Calculate the draught in mm of water using the following data.Power of the motor = 5 kWEfficiency of the motor = 75%Volume of the air at N.T.P. = 0.7734 m3Mass of air supplied per kg of fuel = 18 kgCoal consumption rate = 1800 kg/hrAmbient temperature = 25°CTemperature of the gases leaving the boiler = 330°CThe motor drives a forced draught fan.

Calculate the draught in mm of water using the following data.Power o

1.	Calculate the draught in mm of water using the following data.Power of the motor = 5 kWEfficiency of the motor = 75%Volume of the air at N.T.P. = 0.7734 m3Mass of air supplied per kg of fuel = 18 kgCoal consumption rate = 1800 kg/hrAmbient temperature = 25°CTemperature of the gases leaving the boiler = 330°CThe motor drives a forced draught fan.
A.	50.31 mm of water
B.	45.32 mm of water
C.	41.32 mm of water
D.	17.65 mm of water
Answer» B. 45.32 mm of water

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