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| 1. |
Find out the temperature of outside air if a chimney 30 m high creates a draught of 25 m in terms of column if hot gases. The temperature of hot gases is 330°C. 18 kg of air is to be supplied for complete combustion of 1 kg of fuel. |
| A. | 38°C |
| B. | 28°C |
| C. | 25°C |
| D. | 32°C |
| Answer» B. 28°C | |