For each statement about centrifugal pumps, choose whether the statement is true or false, and discuss your answer briefly:

(a) A centrifugal pump with radial blades has higher efficiency than the same pump with backward-inclined blades.

(b) A centrifugal pump with radial blades produces a larger pressure rise than the same pump with backward- or forward inclined blades over a wide range of V̇.

(c) A centrifugal pump with forward-inclined blades is a good choice when one needs to provide a large pressure rise over a wide range of volume flow rates.

(d) A centrifugal pump with forward-inclined blades would most likely have less blades than a pump of the same size with backward-inclined or radial blades.