TFS · Practice Exam 2 · Problem 60PDFSolution in PDF ↓
TFS · Practice Exam 2 · Problem 60
Problem & Solution
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- Problem: A single phase 240 volt motor drives a pump that supplies a hundred pounds per minute of 80 degree water and adds 400 feet of pressure head.
- Approach: So to do that we'll use the mass flow rate in the density and you should always remember that mass flow rate is density times volume flow rate.
- Key values: 70 %, 90 %, 3 in
- Reference: look up, reference handbook
- Result: It's got to be in feet over 3960 that gives us a hydraulic horsepower of 1.21 horsepower and now we'll use that to find the input electrical power to ...
- ✅ Answer: D
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