Stringing chart represents a graph of-a)Tension - Temperatureb)Sag - ...
Stringing chart is basically a graph between Sag, Tension with Temperature. As we want low Tension and minimum sag in our conductor but that is not possible as sag is inversely proportional to tension. It is because low sag means a tight wire and high tension whereas a low tension means a loose wire and increased sag. Therefore, we make a compromise between two but if the case of temperature is considered and we draw a graph then that graph is called a Stringing chart.
As Temperature increases then sag will increase but sag is inversely proportional to Tension so Tension will decrease.
Hence, the correct option is (D)
Stringing chart represents a graph of-a)Tension - Temperatureb)Sag - ...
Stringing Chart Graph
The Stringing chart represents a graph of tension sag vs temperature, which is used in the electrical industry to determine the sag of overhead conductors. It is also known as a tension-temperature chart.
Tension vs Temperature
The graph shows the relationship between the tension and temperature of the conductor. The tension in the conductor varies with temperature due to the thermal expansion of the conductor. As the temperature increases, the conductor expands, which results in a decrease in tension. Hence, the graph shows a negative slope.
Sag vs Temperature
The sag of the conductor is the amount of droop in the conductor at a given temperature. The sag of the conductor is affected by the tension and temperature of the conductor. As the tension decreases, the sag of the conductor increases. Hence, the graph shows a positive slope.
Load vs Temperature
The load on the conductor also affects the sag of the conductor. As the load increases, the sag of the conductor increases. Hence, the graph shows an increasing trend with load.
Conclusion
The Stringing chart is a useful tool for determining the sag of overhead conductors. It helps in determining the tension in the conductor at a given temperature and load, which is essential for the safe and efficient operation of the electrical system.