Mechanical Design of TL

What is the purpose of the shield wire in overhead lines?

• A. To provide a path for lightning
• B. To carry the load
• C. To connect the insulators
• D. To provide insulation

Which type of insulator is used for EHV transmission lines?

• A. Pin-type insulator

• B. Suspension insulator

• C. Both A and B

• D. None of above

Which of the following is not a material used for overhead line conductors?

• A. Aluminum
• B. Copper
• C. Steel
• D. Zinc

The conductors of the overhead lines are

• Stranded conductors

• Solid conductors

• Both solid and stranded

• None of the above

Overhead lines generally use-

• A.C.S.R. conductors

• Copper conductors

• Aluminum conductors

• Any of the above

Insulators are made of

• Porcelain

• Glass Composite

• Polymer

• Any of the above

Pin type insulator are mostly subjected to which type of mechanical stress?

• Compressive stress

• Tensile stress

• Both tensile and compressive stress

• Twisting stress

Suspension type insulator are subjected to ______________

• tensile and compressive stress

• compressive stress

• tensile stress

• depends on its use

Which of the following is the main field of application of pin type insulator?

• a) Distribution system

• b) Transmission system

• c) Transmission and distribution system

• d) EHV transmission system

Which of the following insulator is similar to pin type insulator?

• a) Suspension insulator

• b) Post insulator

• c) Strain insulator

• d) Shackle insulator