Combustion gases flow into a boiler (non-mixing, insulated from the surroundings) at 2000k, 1 bar. there is no pressure loss on the gas side and the gases exit at 800k. saturated water enters the boiler at 6 mpa and exits as saturated vapor at 6 mpa. the water flow rate is 10 kg/s. the specific heat at constant pressure is .

Vibration monitoring this technique uses the noise or vibration created by mechanical equipment and in seme cases by plant systems to detemine their actual condtion. a)- true b)- false

Avolume of 2.65 m3 of air in a rigid, insulated container fitted with a paddle wheel is initially at 264 k, 5.6 bar. the air receives 432 kj by work from the paddle wheel. assuming the ideal gas model with cv = 0.71 kj/kg • k, determine for the air the amount of entropy produced, in kj/k

The power source in a certain welding setup generates 3500w that is transferred to the low carbon steel work with a heat transfer factor of 0.85. the melting factor in the operation is 0.45. a continuous fillet weld is to be made with a cross-sectional area of 23 mm2 determine the travel speed at which the welding can be accomplished.