Air flows through a pipe at a rate of 120 L/s. The pipe consists of two sections of diameters 22 cm and 10 cm with a smooth reducing section that connects them. The pressure difference between the two pipe sections is measured by a water manometer. Neglecting frictional effects, determine the differential height of water between the two pipe sections. Take the air density to be 1.20 kg/m³. Air 120 L/s 22 cm 110 cm

Air enters a fan through a duct at a velocity of 6.4 m/sec and an inlet static pressure of 2.4 cm of water less than atmospheric pressure. The air leaves the fan through a duct at a velocity of 11.26 m/sec and a discharge static pressure of 7.63 cm of water above the atmospheric pressure. If the specific weight of the air is 1.22 kg/m3 and the fan delivers 9.46 m3/sec, what is the fan efficiency when the power input to the fan is 17.36 KW at the coupling?

20.3 cm diam 2.44 m 1.22 m Water Air at 105 kPa and 37°C flows upward through a 6-cm-diameter inclined duct at a rate of Q (L/s). The density of air at this temperature and pressure is 1.10 Kg/m³. The duct diameter is then reduced to 4 cm through a reducer. The pressure change across the reducer is measured by a water Air manometer. The elevation difference between the two points on the pipe where the two arms of the manometer are attached is 0.20 m. Determine the differential height between the fluid levels of the two arms of the manometer. Q (L/s) 90

A plane with a jet engine is flying at 790 mph into a 80 mph headwind. The area of the jet engine inlet is 2.5 square feet. Determine the volumetric flow rate of air into the jet engine inlet in cubic feet/second.