Slight smoking during the start-up of a cold oil-fired boiler is caused by:

Slight smoking during the start-up of a cold oil-fired boiler is caused by:

Slight smoking during the start-up of a cold oil-fired boiler is caused by:




a. Dislodging soot from the gas passes
b. Having the initial fire too hot
c. Over purging of the furnace
d. A cold furnace
e. Under purging of the furnace






Answer: D


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