Name of the College : DMI College OF Engineering
Department : Electrical And Electronics Engineering
Subject Code/ Name : EE2303 – Transmission and distribution
Degree : B.E
Sem : III/V
Website : dmice.ac.in
Document Type : Question Bank
Transmission and distribution : https://www.pdfquestion.in/uploads/dmice.ac.in/1638-EE2303.docx
DMICE Transmission & Distribution Question Paper
Part A Questions :
UNIT I
1.What is an electric power supply system?
2.Name any two FACTS controller devices
3.On what factors does the skin effect depend
Related : DMI College OF Engineering Crystal Physics B.E Question Bank : www.pdfquestion.in/2794.html
4. What is meant by ‘corona’? mention their effects
5. State the disadvantages of HVDC transmission
6.What are the factors affecting sag in the transmission line.
7. list out the advantages of high voltage AC transmission
8. What is meant by stringing chart
9. What is a feeder
10. Differentiate primary distribution and secondary distribution with the help of a diagram.
11. Name some HVDC systems in India
12. What is the level of voltage for HVDC transmission?
13. State the application of HVDC system
14. Define break even distance.
15. What are the different operating voltages used for generation, primary and secondary transmission in AC power supply systems in India?
16. What are different types of power plants.
17. What is the highest voltage level operational in India?
18.What is the function of DVR in a power system
19. what is the compensation provided by SVC
20. Name the Grids operational in India
UNIT II
21.Define Skin effect.
22. What is meant by proximity effect?
23. List out the advantages of double circuit lines.
24. Define – Self and mutual – G.M.D.
25. What is meant by inductive interference?
26. What is transposition of conductors
27.What is need of transposition
28.Define the term critical disruptive voltage
29.What are the advantages of using bundled conductors
30.What is bundling of conductors
31. Define unsymmetrical spacing.
32.Why does a transmission lines have resistance, inductance, and capacitance?
33. List the factors that governing the capacitance of a transmission line.
34. What is ACSR conductor?
35. What is fictitious conductor radius?
36. State the advantages of double circuit line over single circuit line.
37. What is Ferranti effect
38. Define symmetrical spacing.
39.Differentiate the stranded conductor and bundled conductor.
40.What is multi strand conductor and give two advantage of it.
Part B Questions :
1.Compare the HVDC transmission with EHVAC transmission in the following respects
Economics of transmission
Reliability
Technical performance
2.Draw and explain the structure of electrical power system
3.Discuss in detail the various equipments used in HVDC converter station
4.An over head line has a span of 336 m. the line is supported at a water crossing from two towers whose heights are 33.6 m and 29 m above water level. The weight of conductor is 8.33 N/m and tension in the conductor is not to exceed 3.34×104 N. Find
(i) clearance between the lowest point on the conductor and water
(ii) horizontal distance of this point from the lower support.
5. what are the various types of HVDC links? Explain them in detail (10)
Explain the voltage control of HVDC (6)
6. A transmission line conductor at a river crossing is supported from two towers at a height of 50 and 80 m above water level. The horizontal distance between the towers is 300 m. if the tension in the conductor is 2000 kg find the clearance between the conductor and water at a point midway between the towers. Weight of conductor/m = 0.844 kg. Derive the formula used.
7. a)Derive expressions for sag and tension in a power conductor strung between to supports at equal heights taking into account the wind and ice loading also.(8)
b)An overhead line has a span of 300m. The conductor diameter is 1.953 cm and the conductor weight is 0.844 kg/m. calculate the vertical sag when a wind pressure is 736 N/sq.m of projected area acts on conductor. The breaking strength of conductor is 77990 N and the conductor should not exceed half the breaking strength.
8. a)Compare power transmission using over head line and under ground cable. (8)
b) Draw a simple model of UPFC ? . (8)
9.Explain the detail types of FACTS controllers
10. a)Derive expressions for sag in a power conductor strung between to supports at unequal heights(8)
b) write short notes on SVC