BT-104 RGPV B.Tech
Basic Electrical & Electronics Engineering (BEEE)
Previous year papers and the official syllabus are free to read, no account needed.
Previous Year Papers
8 papers, latest Dec 2025
- BT-104 paper, Dec 2025
- BT-104 paper, Jun 2025
- BT-104 paper, Dec 2024
- BT-104 paper, Jun 2024
- BT-104 paper, Dec 2023
- BT-104 paper, Jun 2023
Syllabus, notes and important questions for BT-104
Syllabus units
Topics as the official RGPV syllabus lists them.
Unit 1 DC Circuits 11 topics
- Voltage and current sources
- Dependent and independent sources
- Units and dimensions
- Source conversion
- Ohm’s law
- Kirchhoff’s law
- Superposition theorem
- Thevenin’s theorem and its application for analysis of series and parallel resistive circuits excited by independent voltage sources
- Power and energy in DC circuits
- Mesh and nodal analysis
- Star‑Delta transformation
Unit 2 AC Circuits 11 topics
- Generation of sinusoidal AC voltage
- Average, RMS, form factor and peak factor of AC quantities
- Phasor concept
- Power factor concept
- Impedance and admittance concept
- Active, reactive and apparent power
- Analysis of R‑L, R‑C and R‑L‑C series and parallel circuits (1‑phase)
- Necessity and advantages of three‑phase systems
- Phase sequence and balanced/unbalanced supply and loads
- Relationship between line and phase values for balanced star and delta connections
- Power in balanced and unbalanced three‑phase systems and measurement techniques
Unit 3 Magnetic Circuits & Single Phase Transformer 15 topics
- Basic definitions of magnetic circuits
- Magnetisation characteristics of ferromagnetic materials
- Self‑inductance and mutual inductance
- Energy storage in linear magnetic systems
- Series connection of coils
- AC excitation of magnetic circuits
- Magnetic field produced by a current‑carrying conductor
- Force on a current‑carrying conductor
- Induced voltage and laws of electromagnetic induction
- Direction of induced e.m.f.
- General construction of a single‑phase transformer
- Working principle and e.m.f. equation of a transformer
- Equivalent circuit and phasor diagram
- Voltage regulation, losses and efficiency
- Open‑circuit and short‑circuit tests
Unit 4 Electrical Machines 8 topics
- Construction, classification and working principle of DC machine
- Construction, classification and working principle of induction machine
- Construction, classification and working principle of synchronous machine
- Working principle of three‑phase induction motor
- Slip concept in induction motors
- Torque‑slip characteristics of induction motors
- Types of losses in electrical machines
- Applications of DC, induction and synchronous machines
Unit 5 Basic Electronics 10 topics
- Number systems and conversion used in digital electronics
- De Morgan’s theorem
- Logic gates
- Half‑adder and full‑adder circuits
- RS flip‑flop and JK flip‑flop
- Introduction to semiconductors and diodes
- V‑I characteristics of diodes
- Bipolar junction transistor (BJT) operation
- Common‑collector, common‑base and common‑emitter transistor configurations
- Modes of operation of BJT
Exam insights
Counted from 6 past BT-104 papers.
Marks asked per paper, by unit
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Unit 1 D.C. Circuits 22 marks
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Unit 2 1- phase AC Circuits & 3-phase AC Circuits 26 marks
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Unit 3 Magnetic Circuits & Single phase transformer 22 marks
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Unit 4 Electrical Machines 21 marks
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Unit 5 Basic Electronics 21 marks
Average marks of the questions from each unit in one paper. You answer only some of them, so the total is more than the paper’s maximum.
Asked again and again
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Define RMS value, average value, form factor, peak factor and related alternating quantity terms, and give their values for a sinusoidal waveform.
Asked 5 times: 2025, 2024, 2023, 2022
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Explain Faraday's laws of electromagnetic induction.
Asked 3 times: 2025, 2024, 2023
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Use mesh analysis to determine mesh currents / branch current $I_0$ in the given DC network
Asked 3 times: 2025, 2023