Table of Contents
- 1 What is the characteristic curve?
- 2 What is characteristic curve of centrifugal pump?
- 3 How do you calculate pump characteristic curve?
- 4 What is the importance of the characteristic curve?
- 5 What is HQ curve?
- 6 How do you choose pump based on pump curve?
- 7 Which of the following is an example of attribute characteristics?
- 8 What’s the significance of pump characteristic curves?
- 9 How to read a pump curve?
- 10 What are the characteristics of centrifugal pump?
What is the characteristic curve?
A characteristic curve is a graph of the relationship between the amount of exposure given a film and it’s corresponding density after processing. 1. A typical film characteristic curve is made by plotting density produced, against the log of exposure given (Log E).
What is characteristic curve of centrifugal pump?
The characteristic curves of centrifugal pumps plot the course of the following parameters against flow rate (Q): head (H) (see H/Q curve), power input (P), pump efficiency (η) and NPSHr, i.e. the NPSH required by the pump.
How pump characteristic curve is important for selection of any suitable pump?
It is also important to check that the flow rate and head of the pump are within the required specifications, which are normally presented as the Pump Characteristic curves. These plots play an important role in understanding the region in which the pump needs to be operated thus ensuring the life of the pump.
How do you calculate pump characteristic curve?
The system characteristic is to be calculated, knowing the geometry of the system, and calculating Friction factors then Pressure Drop (system curve = differential static heads + friction losses). The higher the flow, the higher will be the pressure required.
What is the importance of the characteristic curve?
I-V characteristic curves are generally used as a tool to determine and understand the basic parameters of a component or device and which can also be used to mathematically model its behaviour within an electronic circuit.
Why is the characteristic curve important?
What is HQ curve?
The H-Q curve is one in which the difference head (H) progressively falls with the increase in flow rate Q, as shown in figure 1. …
How do you choose pump based on pump curve?
Look at the left side of the curve and you will see a label HEAD – FT and numbers starting with 0 and increasing as you move up the chart. This is the pressure that the pump is capable of producing, measured in feet of head (not PSI!) The bottom of the curve is labeled US GPM. This is the flow that the pump produces.
What are solid characteristics?
Solids are defined by the following characteristics: Definite shape (rigid) Definite volume. Particles vibrate around fixed axes.
Which of the following is an example of attribute characteristics?
An attribute is defined as a quality or characteristic of a person, place, or thing. Real life individuals and fictional characters possess various attributes. For example, someone might be labeled beautiful, charming, funny, or intelligent.
What’s the significance of pump characteristic curves?
The pump characteristic curve can be used effectively to select a suitable pump for the duty that is required and it can also be used to establish the capacity of a pipeline system as a function of the speed of a pump that already exists in the pipeline.
What do you understand by characteristics curves of a pump?
A pump curve is a graphical representation of the performance characteristics of a pump. A pump curve provides a wealth of information regarding the performance capabilities of a pump. Information is plotted on an x-y graph where the x-axis is measured in units of flow and the y-axis is measured in units of head, power, and NPSHr.
How to read a pump curve?
Head & Flow. The first piece of information provided by a pump curve is the flow that the pump will develop at any given…
What are the characteristics of centrifugal pump?
Pump Terms. Suction lift exists when the source of supply is below the centerline of the pump.