Flame Rectification

What is the principle behind flame rectification used in gas burners?

• Ionization of gas molecules in the flame

• Thermal expansion of metals

• Chemical reaction of gas with oxygen

• Magnetic field interaction

Which component in a gas burner system is responsible for detecting the flame using flame rectification?

• Thermocouple

• Flame sensor

• Pressure switch

• Gas valve

In flame rectification, what type of current is used to detect the presence of a flame?

• Direct current (DC)

• Alternating current (AC)

• Pulsating current

• Static current

What happens to the ions in the flame during the flame rectification process?

• They are neutralized

• They conduct electricity

• They emit light

• They absorb heat

Tags

NGSS.MS-PS1-4

Why is flame rectification considered a reliable method for flame detection?

• It requires no external power source

• It is unaffected by ambient light

• It directly measures ionization in the flame

• It is the cheapest method available

Which of the following is a real-world application of flame rectification?

• Detecting gas leaks

• Controlling gas flow in furnaces

• Measuring temperature

• Monitoring air quality

What is the role of the flame sensor in a flame rectification system?

• To ignite the gas

• To measure temperature

• To detect the presence of a flame

• To control gas pressure

How does the flame rectification process ensure safety in gas appliances?

• By shutting off gas supply if no flame is detected

• By increasing gas flow when flame is detected

• By reducing temperature when flame is detected

• By emitting a warning sound when flame is detected

Tags

NGSS.MS-ETS1-3

What is the typical voltage range used in flame rectification systems?

• 1-5 volts

• 10-20 volts

• 50-100 volts

• 100-200 volts

Which gas property is primarily utilized in flame rectification?

• Density

• Ionization

• Viscosity

• Thermal conductivity