#$2.$ Consider the formula for the back work ratio $().$ Following the example in

class where we derived the relationship between thermal efficiency and pressure ratio, find a

relationship between bwr and the pressure ratio $().$ Assume the Brayton cycle operates

between two set temperatures $($ K and K$).$ Use a graphing software make a

plot of the back work ratio, as a function of the pressure ratio. Does this make intuitive

sense? Should back work ratio increase or decrease with an increasing pressure ratio?

b wr $=$ h$2$ h$1$

h$3$ h$4$

p$2$

p$1$

T$1=300$ T$3=1400$