1.5-ibm of water at 350 psia fill a weighted piston-cylinder device whose volume is 1 ft. the water is then heated at constant pressure until the temperature reaches 550°f. determine the resulting change in the water's total entropy. problem 4 refrigerant-134a at 280 kpa and 50°c undergoes an isothermal process in a closed system until its quality is 40 percent. on per unit mass basis, determine how much work and heat transfer are required.

Adouble-strand no. 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and a 52-tooth driven sprocket. a) what is the allowable horsepower of this drive? b) estimate the center-to-center distance if the chain length is 82 pitches. c) estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30 percent less than the corrected (allowable) power.

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.

Have a greater impact on maintenance productivity than any other support group. (clo5) a)-the top management b)-inventory and purchasing c)-sub-contracting d)-cmms