Air flows in a steady manner through a converging tube. At the inlet there are 690kPaa and 1.193m3/kg. If 125m3/min of air enters at the rate of 1.57 m/sec and the exit section has a diameter of 35cm, determine (a) the mass flow rate in kg/sec, (b) the diameter of the entrance section in mm and (c) the exit velocity in m/min.

Consider a wind turbine that is situated in an area that has steady winds. The turbine rotates at 16 RPM. The mass flow rate through the turbine is 41,025 kg/s. The tip velocity is 260 km/hr. Take the air density to be 1.31 kg/m² and assume 180kW of electric power is generated by the turbine. Determine the following: a. Average velocity of the air b. The efficiency of the turbine c. Assuming winds are steady for 95% of the year, is this a suitable location for a wind turbine? Explain.

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.

A water is flowing through the duct having daimeter 15 cm and length 15 m. The inlet temperature of water is 100 °C & exit temperature is 5 °C respectively. Calculate the mass flow rate of water through the duct in mol/sec by considering heat transfer due to convection. Individual heat transfer coefficent is 15 w/m2K.