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| Q. |
In a furnace employing forced draught compared to induced draught |
| A. | the fan operates hot and hence blades are liable to corrosion and erosion |
| B. | positive pressure exists in the furnace |
| C. | air is sucked in, so air leaks are more and hence furnace efficiency is reduced |
| D. | none of the mentioned |
| Answer» C. air is sucked in, so air leaks are more and hence furnace efficiency is reduced | |
| Explanation: a positive pressure exists in the furnace employing forced draught. | |
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