please answer both.. A)

B)

Agas/Co=512 R at 28C and admis compressed to 20 atm absina 3-stage compressa . I the corresor 1:30 Keficient , celulate the brake power required the compresionis (9 ) d'abatic blisthene bholbose with A standard 0.50 in orifice is installed in a 2 in schedule 40 pipe . Dly air (pdC1 = 14 at upstream conditions of 80'F and 20 psig flows through the office at such a rate that a U-tube manometer connected across the taps indicates a reading of 40 cm of oil . The ol has a specife gravity of 083 a) Calculate the volumetric flow rate of air at STP. b/What is the power consumption of the meter