) Steam enters a turbine operating at steady state at 800oF and 250 lbf/in.2 with a velocity of 100 ft/s and leaves as saturated vapor at 5 lbf/in.2 with a velocity of 400 ft/s. The power developed by the turbine is 200 horsepower. The mass flow rate is 3000 lb/h. Neglecting potential energy effects, determine the heat transfer from the turbine to the surroundings in Btu/h.

The y form of iron is known as: a) ferrite b) cementite c) perlite d) austenite

When using the ohmmeter function of a digital multimeter, the leads are placed in what position relative to the component being tested? a. parallel b. control c. series d. line

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.