Question 11Steam 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 monitors the steam pressure. When the steam pressure changes, the pressuretrol automatically adjusts the oil and air flow to the burner to maintain the desired steam pressure. This helps prevent dangerous pressure fluctuations in the boiler.
The other options are incorrect because they do not accurately describe the primary function of the pressuretrol. The pressuretrol does not control the flow of feed water (A), monitor the water level (B), or secure the fires when a fusible plug burns out (C). Its main purpose is to regulate the combustion process to maintain safe boiler pressure.
Related Questions
#9 Which of the following actions takes place in the control circuit of an automatically fired auxiliary boiler when the desired steam pressure is obtained? #10 A photoelectric cell installed in an automatically fired auxiliary boiler burner management system _______________.#12 The primary function of a flame safeguard system, as used on an automatically fired auxiliary boiler, is to prevent _______________.#13 Constant capacity, pressure atomizing, fuel burners designed to meet a wide variation in steaming loads on an auxiliary boiler, are _______________.#14 During unsafe firing conditions in a large automatic auxiliary boiler, various control actuators are interlocked with the burner circuit to prevent start-up, in addition to safety shutdown. These controls are referred to as _______________.