Basic Power Systems — Summer 2018

Discuss disadvantage of low power factor.

List the advantages and disadvantages of Nuclear power station.

Discuss the importance of power factor improvement. Derive the expression of most economical power factor.

Define Corona. List factors affecting Corona.

List out main components of overhead transmission line with its function.

Discuss the advantages and disadvantages of (i) pin-type insulator (ii) suspension type insulators.

Discuss Main Components of Overhead Lines.

Explain proximity effect in ac supply system.

Explain end condenser method for medium transmission line.

Derive the equation of an inductance of a conductor and loop inductance for single-phase two wire line.

What do you understand by long transmission line?

What is the effect of load power factor on regulation of a transmission line?

List the methods for solution of medium transmission lines. Explain nominal T method.

Explain various methods to improving string efficiency.

Explain types of DC links in brief.

Explain the sending end circle diagram.

Explain voltage transformer earthing.

Discuss advantages of HVDC transmission system.

Draw the arrangement of main components of HVDC transmission system. Explain it in detail.

What is power factor? Draw and explain power triangle.

Define the grounding and explain solid grounding with diagram.

What is reactance grounding? What are its advantages and disadvantages?

Explain the Ferranti effect.

Define Sag. Derive the equation of sag, when supports are at equal level.

Classify Sub-station. Explain it in detail.