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InsemMar 20242019 patternSE Electrical

Power System Engineering-I SPPU Insem Question Paper Mar 2024

All 4 questions from this SPPU insem paper, as printed. Read them here or open the PDF.

Open the PDFMost repeated Power System Engineering-I questions
Subject code
203145
Pattern
2019 pattern
Exam
Insem
Session
Mar 2024
Max. marks
30
Time
1 Hour
Semester
IV
Paper code
[6268]-206

Printed for: S.E. (Electrical) (Insem)

Instructions to the candidates

  1. Answer Q1 or Q2, Q3 or Q4.
  2. Neat diagrams must be drawn wherever necessary.
  3. Figures to the right side indicate full marks.
  4. Assume Suitable data if necessary.

Questions

  1. Q1

    1. a)

      Define following factors associated with generating stations i) Load factor ii) Demand factor iii) Diversity factor

      [6]
    2. b)

      Write a short note on H.T and L.T consumers.

      [4]
    3. c)

      The load on a power plant on a typical day is Time Load (MW) 12-6 A.M 10 6-10 A.M 30 10 A.M-6 P.M 60 6-10PM 90 10PM-12AM 10 Plot daily load curve and load duration curve. Also find energy supplied by the plant in 24 hours.

      [5]

  2. Q2

    1. a)

      State the following statement are true or false i) Diversity factor is always greater than unity. ii) Area under the load duration curve can be used to calculate total number of units(kWh) generated. iii) Cost per unit generation is high in base load plant than the peak load plant. iv) Two-part tariff is mostly used for industrial load.

      [4]
    2. b)

      Write a short note on time of the day tariff.

      Also asked:Mar 2025

      [5]
    3. c)

      A generating station supplies different customer groups : Industrial consumers : 700 MW load Commercial consumers : 300 MW load Domestic customer : 200 MW load The maximum demand on station is 1000 MW and number of MWh generated per year is 50* 10 5 . Determine i) Diversity factor ii) Average load iii) Annual load factor

      [6]

  3. Q3

    1. a)

      Explain in short, the necessity of following equipment’s used in substation i) Bus bar ii) Isolator iii) Alternator iv) Control panel

      [8]
    2. b)

      Explain the meaning of grading of cables and list out different methods of grading

      [3]
    3. c)

      Find maximum and minimum stresses in the insulation of a single core cable working on a voltage of 33kV(rms) which has conductor diameter 1.2 cm and sheath inside diameter of 3.8 cm.

      [4]

  4. Q4

    1. a)

      Discuss the necessity of excitation system for alternators. Explain any one type of excitation system in detail with neat diagram.

      [6]
    2. b)

      Give the classification of underground cables.

      [4]
    3. c)

      This part has equations that don’t show as text. Open the PDF to read it.

      [5]