INTRODUCTION OBJECTIVES - Plant Services

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138 FLUID POWER SYSTEMSActivity 4-4: Pump AnalysisRefer to Hydraulic System to answer the following questions.1. The pump displacement in Hydraulic System is rated at 2.56 cu. in. and is rotating at1200 rpm. If flow meter FM1 shows a reading of 12.25 gpm, what is the pump efficiencyof the pump to FM1?2. The pump displacement in Hydraulic System is rated at 1.34 cu. in. and is rotating at1000 rpm. If flow meter FM2 shows a reading 5.2 gpm what is the pump efficiency ofthe pump to FM2?3. The pump displacement in Hydraulic System is rated at 1.34 cu. in. and is rotating at1000 rpm. If flow meter FM3 shows a reading 4.2 gpm what is the pump efficiency ofthe pump to FM3?4. What is the difference in pump efficiency between FM2 and FM3?5. List at least two possible reasons for the difference in flow from FM2 and FM3.
Chapter 4 — Hydraulic Pumps 1396. The technician responsible for inspecting Hydraulic System notices that the pump efficiency is down 12% at eachflow meter. List at least five possible reasons for lower pump efficiency. Note: Assume that the system could possiblybe damaged.
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INTRODUCTION OBJECTIVES - Plant Services

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