Question 182Motor Plants - 1st Asst/Chief70% to pass
The pressuretrol which is installed on an auxiliary boiler senses steam pressure changes and _______________.
AI Explanation
The correct answer is D) automatically regulates the quantity of oil and air flow to the burner.
The pressuretrol is a safety device installed on an auxiliary boiler that senses changes in steam pressure. When the steam pressure rises or falls, the pressuretrol automatically adjusts the quantity of oil and air flow to the burner to maintain the desired steam pressure. This allows the boiler to operate safely and efficiently without requiring manual adjustments.
The other answer choices are incorrect because they do not accurately describe the primary function of the pressuretrol. The pressuretrol does not control the flow of feedwater (A), monitor the boiler high water level (B), or secure the fires when a fusible plug burns out (C).
Related Questions
#180 The solenoid valves in the fuel oil supply line to an automatically fired auxiliary boiler, are automatically closed by _______________.#181 Constant capacity, pressure atomizing, fuel burners designed to meet a wide variation in steaming loads on an auxiliary boiler, are_______________.#183 The primary function of a flame safeguard system, as used on an automatically fired auxiliary boiler, is to prevent_______________.#184 In the water level electrode assembly, shown in the illustration, the feed pump should restart when the level of the water reaches the position indicated by arrow '_____ '. Illustration MO-0047 #185 In the event of a flame failure in an auxiliary water-tube boiler, you must _______________.