1.

When the pumps are in series operation?

A. H = H₁ + H₂
B. 1/H = 1/H₁ +1/ H₂
C. Q = Q₁ + Q₂
D. 1/Q = 1/Q₁ + 1/Q₂
Answer» B. 1/H = 1/H₁ +1/ H₂


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