GTU · BE Electrical · Semester 5

GTU 3150911 Power System- II Old Question Papers & Solutions PDF

Official Gujarat Technological University (GTU) old question papers PDF (Regular & Remedial) and step-by-step solved questions for Power System- II across 2023 – 2026 examinations.

7 papers, 2023 – 202670 marks23 to pass2.5 hours
27 questions GTU asked more than onceAsked in all 4 papers: Explain the zero sequence impedance diagram of transformer for various connectionSee list

Exam papers

Most repeated questions

27 questions GTU set in two or more of 4 papers, most repeated first. Tap a year to open that paper at the question.

  1. Explain the zero sequence impedance diagram of transformer for various connection

    7 marksAsked in 4 of 4 papers

    Summer 2026 Q3c Summer 2025 Q3c OR Winter 2023 Q5b OR Summer 2023 Q4a

  2. What is harmful effect of lightning on a power system ? discuss the different types of lightning strokes ?

    7 marksAsked in 3 of 4 papers

    Summer 2026 Q4c OR Summer 2025 Q4c Summer 2023 Q5c OR

  3. Explain Reflection and Refraction of Travelling waves at a T-junction on transmission lines.

    7 marksAsked in 3 of 4 papers

    Summer 2026 Q5c Winter 2023 Q1c Summer 2023 Q5b OR

  4. Find the critical disruptive voltage and corona loss for a 3-phase line that is operating at 220 kV, 50 Hz frequency. The line has a conductor of 1.5 cm diameter arranged in a 3-meter delta connection. Assume air density of 1.05 and dielectric strength of air to be 21.1 kV/cm.

    7 marksSame type asked in 3 of 4 papers

    Summer 2025 Q4c OR Winter 2023 Q2c OR Summer 2023 Q4b OR

  5. Derive expression for sending end voltage and current for long transmission line using rigorous method

    7 marksAsked in 3 of 4 papers

    Summer 2026 Q1c Winter 2023 Q3c OR Summer 2023 Q2c

  6. Write a short note on selection of circuit breaker.

    4 marksAsked in 3 of 4 papers

    Summer 2026 Q3b Winter 2023 Q4b OR Summer 2023 Q3b

  7. What is insulation coordination ? define and explain in brief BIL.

    4 marksAsked in 3 of 4 papers

    Summer 2026 Q4b Summer 2025 Q4a Winter 2023 Q1a

  8. Explain factors affecting the corona.

    4 marksAsked in 3 of 4 papers

    Summer 2026 Q5b Summer 2025 Q4b OR Winter 2023 Q2c

  9. Discuss Ferranti Effect

    3 marksAsked in 3 of 4 papers

    Summer 2026 Q2a Winter 2023 Q3a OR Summer 2023 Q3a OR

  10. Write short note on Arcing Ground Effect

    3 marksAsked in 3 of 4 papers

    Summer 2026 Q5a Winter 2023 Q1b Summer 2023 Q5c

Show 17 more repeated questionsHide the 17 more
  1. Using appropriate connection of sequence networks , derive the equation for line to line fault in power system.

    7 marksAsked in 2 of 4 papers

    Summer 2026 Q4c Winter 2023 Q4c OR

  2. Give the analysis of double line to ground fault considering the effect of fault impedance.

    7 marksAsked in 2 of 4 papers

    Summer 2025 Q3c Summer 2023 Q4c

  3. Explain Nominal T and Nominal ∏ method for analysis of medium transmission line

    7 marksAsked in 2 of 4 papers

    Summer 2026 Q2c OR Winter 2023 Q3c

  4. Calculate the sub transient fault current in each phase for a dead short circuit on one phase to ground at bus Q for the system shown in Fig. 1 Fig. 1 All reactance are in p.u. on generator base.

    7 marksSame type asked in 2 of 4 papers

    Winter 2023 Q4c Summer 2023 Q3c Summer 2023 Q4c OR

  5. A 3-phase, 11kV, 15 km length, transmission line supplying a load of 850 kW at 0.8 power factor lagging, has resistance (R)= 0.45 Ω/km and reactance

    7 marksSame type asked in 2 of 4 papers

    Summer 2025 Q1c Summer 2023 Q1b Summer 2023 Q4b

  6. Find the symmetrical components for the given three phase currents

    7 marksSame type asked in 2 of 4 papers

    Winter 2023 Q5c OR Summer 2023 Q2b

  7. Explain in detail sub transient , transient and steady sate reactance.

    4 marksAsked in 2 of 4 papers

    Summer 2026 Q3b OR Summer 2025 Q2a

  8. Derive the necessary equations to obtain symmetrical components from the phase quantities.

    4 marksAsked in 2 of 4 papers

    Summer 2025 Q3b OR Winter 2023 Q5b

  9. Explain in brief the different methods of voltage control employed in power systems.

    4 marksAsked in 2 of 4 papers

    Summer 2025 Q4b Summer 2023 Q5b

  10. What is pu system ? discuss its advantages

    3 marksAsked in 2 of 4 papers

    Summer 2026 Q1a Summer 2025 Q1a

  11. Show how Zbus gets modified when branch Zb is added from new bus to old bus.

    3 marksAsked in 2 of 4 papers

    Summer 2026 Q3a OR Summer 2023 Q3c OR

  12. Explain the following terms with reference to corona :

    3 marksAsked in 2 of 4 papers

    Summer 2026 Q5a OR Winter 2023 Q2b

  13. What are the symmetrical components ? Explain in brief.

    3 marksAsked in 2 of 4 papers

    Summer 2026 Q3a Winter 2023 Q5a OR

  14. Show that symmetrical component transformation is power invariant.

    3 marksAsked in 2 of 4 papers

    Summer 2025 Q3a OR Summer 2023 Q3a

  15. What is a significance of zero sequence network ?

    3 marksAsked in 2 of 4 papers

    Summer 2026 Q4a OR Winter 2023 Q5c

  16. What is fault? Classify various types of fault conditions of power system. Give the significance of the fault impedance.

    3 marksAsked in 2 of 4 papers

    Summer 2025 Q3a Winter 2023 Q5a

  17. What is the difference between symmetrical and unsymmetrical faults?

    3 marksAsked in 2 of 4 papers

    Winter 2023 Q4a Summer 2023 Q2a

Which branches take this subject

GTU's syllabus lists 3150911 for 1 branch. One set of papers serves all of them.

Semester 5: 1 branch

Electrical Engineering

Other Semester 5 subjects

Common questions

Are these GTU 3150911 Power System- II papers valid for both Regular and Remedial exams?

Yes. Gujarat Technological University (GTU) follows the same 70-mark syllabus, exam blueprint, and 23-mark passing cutoff for both Regular and Remedial (ATKT/backlog) examinations. All 7 past exam sessions (2023 – 2026) serve as comprehensive preparation for either attempt.

How can I download GTU 3150911 Power System- II old question papers PDF?

You can download official GTU 3150911 original question paper PDFs directly from the table above with 1 click and zero deceptive ads or wait timers. Every paper also includes interactive online questions with AI study prompts.

What is the passing mark for GTU Power System- II (3150911)?

The external theory exam carries 70 marks. The minimum passing cutoff is 23 marks (33%). Exam duration is 2.5 hours.

What is the GTU exam pattern for 3150911?

The examination contains 5 main questions of 14 marks each, totaling 70 marks. Questions 2 through 5 provide internal OR choices, typically split into 3-mark, 4-mark, and 7-mark questions.