What is the purpose of excess air in furnace combustion?
A) Excess air is used for creating a high-fire second stage of combustion.
B) Excess air improves the draft efficiency by raising the combustion gas temperature.
C) Excess air ensures that all the gas is burned by making sure there is plenty of oxygen available.
D) Excess air ensures that the heat exchanger does not overheat.
C
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A landscaper has 125/ /6 cubic yards of peat moss in a truck. If he unloads 41/ /3 cubic yards at the first site and 54/ /5 cubic yards at the second, how many cubic yards of peat moss remain for the third site?
What will be an ideal response?
What can be done for a plant that has crown or stem rot?
What will be an ideal response?
Setting the amperage at 200 amps for a welding machine that is rated 300 amps at 60 -percent duty cycle will
_____. a. reduce the shielding gas flow rate by 30 percent b. cause excessive nozzle vibration c. increase the duty cycle to 100 percent d. allow welding current to be pulsed
Why can’t you find a function for each objective you generate in the objective tree?
What will be an ideal response?