Fundamentals of Electrical Engineering (BEE101) AKTU previous year questions 2022–2026
Every Fundamentals of Electrical Engineering question from 8 AKTU papers, tagged by unit, topic and marks. A few recent questions from each unit are listed below; open the page to filter by unit, topic or mark type.
Unit 1: DC Circuits – AKTU PYQs
- Define the following (i) dependent source (ii) linear element (iii) inductance (2 marks, 2026, Circuit Elements and Sources)
- State the Kirchhoff's Current Law (KCL) and Kirchhoff's Voltage Law (KVL). (2 marks, 2026, Kirchhoff's Laws)
- Determine the node voltages V1 and V2 for the network shown in figure. (7 marks, 2026, Mesh and Nodal Analysis)
- Use nodal analysis to determine the voltage across BC and the current in the 12 V source in figure. (7 marks, 2026, Mesh and Nodal Analysis)
- Determine the current in the 2 Ω resistor of the circuit by Mesh Analysis as shown in figure. [Circuit Diagram: A resistor network with a 60V source, 5Ω, 2Ω, 3Ω, 4Ω, 6Ω resistors, and a 20V source.] (7 marks, 2026, Mesh and Nodal Analysis)
Unit 2: Steady State Analysis of Single Phase AC Circuits – AKTU PYQs
- Define the expression for form factor and peak factor. (2 marks, 2026, AC Waveform Fundamentals)
- What is the condition for series resonance? What happens to the impedance of a series RLC circuit at resonance? (2 marks, 2026, Resonance in AC Circuits)
- A resistance of 75Ω, an inductance of 0.35H and a capacitance of 150μF are connected in series across a 230V, 50Hz supply. Calculate (i) the resultant current (ii) the phase angle between the resultant current and the supply voltage (iii) power factor of the circuit. (7 marks, 2026, Single Phase RLC Circuits)
- What is meant by bandwidth of a resonant circuit? Draw the resonance curve of a series RLC circuit and prove the bandwidth is ω₂ - ω₁ = R/L. (7 marks, 2026, Resonance in AC Circuits)
- Derive the relation between Phase Voltage & Line voltage for Star connected three phase supply system. A 3 phase, 400-volt supply is connected to a 3 phase star connected balanced load. The line current is 20 amps and the power consumed by the load is 12 KW. Calculate the phase impedance of the load, phase current and power factor. (7 marks, 2026, Three Phase Balanced Circuits)
Unit 3: Transformers – AKTU PYQs
- What are the main parts of a transformer and how does it work? (2 marks, 2026, Ideal and Practical Transformer)
- The following results were obtained on a 5 kVA, 2400/120V transformer: Open circuit test 120V, 9.65A, 396W instrument on l.v. side. Short circuit test 92V, 20.8A, 810W instrument on h.v. side. Determine: (i) the circuit constants (ii) efficiency at half load, 0.8 p.f. lagging (iii) regulation at 0.8 p.f. lagging (7 marks, 2026, Transformer Losses and Efficiency)
- Explain operating principle of transformer and derive the equation for induced emf in a two-winding transformer. Also discuss the term regulation and efficiency w.r.t. transformer. (7 marks, 2026, Ideal and Practical Transformer)
- The efficiency of a 400 kVA 1-ϕ transformer is 98.77%, when delivering full load at 0.8 p.f. and 99.13% at half of the full load and unity power factor. Calculate (i) Iron loss (ii) Full load copper loss. (7 marks, 2026, Transformer Losses and Efficiency)
- Draw the phasor diagram of practical transformer at no load condition. (2 marks, 2025, Ideal and Practical Transformer)
Unit 4: Electrical Machines – AKTU PYQs
- What is the basic principle of a DC motor? What is Back EMF Eb? (2 marks, 2026, DC Machines)
- A three phase induction motor has 6 poles and runs at 960 r.p.m. on full load, it is supplied from an alternator having 4 poles and running at 1500 rpm. Calculate the Full load Slip of the induction motor. (2 marks, 2026, Three Phase Induction Motor)
- How is a rotating magnetic field produced in a three phase induction motor? (7 marks, 2026, Three Phase Induction Motor)
- What are the applications of a DC motor? Discuss the factors influencing the selection of a DC motor. A 8 pole lap-wound DC generator has useful flux per pole 0.05 Wb, if the no load voltage at 400 rpm is 300V. Find the number of conductors on the armature periphery. (7 marks, 2026, DC Machines)
- (i) Why Single Phase Induction Motor is not Self Starting? (ii) What is Synchronous Machine? Also discuss the basic principle of synchronous machine. (7 marks, 2026, Three Phase Synchronous Machines)
Unit 5: Electrical Installations – AKTU PYQs
- Describe the importance of earthing in ensuring electrical safety and protecting equipment. (7 marks, 2026, Earthing and Lightning Protection)
- How does a fuse protect an electrical circuit? Also discuss the working of following: (i) ELCB (ii) MCCB (7 marks, 2026, Protective Switching Devices)
- (i) What is the fundamental difference between a wire and a cable? What is Bus-bar? (ii) What is a battery's fundamental principle? Also specific types of battery types. (7 marks, 2026, Wires Cables and Bus-bars)
- Explain briefly the SFU. (2 marks, 2025, Protective Switching Devices)
- What is Switch fuse unit (SFU)? (2 marks, 2025, Protective Switching Devices)