A. increase
B. decrease
C. remains same
D. none of the above
Answer:
Explanation:
In a transmission line, sag is defined as the vertical difference in level between points of support (most commonly transmission towers) and the lowest point of the conductor.
Where, l = length of the conductor
w = weight of the conductor
T = tension
Therefore, by increasing of temperature, the length of the conductor will increase and this will increases the sag.
Tension is inversely proportional to sag.
Sag S ∝ 1/T
As sag increases, tension will decrease.
Most Asked Electrical Interview Questions:
What is Auto-Recloser In Transmission System ? How its Works ?
What is Aviation Light ? Why it is used ?