Ahorizontal steam turbine is supplied with steam at 15 bar and 300°c through a pipe 400 mm in diameter. the mass flow rate of the steam is 5 kg s-1. the steam leaves the turbine at 0.75 bar and 150°c with a velocity of 100m s-1. the steam loses heat at a rate of 15kj kg-1 as it passes through the turbine. determine: (a) the velocity of the steam as it passes down the pipe into the turbine. (b) the power output of the turbine

Explain the difference laminar and turbulent flow. explain it with the shear stress and the velocity profiles.

During a steady flow process, the change of energy with respect to time is zero. a)- true b)- false

Along 8-cm diameter steam pipe whose external surface temperature is 900c connects two buildings. the pipe is exposed to ambient air at 70c with a wind speed of 50 km/hr blowing across the pipe. determine the heat loss from the pipe per unit length. (b) air at 500c enters a section of a rectangular duct (15 cm x 20 cm) at an average velocity of 7 m/s. if the walls of the duct are maintained at 100c. a) the length of the tube for an exit temperature of the air to be 40 0c. b)the rate of heat transfer from the air. c) the fan power needed to overcome the pressure drop in this section of the duct.