To ensure a thick piece of metal is cut squarely, angle the torch . (welding) A. Slightly toward the piece that will become scrap
B. Toward the beginning of the cut (drag angle)
C. Slightly toward the piece to be saved or used
B. Perpendicular

Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false

During a steady flow process, the change of energy with respect to time is zero. a)- true b)- false

Air (c-1.006 kj/kg.k, r-0.287 kj/kg.k) enters a nozzle steadily at 280 kpa and 77°c with a velocity of 50 m/s and exits at 85 kpa and 320 m/s. the heat losses from the nozzle to the surrounding medium at 20°c are estimated to be 3.2 kj/kg. determine (a) the exit temperature and (b) the total entropy change for this process. solve this problem using constant specific heats.