B.TechSemester 62023-24Power System IiKEE601
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Power System Ii (KEE601) - AKTU Question Paper 2023-24

B.Tech · Semester 6 · Free PDF Download

This is the official AKTU Power System Ii Previous Year Question Paper for B.Tech Semester 6, academic session 2023-24. Published by Dr. A.P.J. Abdul Kalam Technical University (AKTU/UPTU), Lucknow. Free PDF download — no login required.

Course:B.Tech
Semester:Semester 6
Session:2023-24
University:AKTU / UPTU

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Questions Asked in 2023-24

Power System Ii (KEE601) — extracted question text · 100 marks · 3 Hours

Section AAttempt all q u e s t i o n s i n b r i e f .
  • a
    What is the need of sequence components? 02
  • b
    What are the advantages of per unit system? 02
  • c
    What do you understand by load flow analysis? 02
  • d
    Outline the need for slack bus? 02
  • e
    What is meant by voltage surge? 02
  • f
    What do you mean by characteris tic impedance loading? 02
  • g
    Discuss steady state and transient stability? 02
  • h
    What do you mean by sta bility limit? 02 i. Explain various types of faults. 02 j. Discuss the need power system protection? 02
Section BAttempt any three o f t h e f o l l o w i n g :
  • a
    Draw the per unit impedance & reactance diagram for the powe r system shown below. Neglect resistance and use a base of 50 MVA, 220 kV in 1 00 Ω line. The rating of generator, transformers and motor are shown in Fig. Generator 500 MVA 25 kV X" = 20 % Motor 200 MVA 11 kV X" = 30 % Transformer (Y-Y) 300 MVA 33Y / 220Y kV X = 15 % Transformer (Y-Δ) 300 MVA 11Δ / 220Y kV X = 15 %
  • b
    Develop and explain the loa d flow equation by Gauss- Siddle Method. 10
  • c
    Explain the Bewley’s Lattice diagram. Write a note on surge phenomenon. Define the protection against over voltages
  • d
    Explain equal area criterion for stability by taking a suita ble example of power system
  • e
    Explain the working principle of differential relay and deri ve its operational condition with a suitable diagra m. Why restraining coil is used in differential relay?
Section CAttempt any one p a r t o f t h e f o l l o w i n g :
  • a
    Two generators rated at 10 MVA, 13.2KV and 15MVA, 13.2KV, re spectively are connected in parallel to a bus. The bus feeds two motors ra ted at 8MVA and 12MVA respectively. The rated voltage of motors is 12.5 KV. The reactance of each generator is 15% and that of each motor 20% on its own rat ing. Assume 50MVA, 13.8KV base and draw reactance diagram
  • b
    Derive the relationship to determine the fault current for a single line to ground fault. Draw and equivalent net work showing the interconnection of sequence network to stimulate LG fault
  • a
    What is Newton-Raphson method? How it is applied for the sol ution of power flow equation?
  • b
    Define different types of buses in a power system. Find the bus admittance matrix for the given network in Fig
  • a
    A 300 KV, 5 μ Sec rectangular surge travels along the line t erminated by a capacitor of 1500pF. Determine the voltage across the capacitance and reflected voltage wave if the surge impedance loading of line is 300 ohm
  • b
    Deduce the general wave equations for a loss less transmissi on line for propagation of voltage and current wave
  • a
    Explain the swing equation for a machine connected to an inf inite bus. If a synchronous generator is of 100MVA have inertia constant of 20M J/MVA. Find the angular momentum
  • b
    Explain step by step method of s ystem stability with suitable diagrams. 10
  • a
    Explain in detail the operati on of an Overcurrent Relay and Distance Protection, accompanied by a neat diagram?
  • b
    Define following: (i) Recovery Voltage (ii) Active recovery Voltage (iii) Restriking Voltage (iv) RRRV

Question text is extracted from the official AKTU question paper PDF above. Check the original PDF for equations, diagrams and complete wording. Extracted: 2026-08-23.

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