Air enters the compressor of an air-standard Brayton cycle with a volumetric flow rate of 60 m3/s at 100 bar, 320 K. The compressor pressure ratio is 20, and the maximum cycle temperature is 2200 K. For the compressor, the isentropic efficiency is 92% and for the turbine, the isentropic efficiency is 95%. Determine (a). the net power developed, in MW, (b). the back work ratio, and (c). the thermal efficiency of the cycle.

Explain the difference laminar and turbulent flow. explain it with the shear stress and the velocity profiles.

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.

The thermal expansion or contraction of a given metal is a function of the f a)-density b)-initial temperature c)- temperature difference d)- linear coefficient of thermal expansion e)- final temperature f)- original length