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EndsemNov 20252019 patternFE

Basic Electrical Engineering (BEE) SPPU Endsem Question Paper Nov 2025

All 8 questions from this SPPU endsem paper, as printed. Read them here or open the PDF.

Open the PDFMost repeated BEE questions
Subject code
103004
Pattern
2019 pattern
Exam
Endsem
Session
Nov 2025
Max. marks
70
Time
2½ Hours
Semester
I/II
Paper code
[6581]-1905

Printed for: F.E. (All Branches)

Instructions to the candidates

  1. Solve Q.1 or Q.2; Q.3 or Q.4; Q.5 or Q.6; Q.7or Q.8.
  2. Figures to the right indicate full marks.
  3. Neat diagrams must be drawn wherever necessary.
  4. Assume suitable additional data, if necessary.
  5. Use of non-programmable calculator is allowed.

Questions

  1. Q1

    1. a)

      Define admittance. State its units. Express admittance in rectangular & polar form.

      [4]
    2. b)

      This part has equations that don’t show as text. Open the PDF to read it.

      [6]
    3. c)

      A series R-L-C circuit has resistance of 50 ohms, inductance of 0.1 H and capacitance of 50 micro farads connected across single phase 230 V, 50 Hz AC supply. Calculate: i) Inductive reactance ii) Capacitive reactance iii) Impedance iv) Current drawn by circuit v) Power factor of the circuit vi) Active & Reactive power consumed by the circuit. 2

      Also asked:Jan 2026 ·May 2023

      [8]

  2. Q2

    1. a)

      Draw power triangle for R-L series circuit. Define active power and state its unit.

      [4]
    2. b)

      Derive the expression for resonant frequency in case of series RLC a c circuit. Draw phasor diagram.

      Also asked:May 2024 ·Nov 2023

      [6]
    3. c)

      A series RC circuit consisting of a resistance of 50 ohm and capacitance of 100 micro farad. It is supplied by 1-ph 230 V, 50 Hz AC supply. Calculate: i) Capacitive reactance ii) Impedance of the circuit iii) Current through the circuit iv) Voltage across resistance v) Voltage across capacitance vi) Power factor of circuit vii) Power consumed by circuit. Also draw a neat phasor diagram

      [8]

  3. Q3

    1. a)

      Define : i) Phase sequence ii) Balanced load iii) Unbalanced load

      Also asked:May 2023

      [3]
    2. b)

      Derive emf equation of a single phase transformer.

      Also asked:Jan 2026 ·May 2025 ·May 2024 ·Nov 2023 ·May 2023

      [6]
    3. c)

      Three identical impedances each of 6 +j 8 are connected in star across 3 phase 400 V 50 Hz supply. Determine: i) Phase current ii) Line current iii) Line & phase voltage iv) 3-phase active, reactive and apparent power.

      Also asked:May 2023

      [8]

  4. Q4

    1. a)

      State the relation between i) Phase voltage and line voltage ii) Phase current and line current in case of balanced delta connected 3-phase load. Write down the expression for 3-phase active power.

      [3]
    2. b)

      Differentiate core type & shell type transformer construction. (any 6 points).

      [6]
    3. c)

      A 25 kVA, 50 Hz single phase transformer has iron loss and full load copper loss of 350 watts and 400 watts respectively. Calculate its efficiency at : i) 50 % of full load, at unity power factor and ii) 75 % of full load at 0.8 lagging power factor. 3

      [8]

  5. Q5

    1. a)

      Explain active & passive networks with respect to D C resistive network.

      [4]
    2. b)

      Derive the expression to convert given delta connected resistances into equivalent star connected resistances.

      [6]
    3. c)

      This part has equations that don’t show as text. Open the PDF to read it.

      [8]

  6. Q6

    1. a)

      State and explain Kirchhoff’s laws.

      [4]
    2. b)

      Apply Superposition theorem to calculate current flowing in 4 ohms resistance for the network shown below in Fig. 6b

      [6]
    3. c)

      Determine the current in 8 ohms resistance connected across A and B by Thevenins theorem ( Ref. Fig -6c). 4

      [8]

  7. Q7

    1. a)

      What are the indications of a fully charged lead acid battery?

      [3]
    2. b)

      This part has equations that don’t show as text. Open the PDF to read it.

      [6]
    3. c)

      An electric pump lifts 1.2 m 3 of water per minute to a height of 15 meters. The overall efficiency of pump & motor is 60%. Calculate the input power. If the pump is used 4 hours daily, calculate energy consumption for a month of 30 days at the rate of Rs. 5 per unit.

      Also asked:May 2024

      [8]

  8. Q8

    1. a)

      State any three applications of Li Ion battery.

      [3]
    2. b)

      A single core Copper cable has conductor diameter of 3 cm & insulation thickness of 2 cm. The resistivity of copper & insulation is 1.73×10 –8 ohm meter & 9×10 12 ohm meter respectively. Determine: i) Resistance of conductor & ii) Insulation resistance of the cable for 150 m length.

      [6]
    3. c)

      Explain with neat sketch the construction and working of a lead acid battery and state it’s any two applications. eeee

      Also asked:May 2025 ·Nov 2023

      [8]