(SEM II) THEORY EXAMINATION 2023-24 FUNDAMENTALS OF ELECTRICAL ENGINEERING

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This document contains the complete B.Tech (Semester II) Theory Examination Question Paper for Fundamentals of Electrical Engineering, Subject Code BEE201, for the academic session 2023–24. The question paper is designed to evaluate a student’s conceptual understanding and analytical ability across major areas of electrical engineering such as network analysis, AC/DC circuits, transformers, induction motors, synchronous machines, magnetic materials, earthing systems, and three-phase power calculations.

The paper is divided into three structured sections, each assessing a different level of electrical engineering skills—from basic definitions to detailed problem solving and long analytical explanations.

SECTION A — Short Conceptual Questions (2 marks each)

This section contains seven short-answer questions testing the fundamentals of electrical engineering. Topics include:

Unilateral & bilateral elements

Kirchhoff’s laws

Average power in capacitive circuits

Conditions for positive voltage regulation

Transformer efficiency and max-efficiency condition

Slip and rotor frequency in induction motors

Common electrical installation problems

These questions check quick recall and clarity of basic electrical principles.

SECTION B — Analytical & Numerical Questions (7 marks each)

Students must attempt any three questions. This section evaluates deeper analytical understanding, including:

Nodal analysis for branch current calculation

Derivation of dynamic impedance (ZD) of an RLC parallel circuit under resonance

Purpose and formation of the equivalent circuit of a transformer

Types of magnetic materials and their explanations

Earthing, neutral grounding, and importance of electrical safety

This section blends circuit theory, derivations, safety concepts, and electrical machine fundamentals.

SECTION C — Long Descriptive & Problem-Solving Questions (7 marks each)

Each sub-section contains numerical or theory-intensive questions such as:

Mesh analysis to find branch currents

Three-phase load calculations: line voltage, current, power factor, and total power

Transformer design & EMF equation derivation

Efficiency, equivalent impedance, copper loss, and supply current calculations

Resonance in series RLC circuits and expressions for:
– Cut-off frequencies
– Bandwidth
– Quality factor

Working principle of 3-phase synchronous motors

Torque–slip characteristics of induction motors

Cable construction, insulating layer, and metallic sheath functions

Lightning protection concepts

These questions test students’ understanding of real-world electrical systems and machine operations.

Sample Questions (1–2 from the paper)

“What is Kirchhoff’s law?” — A foundational question testing basic circuit theory.

“Explain the phenomenon of resonance in a series R-L-C circuit and derive expressions for cut-off frequencies, bandwidth, and quality factor.”
— A long analytical question assessing AC circuit understanding.

These examples represent the nature of conceptual and analytical questions throughout the paper.