g Consider an adiabatic water pump with following operating condition: the mass flow rate through the pump is 1 kg/sec; enthalpy at the entry is 100 kJ/kg; enthalpy at the exit is 250 kJ/kg; entropy at the entry is 2.0 kJ/kg-K; entropy at the exit is 2.1 kJ/kg-K. The dead state is defined as 1 atm and 27 degree Celsius. The exergy destruction in the pump is

Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.

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.

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