MN Boiler License Exam Questions And Actual Answers 2024.

a question - Answer an answer what are the conditions necessary for good combustion? a) low sulfur content b) Thermal, thermocoupler, tubular c) turbulence, temperature, time 3T's - Answer 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 - Answer a) Necessary to burn the combustible gases when pressure increases on steam from a given amount of water what happens to its volume and latent heat? a) increases b) decreases c) remains the same - Answer b) decreases when pressure increases on steam from a given amount of water what happens to its temperature? a) increases b) decreases c) remains the same - Answer a) increases when carbon monoxide (co) is formed and carbon dioxide (co2) is very high what does it generally signify? a) More "under the fire air" is needed