Q
In case of pulverised coal fired steam boiler, the secondary air serves the main purpose of__________________?
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A
A. Transportation of coal
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B
B. Drying of coal
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C
C. Combustion of coal by supplying it around the burner
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D
D. Preheating the primary air
Correct Answer:
C. C. Combustion of coal by supplying it around the burner
