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) — complete question paper · 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. Hindi translations are omitted — every question is printed in English in the original paper. Last verified: 2026-08-23.

Repeated Questions — KEE601

Questions that appeared in more than one session, found by comparing 2 years of Power System Ii papers (2022-23, 2023-24)

2x

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?

Appeared in: 2022-23 · 2023-24

2x

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

Appeared in: 2022-23 · 2023-24

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