Transmission And Distribution

Single phase ✘ Three-phase three wire ✘ Three-phase four wire ✘ None of the above ✔

Lead ✘ Paper ✘ Rubber ✘ None of the above ✔

Aluminium ✘ Steel ✘ Brass ✘ Copper ✔

Ring bus-bar scheme ✘ Single bus-bar scheme ✘ Breaker and a half scheme ✘ Main and transfer scheme ✔

6.6 kV (r.m.s. value)/cm ✘ 11 kV (r.m.s. value)/cm ✘ 22 kV (maximum value)/cm ✘ 30 kV (maximum value)/cm ✔

Specific volume ✘ Electrical conductivity ✘ Coefficient of linear expansion ✘ Resistance per unit length for same cross-section ✔

A long line ✘ A medium line ✘ A short line ✘ Any of the above ✔

Primary winding ✘ Secondary winding ✘ High voltage winding ✘ Any of the above ✔

Stay wire ✘ Earth wire ✘ Structural components ✘ All of the above ✔

Short transmission lines ✘ Medium transmission lines ✘ Long transmission lines ✘ Medium as well as long transmission lines ✔