Suppose a 4­inch diameter penstock delivers 150 gpm (gallon per minute)of water through an elevation change of 100 feet. The pressure in the pipe is 27 psi (pound per squareinch) when it reaches the powerhouse. a) What fraction of the available head is lost in the pipe?b) How much power is available for the turbine?

Refrigerant 134a enters an insulated compressor operating at steady state as saturated vapor at -26°c with a volumetric flow rate of 0.18 m3/s. refrigerant exits at 9 bar, 70°c. changes in kinetic and potential energy from inlet to exit can be ignored. determine the volumetric flow rate at the exit, in m3/s, and the compressor power, in kw.

In general, how do thermosetting plastics compare to thermoplastics in mechanical and physical properties?

The process in which the system pressure remain constant is called a)-isobaric b)-isochoric c)-isolated d)-isothermal