Steam flows through a well-insulated throttling valve. the upstream (inlet) conditions are 500°f and 300 psia, and the downstream (outlet) pressure is 5 psia. (a) what is the downstream temperature (°c) of the stream? (b) for the same temperature and pressure conditions as stated above, if the flowing fluid was air (which you may assume is an ideal gas with cp-1.055 kj/kg"c), what would be the downstream temperature (°c)?

Aloaded platform of total mass 500 kg is supported by a dashpot and by a set of springs of effective stiffness 72 kn/m. it is observed that when the platform is depressed through a distance x = 12.5 cm below its equilibrium position and then released without any initial velocity; it reaches its equilibrium position in the shortest possible time without overshoot. find the position and velocity of the loaded platform 0.10 sec. after its release. if a further load of 400 kg is added to the platform, find, i) the frequency of damped vibrations, and i) the amplitude of vibration after 2 complete oscillations, given that the initial amplitude is 15 cm.

Abrake has a normal braking torque of 2.8 kip in and heat-dissipating cast-iron surfaces whose mass is 40 lbm. suppose a load is brought to rest in 8.0 s from an initial angular speed of 1600 rev/min using the normal braking torque; estimate the temperature rise of the heat dissipating surfaces.

Inspection for bearing condition will include: (clo4) a)-color b)-smell c)-size d)-none of the above