one side and the heat source on the other? - correct answer Heating Surface What type of safety valve is required on a steam boiler? - correct answer Spring-Loaded When the heating surface of a _____-pressure boiler exceeds ____ square feet, the minimum number of safety valves is what? - correct answer High, 500, 2 or more 4 1/2 inches is the maximum size safety valve that may be installed on on a _________ boiler - correct answer low-pressure The maximum size safety relief valve on a low-pressure boiler is what? - correct answer 4 1/2 inches How many Kw equals 1 boiler horsepower? - correct answer 10 10 Kw is equal to how much boiler horesepower? - correct answer 1