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


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