MCQOPTIONS
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| 1. |
Combustion of furnace oil in a furnace (soaking pit) with preheated combustion air at 400 C results in saving of about __________ percent furnace oil as compared to its combustion with atmospheric air, if the flue gas outlet temperature from the soaking pit is 1200 C. |
| A. | 5 |
| B. | 60 |
| C. | 20 |
| D. | 40 |
| Answer» D. 40 | |