Question
a.
Increasing the impeller speed and the volute area.
b.
Increasing the number of vanes in the impeller.
c.
Mounting of two or more impellers in series on a single shaft.
d.
Either of (a), (b) or (c).
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Q. Which of the following options will facilitate the achievement of a very high head (say 30 metres) in case of a centrifugal pump?
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