Amount of coal lost in ash particle, which is carried through the boiler system, depends upon the__________________?
Correct answer: D. All A., B. and C.
- A. Physical nature, ash content and fineness of the coal
- B. Amount of excess air supplied and load on the boiler
- C. Type of burner and combustion chamber
- D. All A., B. and C.
Explanation
Unburnt coal carried with fly ash depends on coal fineness, ash content, and physical properties, as well as excess air, boiler load, burner design, and furnace-chamber conditions. Therefore, all three groups of factors matter.
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