Line Supports

What is the function of line supports in overhead lines?

• a) Provide electrical insulation
• b) Support the conductor
• c) Both A and B
• d) None of the above

What is the most commonly used material for line supports in overhead lines?

• a) Steel
• b) Aluminum
• c) Concrete
• d) Wood

If a 220 kV transmission line requires a support height of 18 meters, what is the minimum height required for a 132 kV transmission line in the same area?

• a) 12 meters
• b) 14 meters
• c) 16 meters
• d) 18 meters

What are the factors to be considered while selecting line supports for an overhead line?

• a) Load on the conductor, wind and ice loading, and span length
• b) Voltage level and conductor material
• c) Weather conditions and temperature
• d) None of the above

What are the advantages and disadvantages of using wood as a material for line supports in overhead lines?

• a) Advantages: low cost, easily available; Disadvantages: low strength, susceptible to decay
• b) Advantages: high strength, resistant to decay; Disadvantages: high cost, difficult to transport
• c) Advantages: resistant to decay, low cost; Disadvantages: low strength, difficult to install
• d) None of the above