Power System Operation & Control (PSOC) SPPU Endsem Question Paper Nov 2025
All 8 questions from this SPPU endsem paper, as printed. Read them here or open the PDF.
- Subject code
- 403141
- Pattern
- 2019 pattern
- Exam
- Endsem
- Session
- Nov 2025
- Max. marks
- 70
- Time
- 2½ Hours
- Semester
- VII
- Paper code
- [6584]-114
Printed for: B.E. (Electrical Engineering)
Instructions to the candidates
- Solve Q.1 or Q.2, Q.3 or Q.4, Q.5 or Q.6, Q.7 or Q.8.
- Figures to the right indicate full marks.
- Neat diagrams must be drawn wherever necessary.
- Assume suitable additional data is necessary.
- Use of non-programmable calculator is allowed.
Questions
Q1
- a)[4]
Draw and explain the working of speed governor system of turbo generator.
- b)[6]
Obtain the generator model, turbine model and power system model of single area load frequency control.
Also asked:May 2025
- c)[8]
Explain the block diagram and frequency response of the proportional plus integral controller in the single area load frequency control.
Also asked:Nov 2022
OR- a)
Q2
- a)[4]
Write the short note and necessity of automatic generation control (AGC).
Also asked:Nov 2023
- b)[6]
Explain: i) Area Control Error (ACE) in single area load frequency control ii) Area Control Error (ACE) in two area load frequency control.
- c)[8]
With the neat block diagram, explain two areas of load frequency control.
- a)
Q3
- a)[3]
Explain the concept of cost curve of thermal unit.
- b)[6]
Explain the dynamic programming method used for unit commitment.
Also asked:May 2025
- c)[8]
Explain Lagrange multiplier method used for economic load dispatch without transmission loss and no constraints on generation limit, while meeting load. 2
Also asked:May 2023
OR- a)
Q4
- a)[3]
What is the need for a unit commitment study in the power system? Explain.
- b)[6]
State the various methods for the unit commitment. Hence, explain the ‘priority list method’ for unit commitment.
- c)[8]
This part has equations that don’t show as text. Open the PDF to read it.
- a)
Q5
- a)[4]
What is the interconnection of the power system? State its advantages.
- b)[6]
Explain in detail-Capacity Interchange.
- c)[8]
What are the criteria of applying capacity interchange, diversity interchange, inadvertent interchange between interconnected utilities.
OR- a)
Q6
- a)[4]
Explain in detail: Interchange evaluation with unit commitment.
- b)[6]
Explain the following. i) Emergency power interchange ii) Energy banking.
- c)[8]
Explain the concept of a power pool in energy control. State and explain the advantages associated with a power pool? Also, discuss constraints related to the power pool.
- a)
Q7
- a)[4]
What are the effects of voltage instability on the power system? Explain in detail.
- b)[6]
Give the detailed classification of the voltage stability based on the time frame and based on nature of the disturbance.
- c)[7]
Derive the expression of the power-voltage relationship for drawing the PV curve in detail and hence draw the PV curve with showing stable-unstable region.
OR- a)
Q8
- a)[4]
- b)[6]
Explain the following voltage stability indices with their formula i) Fast Voltage Stability Index (FVSI) ii) Line Stability Index (Lmn) iii) Line stability factor (LQP)
Also asked:Nov 2022
- c)[7]
State the procedure to draw the QV curve. Hence, draw the QV curve with showing stable-unstable regions. … … …