Engineering Board Exam Reviewer · Fluid Mechanics · medium

A centrifugal pump requires 20 kW at 1450 rpm. What power will it require at 1740 rpm?

  1. 28.80 kW
  2. 34.56 kW
  3. 24.00 kW
  4. 11.57 kW

Answer

B. 34.56 kW

Solution

P N3: P2 = 20(1.2)3 = 34.56 kW.

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