The power output of an adiabatic steam turbine is 5 mw, and the inlet conditions of the steam are as p1 = 2 mpa, t1 = 400°c, v1 = 50 m/s, z1 = 10 m, and exit conditions are given as p2 = 15 kpa, x2 = 90%, v2 = 180 m/s, z 2 = 6 m. thus,
(a) compare the magnitudes of h, ke, and pe. [ dh=-887.39 kj/kg; dke=14.95 kj/kg; dpe=-0.04 kj/kg]
(b) determine the work done per unit mass of the steam flowing through the turbine.[ 872.48 kj/kg]
(c) calculate the mass flow rate of the steam.[ 5.73 kg/s

The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force

The speed of sound in ice, water, and steam is shown. what best explains the speed of sound in different states of matter? sound travels fastest in ice because energy is easier to transfer when the molecules are close together. sound travels slowest in steam because the sound has to move around the gas molecules that are far apart. sound travels fastest in ice because the temperature of solids is always greater, so the heat transfers the sound energy. sound travels slowest in steam because the pressure is so great the sound cannot travel though the steam particles.

Diamond will scratch quartz. true or false