TRANSMISSION AND DISTRIBUTION

                                                                               UNIT-I

                                                                              PART-A     

1.write a note on typical transmission and disribution scheme?

2.state the advantage of high voltage transmission?

3.what are the limitations of increasing the transmission voltage level to high value?

4.what is ring main distribution system?

5.state any 2 advantges of DC system over AC system?

6.write a note on ring main distributor with an inter connector?

 7. what are the objectives of HVDC?

8.   List HVAC based devices.

9. what are the types of DC SYSTEMS?

10. what are the differences between transmission and distribution?

                                                          

PART-B

1 .draw and explain the structure of electric power system.

2. explain briefly the types of AC distribution schemes with neat diagrams.

3. List out the advantages and disadvantages of AC and DC system.

4.What are the factors affecting EHVAC transmission.

5. Explain the following components of distribution

1.substation

2.feeder

3.distributor

4.distribution substation

5.service  mains

6. what are the differences between AC transmission and DC transmission?

7. Explain the various types of DC distribution schemes.

8.With neat diagrams explain the types of HVDC systems.

9.Write the advantages and disadvantages of EHVAV and HVDC systems.

10. Draw and explain 3phase AC wire distribution

                                                                   

                                                                   

                                                                         UNIT-V

                         SUBSTATION GROUNDING SYSTEM AND DISTRIBUTION SYSTEM

                                                                   PART-A

1. What is substation?                                                                                              

2. What is earth resistance?

3.What are the classifications of substain according to service?

4.What are the types of transformer substations?

5. What are the factors  to be considered for busbar design?

6. What is neutral grounding or neutral earthing?

7. What are the equipments used in a transformer substation?

8. What are the different types of bus bar arrangements in substations?

9. What is bus bar?

 10.What are the materials mainly  used in busbars?

                                                                     PART-B

1.With a neat sketch explain double bus with double breaker and double bus with single beaker.state their advantages and disadvantages.

2.Explain the following

1 .neutral grounding

2. resistance grounding

3.Explain about the various types of substations.

4.Write short notes on

1.sub mains

2.stepped and tapered mains

5. Explain the substation bus schemes.

6. Write short notes on

1. bus bar arrangement in substation

2. grounding grids

7.1. explain the design principles of substation grounding system

   2.explain the equipments in a transformer substation.