A portion of the steam passing through a steam turbine is sometimes removed and used in a feedwater heater. The turbine losses 860 kW of heat to the surroundings with steam entering at 12.5 MPa and 550 °C at a rate of 20 kg s-1. Steam is bled from the turbine at 1000 kPa and 200 °C at a mass flow rate of 1 kg s-1. The remaining steam exits at 100 kPa and 100 °C. What is the power output from the turbine

Adouble-strand no. 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and a 52-tooth driven sprocket. a) what is the allowable horsepower of this drive? b) estimate the center-to-center distance if the chain length is 82 pitches. c) estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30 percent less than the corrected (allowable) power.

Thermal stresses are developed in a metal when its a) initial temperature is changed b) final temperature is changed c) density is changed d) thermal deformation is prevented e) expansion is prevented f) contraction is prevented

Water in a partially filled large tank is to be supplied to the roof top, which is 8 m above the water level in the tank, through a 2.2-cm-internal-diameter pipe by maintaining a constant air pressure of 300 kpa (gage) in the tank. if the head loss in the piping is 2 m of water, determine the discharge rate of the supply of water to the roof top in liters per second.