hydraulically equivalent, the relationship which holds good, is _______________? August 15, 2021January 22, 2019 by admin hydraulically equivalent, the relationship which holds good, is _______________? A. D8/3 = 4 b8/3 B. D3/8 = 4 b3/8 C. D2/3 = 4 b2/3 D. D3/2 = 4 b3/2