Question 316Steam Plants - Assistant Engineer70% to pass
In an automatically fired boiler, the steam pressure regulator controls the supply of fuel oil to the burners by responding to variations in the _______________.
AI Explanation
The correct answer is A) steam header pressure.
In an automatically fired boiler, the steam pressure regulator controls the supply of fuel oil to the burners by responding to variations in the steam header pressure. The steam pressure regulator is designed to maintain a constant steam pressure by adjusting the fuel oil supply to the burners. As the steam header pressure fluctuates, the regulator will increase or decrease the fuel oil flow to the burners to keep the pressure stable.
The other options are incorrect because they do not directly control the fuel oil supply. The burner flame intensity, steam drum water level, and master fuel oil solenoid valve position may influence the boiler operation, but they are not the primary control parameter for the fuel oil supply regulated by the steam pressure controller.
Related Questions
#314 Combustion control systems on automatic boilers are designed to prevent immediate burner ignition after a normal or safety shutdown in order to allow time for _______________.#315 When firing a boiler in local manual control, an increase in boiler load must be accompanied by a/an _______________.#317 In automated boiler operations, a dirty flame scanner will most likely result in _______________.#318 Which of the following represents a significant system limitation to be aware of when a burner management system is operated in the 'HAND' mode? #319 A photoelectric cell is installed in an oil fired boiler safeguard system to introduce proper resistance values to the electronic control circuit. This device is primarily sensitive to _______________.