Air flows through a horizontal duct of 300 x 300mm with a velocity of 15 m/s. At position 1 in this duct, a water gauge registers a height of 215

mm.The duct bends downwards and reduces in size to240 x 240 mm, dropping a distance of 12 m to position 2. The specific volume of the air is 0.85m³/kg, and this may be taken to be constant.Determine: (a) The pressure at point 2 in KPa (gauge) if losses are neglected. (b) The pressure at point 2 in KPa (gauge) if losses are 10% of the total head at point 1. Note: consider the elevation at point 2 as a datum.