Question

When a centrifugal pump is started,there will be no flow of water until the pressure rise in the impeller is large enough to overcome the?

Answer 1

Answer:manometric head

Explanation:

Answer 2

Answer:

When the centrifugal pump is started, then there is "no flow of water" until the impeller pressure rise is large enough to "overcome the manometric head".

Explanation:

• The 'manometric head' is the total energy head required and 'developed by the pump' in order to meet its external requirements.
• It is the 'actual total head' a pump can achieve. The centrifugal pump must work against the manometric head to function.
• The manometric head is the total gross and effective head which is a collective of the "static head plus" the losses of the head during the flow before, through and after the impeller.