First Year General

24 July 2026

🚀GTU Physics Previous Year Questions (PYQs)

📖 Previous Year Questions ko solve karke concepts ko strong banao aur exam me confidence ke saath score karo. Important PYQs, Detailed Solutions, Smart Revision aur Exam-Oriented Preparation — sab kuch sirf Student Sathidar par! 💯🎯

📚 BEE – Most Important Topics

Basic Electrical Engineering · GTU Exam Focus · Student Sathidar

🎯 97/119 marks (Summer 2022) from these topics

Chapter 1

⚡ DC Circuits

Theory Kirchhoff's Current Law (KCL) & Voltage Law (KVL) Q.1-b [4 marks]

Theory Star-Delta Transformation — Relation between star and delta networks.

Theory Superposition Theorem — Theory and numerical. Q.2-a [3 marks]

Theory Thevenin's Theorem — Theory and numerical.

Theory Norton's Theorem — Theory and numerical. Q.2-b [4 marks]

Theory Time-Domain Analysis — First-order RL and RC circuits. Q.2-c [7 marks]

Theory Important Definitions:

Waveform — Shape of signal

Cycle — One complete repetition

Instantaneous value — Value at any instant

Peak / Crest / Maximum value — Maximum amplitude

Average value — Mean over one cycle

RMS value — Root mean square value

Frequency — Cycles per second (Hz)

Time period — Time for one cycle

Power factor — cos φ

Active power — P = VI cos φ

Reactive power — Q = VI sin φ

Apparent power — S = VI

Peak / Crest factor — Peak / RMS

Form factor — RMS / Average

Phase difference — Phase angle between V & I

Q.1-c [7 marks] · Q.3-b [4 marks]

Chapter 2

🌀 AC Circuits

Theory Definitions:

Phase voltage — Voltage across each phase

Line voltage — Voltage between lines

Phase current — Current through each phase

Line current — Current through each line

Phase sequence — Order of phase voltages

Balanced / Unbalanced system — Equal / Unequal phase voltages

Balanced / Unbalanced load — Equal / Unequal impedances

Theory Relation between Line & Phase Quantities

• Balanced Star Connection: V_L = √3 × V_ph | I_L = I_ph

• Balanced Delta Connection: V_L = V_ph | I_L = √3 × I_ph

Q.3-c [7 marks]

Theory Two Wattmeter Method — Measurement of power in balanced three-phase circuit. Q.3-a [3 marks]

Chapter 3

🔋 Transformers

Theory B-H Curve & Magnetic Hysteresis — of magnetic materials.

Theory Single-Phase Transformer — Construction & working.

Theory EMF Equation — E = 4.44 × f × φ_m × N Q.4-a [3 marks]

Theory Core Type vs Shell Type — Construction differences.

Theory Three-Phase Transformer Connections — Types & applications.

Theory Auto-Transformer — Construction, working & applications. Q.4-a [3 marks]

Chapter 4

⚙️ Electrical Machines

Theory Rotating Magnetic Field — Concept & generation.

Theory Squirrel-Cage Induction Motor — Construction & working. Q.4-b [4 marks]

Theory Slip-Ring Induction Motor — Construction & working. Q.4-b [4 marks]

Theory Single-Phase Induction Motor — Types & working.

Theory Parts of DC Motor — Armature, field, commutator, brushes, etc.

Theory Separately Excited DC Motor — Characteristics & working.

Theory Alternator / Synchronous Generator — Construction & working. Q.4-c [7 marks]

Chapter 5

🔌 Electrical Installations

Theory Fuse — Working & types. Q.5-a [3 marks]

Theory Miniature Circuit Breaker (MCB) — Working & applications. Q.5-a [3 marks]

Theory Earth Leakage Circuit Breaker (ELCB) — Working & types.

Theory Cables — Classification & construction.

Theory Types of Earthing — Plate, pipe, strip, etc.

Theory Lead Acid Battery — Construction, working & applications.

Num Calculation of Energy — Energy = Power × Time (kWh). Q.5-c [7 marks]

Num Power Factor — cos φ = P / S. Q.5-c [7 marks]

⭐

🧮 Important Numerical

Imp Wheatstone Bridge — For the Wheatstone bridge diagram shown in Figure, obtain the current flowing through the 20Ω resistance using Thevenin's equivalent network. GTU Summer 2020 · Q.2-c [7 marks]

⚡ Student Sathidar · BEE Most Important Topics · All Chapters Covered
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