In case of steady flow compression polytropic process (PVn = constant), the work done on air is the lowest, when_______________? August 29, 2021March 12, 2019 by admin In case of steady flow compression polytropic process (PVn = constant), the work done on air is the lowest, when_______________? A. n = y = 1.4 B. n = 0C. n = 1 D. n = 1.66