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Galvanized steel wire is usually used as
Stay wire
Earth wire
Structural components
All of the above
All of the above
Galvanized steel wire is steel coated with a layer of zinc to prevent corrosion, making it highly durable for outdoor environmental conditions. Due to its superior mechanical strength and resistance to atmospheric oxidation, it is widely utilized in various electrical and structural applications where longevity and load-bearing capacity are essential.
Galvanized steel wire is steel coated with a layer of zinc to prevent corrosion, making it highly durable for outdoor environmental conditions. Due to its superior mechanical strength and resistance to atmospheric oxidation, it is widely utilized in various electrical and structural applications where longevity and load-bearing capacity are essential.
RcorrтАЛтИЭtZnтАЛ1тАЛ тАФ The corrosion resistance is proportional to the thickness of the zinc coating (tZnтАЛ).
The process of galvanization involves applying a protective zinc coating to steel, which serves as a sacrificial anode. Even if the coating is slightly scratched, the zinc corrodes in preference to the steel, providing cathodic protection. This mechanism ensures that the structural integrity of the steel wire is maintained even in harsh or humid conditions.
Galvanization typically uses the hot-dip process to provide a thick, uniform protective layer.
Stay wires use galvanized steel due to high tensile strength requirements for supporting poles.
Earth wires benefit from the conductivity of the steel core combined with the corrosion resistance of the zinc surface.
Structural components like transmission tower members are galvanized to ensure a service life of several decades.
High tensile strength
Excellent resistance to atmospheric corrosion
Low maintenance cost over time
Zinc coating can be damaged by mechanical impact or abrasion
Heavier weight compared to aluminum-based conductors
Overhead line transmission pole stays
Grounding systems for substations
Support structures for telecommunications and power towers
The standard for galvanization in India is often governed by IS 209 (for Zinc) and IS 2629 (for recommended practice).
Option B (Earth wire) is correct because galvanized steel provides the necessary strength to survive fault currents and mechanical tension.
D is correct тАФ Galvanized steel wire combines high mechanical strength with essential corrosion resistance, making it suitable for all specified applications.
In transmission line design, always remember that galvanized steel is chosen for mechanical support (stays), whereas materials like ACSR (Aluminum Conductor Steel Reinforced) are chosen for current-carrying capacity.