Gas Control Systems Quiz tuesday

Some of these types of controls require a button or lever to be operated to reinstate the gas after the lid has been shut on a cooker. What is this type of control?

• Thermo-Electric Device

• Solenoid Valve

• Safety Shut Off Valve

• Gas Tap

What is the purpose of the control that detects air contamination and lack of oxygen, and reacts with lack of oxygen in the primary air port?

• Safety Shut Off Device

• Oxy-Pilot - Vitiation Device

• Flame Rectification

• Vapour Pressure FSD

if the flame is extinguished on a modern boiler, and the DC voltage is not conducted back to the PCB in a modern boiler, it goes to lock out, what is the name of the control system?

• Multifunction Valve

• Flame Rectification

• Solenoid Valve

• Flame Conductance

Flames contain freely-moving charged particles called ions. What does this allow them to do?

• Appliance Regulator

• Flame Conduction

• Electromagnetic Solenoid Valve

• allow a current through the flame

What happens if the flame is extinguished in the circuit board system?

• The circuit board will detect that current flow has stopped.

• The circuit board will increase the current flow.

• The circuit board will ignore the change.

• The circuit board will decrease the current flow.

What does the liquid vapor expansion device (FSD) do when the flame is present?

• Closes the burner gas valve

• Holds the burner gas valve open

• Increases the burner gas flow

• Decreases the burner gas flow

What happens to the fluid in the phial when the flame is extinguished?

• It expands and opens the gas valve.

• It cools and contracts back into the phial. closes bellows

• It evaporates completely.

• It remains unchanged.

What does the phial use to determine the temperature?

• Gas flow

• Fluid expansion

• Electrical current

• Magnetic field

What is the purpose of the 'bypass' in the gas tap of an oven?

• To stop all gas flow to burner

• To allow a small amount of gas to flow to burner

• To increase the gas flow to burner

• To decrease the gas flow to burner

What generates a magnetic field that can be used to open or close a gas valve?

• Thermo-Couple

• Oxy-Pilot - Vitiation Device

• Multifunctional Valve

• Thermo electric valve