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Q. |
Which of these accentuates clinkering trouble on furnace grate burning coal? |
A. | low reactivity of carbonised residue containing high proportions of iron and sulphur |
B. | low forced draught and low fuel bed temperature |
C. | thick fire bed and preheated primary air |
D. | all of the mentioned |
Answer» D. all of the mentioned | |
Explanation: all these reasons lead to clinkering. |
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