Combination burners use:
a. Two different gas burners arrangements
b. Two different pilot flames
c. Two different fuels
d. Two different air supplies
Answer: C
Learn More :
Power Engineering Chapter 92
- Premix Percentage is the another name for:
- Which features do Motorized Gas Valves have? 1. Slow to open, quick to close 2. Quick to open, slow to close 3. Fail-safe 4. Spring and supply pressure to close 5. Spring and supply pressure to open
- To prevent a furnace puff, larger size solenoid type oil and gas valves usually have a delayed opening action so that it takes __ seconds to open the valve up wide, but they close instantly when de-energized.
- Diaphragm Gas Valve is popular as a control valve for?
- Which pilots are ignited electrically by means of electrodes?
- An ___ pilot is used to light off the main burner but does not burn throughout the burner "on" period.
- A ____ pilot burns at all times and has to be manually ignited.
- The __________ pilot is most often used on small boilers.
- One of the advantages of the refractory (gas) burner is the
- A refractory burner disadvantage is
- When an atmospheric gas fired burner is burning fuel properly:
- An atmospheric premix burner has air entering around the flame that is termed:
- Atmospheric burners are used for:
- Large capacity burners:
- The main function of a gas burner is:
- The Venturi tube in the atmospheric burner mixing head has a:
- An atmospheric burner head which is very popular on heating boilers is the:
- A solenoid type fuel valve;
- Which of the following is NOT a pilot for a gas burner?
- An intermittent pilot:
- A very popular packaged boiler gas burner is the:
- Gas burners for heating boilers can be divided into two general classes:
- One of the advantages of using natural gas as a fuel in a boiler is:
- The amount of pre-mix air to an atmospheric burner is typically: