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Which is most preferred type of draught system?

Which is most preferred type of draught system? Correct Answer Balanced draught

A balanced draught system combines the features of forced draught and induced draught. In case of forced draught, when the furnace doors are opened high pressure air rushes outside and even blow out the fire entirely. In case of induced draught, when the furnace doors are opened to atmosphere air enters the furnace and causes imbalance in the draught. This difficulty is overcome by using balanced draught.

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