An axis has a horizontal leadscrew that moves a 150 lb load. the screw has 5 threads per inch (p = 5 rev/in), ⇢ = 4.48 oz/in3 density, 42 in length, ⌘ = 0.75 eciency and 1.5 in diameter. the linear bearing friction coecient is µ = 0.15. the motion profile is trapezoidal with ta = td = 150 ms, tm = 1s, tdw = 0 s and vm = 2 in/s. all coupler inertias and carriage inertia are negligible. the servomotor has jm = 6.56 oz in2 inertia. calculate the peak and rms torques (in units of oz in) required for this application

Amass of m 1.5 kg of steam is contained in a closed rigid container. initially the pressure and temperature of the steam are: p 1.5 mpa and t 240°c (superheated state), respectively. then the temperature drops to t2= 100°c as the result of heat transfer to the surroundings. determine: a) quality of the steam at the end of the process, b) heat transfer with the surroundings. for: p1.5 mpa and t 240°c: enthalpy of superheated vapour is 2900 kj/kg, specific volume of superheated vapour is 0. 1483 m/kg, while for t 100°c: enthalpy of saturated liquid water is 419kj/kg, specific volume of saturated liquid water is 0.001043m/kg, enthalpy of saturated vapour is 2676 kj/kg, specific volume of saturated vapour is 1.672 m/kg and pressure is 0.1 mpa.

Water at 70°f and streams enter the mixing chamber at the same mass flow rate, determine the temperature and the quality of the exiting stream. 0 psia is heated in a chamber by mixing it with saturated water vapor at 20 psia. if both streams enters the mixing chamber at the same mass flow rate, determine the temperature and the quality of the existing system.

Determine whether or not it is possible to compress air adiabatically from k to 140 kpa and 400 k. what is the entropy change during this process?