In case of pulverised coal fired steam boiler, the secondary air serve – McqOptions

MCQOPTIONS

1.	In case of pulverised coal fired steam boiler, the secondary air serves the main purpose of
A.	transportation of coal.
B.	drying of coal.
C.	combustion of coal by supplying it around the burner.
D.	preheating the primary air.
Answer» D. preheating the primary air.

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