About this previous year paper
This question paper for BASIC ELECTRICAL ENGINEERING (KEE101T) is divided into three main sections — A, B, and C, and students must attempt all sections. The paper includes both theoretical and numerical problems covering core electrical engineering concepts.
SECTION A — Very Short Answer Questions (20 Marks)
Students must answer all 10 questions, each of 2 marks.
Topics include:
Use of form factor and peak factor
Speed ratio of synchronous motor
Difference between EMF & potential difference
Definition of power factor
Validity of superposition theorem for power
Need of commutator in DC generator
Why transformers are rated in VA
No-load phasor diagram of transformer
Torque–slip relationship in induction motor
Difference between synchronous & asynchronous motors
SECTION B — Short Answer / Numerical Questions (30 Marks)
Students must attempt any three questions.
Each question carries 10 marks.
Topics include:
EMF equation of transformer & condition for max efficiency
Important parts of DC motor + EMF calculation of DC generator
Thevenin’s theorem and finding current in a resistor
Nodal analysis for finding voltage & current
Superposition theorem to determine branch current
SECTION C — Long Answer / Numerical Questions (50 Marks)
Students must attempt ONE question from each group (Q3, Q4, Q5, Q6, Q7).
Each long question carries 10 marks.
Q3: Network Reduction / Norton Equivalent
Equivalent resistance by network reduction
Norton’s theorem to find output voltage
Q4: AC Circuits / Resonance / Impedance
RLC series circuit resonance, Q-factor, bandwidth
Parallel impedance calculation → admittance, current, power factor
Q5: Transformer Performance
No-load test parameters: core loss, magnetizing current, power factor
Principle of operation of single-phase transformer
Q6: DC Machines
EMF of DC generator (wave vs lap winding)
Full-load speed of DC shunt motor
Q7: AC Machines & Electrical Protection
Slip–torque characteristics of 3-phase induction motor
Finding slip & speed using rotor emf frequency
Short notes on MCB, MCCB, and battery characteristics