Question 130Motor Plants - QMED

The correct answer is D) cycled on and off in response to steam demand. Constant capacity, pressure atomizing fuel burners on auxiliary boilers are designed to cycle on and off in response to changes in steam demand, rather than automatically adjusting the fuel or air supply. This allows the burners to maintain a consistent flame and combustion characteristics across a wide range of steaming loads, rather than trying to vary the atomization or air supply. The other options are incorrect because they do not accurately describe the standard operating principle for this type of fuel burner system.