7-42a 0.5-m3 rigid tank contains refrigerant-134a initially at 200 kpa and 40 percent quality. heat is transferred now to the refrigerant from a source at 35°c until the pressure rises to 400 kpa. determine the entropy change of the refrigerant.

What precautions should you take to prevent injuries when dealing with heavy loads?

Machinery that is a key part of the process and without which the plant or process cannot function is classifed as: (clo4) a)-critical machinery b)-essential machinery c)-general purpose machinery d)-none of the specified options.

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.