Exam Question
Describe with the aid of sutiable graph, the discharge characteristics of a centrifugal pump. Explain why it does not require a relief valve (16)
Class 4 (4th Engineer)
MEKG
📅 Sep 2024
Reference Answer
### 1. Introduction to Centrifugal Pump Characteristics
A centrifugal pump is a roto-dynamic machine that imparts energy to a fluid by means of a rotating impeller. The performance of a centrifugal pump is defined by its characteristic curves, which graphically represent the relationships between Head (H), Capacity (Flow Rate, Q), Power consumption (P), and Efficiency (η) at a constant speed. These curves are essential for selecting the correct pump for a specific application and for understanding its operational behaviour.
### 2. The Characteristic Curves
The primary discharge characteristics are plotted on a graph with the pump's Capacity (Q) on the horizontal axis (x-axis) and Head, Power, and Efficiency on the vertical axis (y-axis).
A centrifugal pump is a roto-dynamic machine that imparts energy to a fluid by means of a rotating impeller. The performance of a centrifugal pump is defined by its characteristic curves, which graphically represent the relationships between Head (H), Capacity (Flow Rate, Q), Power consumption (P), and Efficiency (η) at a constant speed. These curves are essential for selecting the correct pump for a specific application and for understanding its operational behaviour.
### 2. The Characteristic Curves
The primary discharge characteristics are plotted on a graph with the pump's Capacity (Q) on the horizontal axis (x-axis) and Head, Power, and Efficiency on the vertical axis (y-axis).
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