Download PTU (I.K.Gujral Punjab Technical University (IKGPTU)) B-Tech (Bachelor of Technology) (EEE)- Electrical And Electronics Engineering 2020 December 4th Sem Power Systems I (Transmission And Distribution) Previous Question Paper
Roll No.
Total No. of Pages : 02
Total No. of Questions : 18
B.Tech.(EE / Electrical & Electronics E ngg.) (2 012 Onwa rds)
B .Te ch (Electronic s & Elec trica l Engg./ Electrical Engineering & Industrial
Control) (201 2 to 201 7) (Sem.?4 )
POWER SYSTEMS-I
(Transmission & Distribution)
Subject Code : BTEE-405
M.Code : 57107
Time : 3 Hrs. Max. Marks : 60
INST RUCT IONS T O CANDIDAT ES :
1 .
SECT ION-A is COMPULSORY cons is ting of TEN questions carrying TWO marks
each.
2 .
SECT ION-B c ontains F IVE questions c arrying FIVE marks eac h and s tud ents
have to atte mpt any FOUR q ues tions.
3 .
SECT ION-C contains THREE questions carrying T EN marks e ach and s tudents
have to atte mpt any T WO questio ns.
SECTION-A
Answer briefly :
Q1. List out the limitation of high voltage power transmission.
Q2. What are the differences between transmission and distribution?
Q3. How inductance and capacitance of transmission line are affected by the spacing between
the conductors?
Q4. Define Transposition of a line.
Q5. How will you reduce corona loss?
Q6. Why skin effect is absent in DC systems?
Q7. Define Voltage Regulation of a transmission line.
Q8. What are the advantages of shunt compensation?
Q9. Define Stringing of Conductors.
Q10. What are the tests performed on insulators?
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SECTION-B
Q11. Derive the insulation resistance and capacitance of a single core cable.
Q12. Derive the necessary relations when a medium transmission line is represented by nominal
T circuit.
Q13. Discuss capacitance grading of underground cable.
Q14. Discuss briefly surge impedance loading and power angle curve.
Q15. Discuss different types of supporting structures for overhead transmission line.
SECTION-C
Q16. Calculate the GMR of conductors having seven strands each of 3mm radius.
Q17. Calculate the string efficiency of a string of three insulator units. The capacitance of each
unit to earth and line be 20% and 5% of the self-capacitance unit. Derive any formula that
you might be used.
Q18. Explain step by step procedure for construction of receiving-end transmission line. State
the ratings of phase modifiers.
NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any
page of Answer Sheet will lead to UMC against the Student.
2 | M-57107 (S2)-852
This post was last modified on 13 February 2021