Question 235Steam Plants - Assistant Engineer
70% to passWhich of the following represents the function of the diffuser used with a mechanical atomizing oil burner?
AComplete the vaporization of the fuel for combustion.
BControl the amount of secondary combustion air.
CFinely divide the fuel particles into a cone-shaped spray.
DProvide flame stability at the atomizer tip.
AI Explanation
The correct answer is D) Provide flame stability at the atomizer tip. The diffuser in a mechanical atomizing oil burner is designed to provide flame stability at the atomizer tip. Its primary function is to create a stable, well-defined flame pattern by controlling the airflow and fuel spray from the atomizer. This helps ensure complete and efficient combustion of the fuel. The other options are incorrect because: A) The vaporization of the fuel is primarily the role of the atomizer, not the diffuser. B) The diffuser does not directly control the amount of secondary combustion air. C) While the diffuser helps finely divide the fuel particles, this is not its primary function.
Related Questions
Q633:The labyrinth seals used on rotating steam turbine shafts reduces external leaka... Q372:In the prevention of moisture carryover from a marine boiler, one important cons... Q601:When the flow of oil admitted to a disk-type centrifugal purifier is in excess o... Q16:When testing boiler flue gas with a chemical absorption apparatus, to obtain acc... Q720:As shown in the illustration bellows "I" in the gland seal regulator is actuated...
Ready to test your knowledge?
Take a Steam Plants - Assistant Engineer Practice ExamOfficial Resources