Power Supply for Electric Traction Interview Questions:

Following are the below Power Supply for Electric Traction Interview Questions and Important Questions which is very useful for interviews and exams

1. What are the requirements that a current collector gear of electric vehicle should fulfil ?

2. Describe with a neat diagram the pantograph collector.

3. What are different types of current collectors? Give their merits and demerits.

4. Discuss and compare various arrangements of current collection used in electric traction.

5. Discuss different types of catenary construction for traction system.

6. Discuss the limitations of single catenary construction and explain some alternative construction to remove these limitations.

7. Describe with suitable diagram the compound catenary in overhead lines.

8. Describe a typical traction substation with the help of a sketch of substation equipment layout.

9. Discuss the location of substations with regard to ac and dc systems of electric traction.

10. Give layout of a traction substation and describe it.

11. What are the functions of dc traction substation ? What is the major requirement for dc substation ?

12. Discuss the various feeding and distributing systems used in electric traction.

13. State the various ‘statutory regulations’ that should be observed in cases of feeding and distributing systems for tramways. Why are such regulations imposed ?

14. Explain the working of a remote control centre. What are its advantages ? What is mimic diagram ?

15. Briefly discuss the salient design features of OHE (overhead equipment) giving suitable diagrams.

16. Differentiate between insulated and uninsulated overlaps. Also explain the importance of neutral section in OHE.

17. Explain the importance of neutral section in traction system

18. Explain why neutral section is provided in the OHE of ac traction system but not in dc traction system. What factors determine the span length of the OHE?

19. What is critical velocity, discuss its significance.

20. With the help of neat diagrams, briefly explain the following : (a) Pantograph (6) Negative booster (c) Interference effect of railway electrification on commu­nication circuits.

21. What steps can be taken to reduce the interference in the telecommunication circuits ? Explain the use of booster transformer.

22. In traction system employing the running rails as return conductors, describe measures and precautions that may be necessary to keep the voltage within reasonable limits.

23. Describe the negative booster for use on a traction system.

24. Explain with relevant diagram the necessity of using positive and negative boosters in dc electric traction.

25. Explain the functions of (i) feeder booster (ii) negative booster in an electric tramway system.

26. Draw and describe the complete connection diagram of a negative booster along with the motor starter set in a 650 V dc tramway line. If the potential at the point of connection is zero, show the distribution of current and voltage in the rail at least in two successive sections.

27. Discuss the protection of underground installation against corrosion due to railway electrification. Discuss the application of negative booster.

28. Write short notes on the following:

• • • • Comparison of various arrangements of current collection used in electric traction.
      • Conductor rail system.
      • Collector gear for overhead equipment.
      • Overhead collector gear employed on trams and electric trains.
      • Pantograph.
      • Methods of supporting overhead control contact wire equipment for electric tramways and railways.
      • Compound catenary.
      • Traction substations.
      • System of remote control.
      • Booster transformer.
      • Protection of underground installations against corrosion.
      • Phenomenon of electrolysis by earth currents.
      • Negative booster.