Q. If two pumps identical in all respects and each capable of delivering a discharge Q against a head H are connected in series, the resulting discharge is

A
2Q against a head 2H
B
2Q against a head H
C
Q against head 2H
D
Q against head H
Solution:

When pumps are arranged in series , there heads get added with the same discharge. So here it becomes Q against 2H.

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