Review Question from TDP

By which of the following method electric power may be transmitted from one location to another location?

• UnderGround System

• Overhead system

• Both 1 and 2

• None of the above

Which of the following are the constants of the transmission lines?

• Inductance Capacitance

• Resistance

• Conductance

• All of the above

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

The power factor of industrial loads is generally

• Unity

• Lagging

• Leading

• Any of the above

Insulators are made of

• Porcelain

• Glass Composite

• Polymer

• Any of the above

A 3-phase 4 wire system is commonly used on

• Primary transmission

• Secondary transmission

• Primary distribution

• Secondary distribution

Corona discharge occurs more in

• Humid Weather

• Hot weather

• Cold Weather

• Any of the above

By which of the following methods string efficiency can be improved?

• Using long cross arm

• Grading the insulator

• Using a guard ring

• Any of the above

When a conductor carries more current on the surface as compared to core, it is due to

• Corona

• Skin Depth

• Skin Effect

• Any of the above