B.TechSemester 52021-22Power System IKEE501
View PDFDownload

Power System I (KEE501) - AKTU Question Paper 2021-22

B.Tech · Semester 5 · Free PDF Download

This is the official AKTU Power System I Previous Year Question Paper for B.Tech Semester 5, academic session 2021-22. Published by Dr. A.P.J. Abdul Kalam Technical University (AKTU/UPTU), Lucknow. Free PDF download — no login required.

Course:B.Tech
Semester:Semester 5
Session:2021-22
University:AKTU / UPTU

Rate this paper

Questions Asked in 2021-22

Power System I (KEE501) — extracted question text

Section AAttempt all questions in brief. 2 x 10 = 20
  • a
    What is Demand factor? Why is it important?
  • b
    For the same maximum demand, if load factor is decreased, then what will be the cost of energy?
  • c
    What are the limitations of Kelvin law?
  • d
    What is Ferranti Effect?
  • e
    How are voltage distribution and the string efficiency affected by rain?
  • f
    What is the importance of sag in transmission line?
  • g
    Differentiate between GMD and GMR
  • h
    Why the effect of ground on the line capacitance can be neglected? i. Why single core cables are usually not provided with armouring. j. How do voids in the insulation cause breakdown of the cable?
Section BAttempt any three of the following: 10 x 3 = 30
  • a
    What are the conventional and non conventional sources of energy, Explain with examples
  • b
    Draw single line diagram of a Four-bus system having generator G1 connected to bus-1 through transformer T1, generator G2 connected to bus-2 through Transformer T2, Load A and Load B connected to bus-3 through transformer T3, Four synchronous motors M1 to M4 connected to bus-4 through Transformer T4, Transmission lines TL1, TL2, TL3 and TL4 connected between bus 1-2, 2-3, 3-4 and 4-1 respectively
  • c
    What are the main characteristics of an ideal insulator? Describe the main advantages and disadvantages of glass insulators. Explain rating and string efficiency of an insulator
  • d
    Derive expressions for the line-to-neutral capacitance and line-to-line capacitance of a single phase line
  • e
    Discuss the inter-sheath grading of cables. What are practical difficulties in the grading of cables
Section CAttempt any one part of the following: 10 x 1 = 10
  • a
    A generating station has a maximum demand of 35 MW, a load factor of 50 %
  • a
    plant capacity factor of 80 % and a plant use factor of 62 %. Find (i) the reserve capacity of the plant (ii) the daily energy produced and (iii) Maximum energy that could be produced daily if the plant while running as per schedule, were fully loaded
  • b
    Define and explain the importance of the following terms in generation: (i) connected Load (ii) Maximum Demand (iii) Diversity Factor (iv) Average Load
  • a
    Explain difference between skin effect and proximity effect. What is the percentage saving in copper feeder if the line voltage in a 2-wire d.c. system is raised from 220 V to 450 V for the same power transmitted over the same distance and having the same power loss?
  • b
    Derive the A, B, C, D constants for the transmission line represented by nominal T section and Draw its phasor diagram
  • a
    What do you understand by vibration dampers in overhead transmission line? Describe the different types of dampers used
  • b
    An overhead line at a river crossing is supported from two towers of heights 30 meters and 90 meters above water level with a span of 300 meters. The weight of the conductor is 1 kg/meter and the working tension is 2000 kg. Determine the clearance between the conductor and the water level midway between the towers
  • a
    Starting from first principles, derive the expression for inductance of a 3-phase unsymmetrical spaced transposed transmission line
  • b
    The three conductors of a 3-phase line are arranged at the corners of a triangle of sides 2m, 2.5m and 4.5m. Calculate the inductance per km of the line when the conductors are regularly transposed. The diameter of each conductor is 1.24
  • a
    Show that the most economical size of conductor in a single core cable is obtained when radius of cable sheath (R) equals e.r. where e is the base of radius of conductor. Explain dielectric loss
  • b
    Find the most economical diameter of a single core cable to be used on 66 KV, 3 phase system. If the peak permissible stress is not to exceed 50 KV/m. Also find overall diameter

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.

Power System I — Other Year Papers

AKTU Power System I PYQs from other sessions

Power System I2022-23Power System I2023-24Power System I2024-25

More B.Tech Semester 5 (2021-22) Papers

Other subjects from same semester and session

Advance Welding2021-22Ic Engine Fuel And Lubrication2021-22Application Of Soft Computing2021-22Optical Communication2021-22Web Technology2021-22Vlsi Technology2021-22Heat And Mass Transfer2021-22Compiler Design2021-22
View all B.Tech Semester 5 2021-22 papers →

Syllabus & More PYQs

Paper solve karne se pehle unit-wise syllabus dekh lo

📘 Power System-I — Unit-wise SyllabusBEE501AKTU 3rd Year SyllabusAKTU 3rd Year PYQs — All BranchesELECTRICAL 3rd Year SyllabusEEE 3rd Year SyllabusELECTRICAL COMPUTER ENGG 3rd Year Syllabus