Control of the fuel oil metering valve in an...

Question 1 / 2707066636ef128f7522a1c5211b5

Question 1 of 2707066636ef128f7522a1c5211b5

Control of the fuel oil metering valve in an automatically fired boiler is accomplished by a __________.

Question 1 of 27070

Control of the fuel oil metering valve in an automatically fired boiler is accomplished by a __________.

🔍 Key Concepts

• Automatic boiler combustion control – what variable must be controlled first to adjust fuel safely? • Relationship between steam pressure, air flow, and fuel flow in an automatically fired boiler • Which components actually measure conditions vs. which simply respond to them

💭 Think About

• Ask yourself: in an automatically fired boiler, what is the primary condition that tells the system to increase or decrease the fuel oil flow? • Think about which option directly controls FUEL, and which options are more related to AIR or WATER control instead. • Which device would most likely send a control signal to a fuel metering valve, rather than just mechanically changing air or sensing water level?

✅ Before You Answer

• Identify which choice is associated with steam pressure sensing and how that relates to fuel demand. • Separate in your mind the functions of air control, water level/feedwater control, and fuel control – only one should be directly tied to the fuel oil metering valve in this question. • Verify which device would create a control signal (not simply a passive mechanical effect) that can be used to position the fuel metering valve.

Question 1 of 27070

Control of the fuel oil metering valve in an automatically fired boiler is accomplished by a __________.

pressure magnifying device in the steam coil outlet

steam pressure sensing device with linkage to the damper air vanes

metering device in the air supply line

signal from the feedwater electrode

Question 1 / 2707066636ef128f7522a1c5211b5

Question 1 of 2707066636ef128f7522a1c5211b5

Control of the fuel oil metering valve in an automatically fired boiler is accomplished by a __________.

Back

Question 1 of 27070

Control of the fuel oil metering valve in an automatically fired boiler is accomplished by a __________.