Two pumpscan operate independently at heads $$H_1, H_2$$ and discharges $$Q_1, Q_2$$, respectively. If the pumps are connected in parallel, then what are the resulting discharge (Q) and head (H)?

A

$$Q = Q_1 + Q_2 H = H_1 + H_2$$

B

$$Q = Q_1 - Q_2 H = H_1 - H_2$$

C

$$Q = Q_1 = Q_2 H = H_1 = H_2$$

D

$$Q = Q_1 + Q_2 H = H_1 = H_2$$