About this previous year paper
This question paper is designed for B.Tech (Semester III) students under the subject Electrical & Electronics Measurements (KEE-302).
It aims to evaluate the students’ understanding of electrical measuring instruments, bridges, transducers, CRO operations, and instrument transformers.
The paper is divided into three sections:
SECTION A – Short Answer Questions (20 Marks)
This section contains 10 compulsory questions, each carrying 2 marks.
These questions test the basic understanding of:
Primary vs Secondary instruments
Thermocouple working principle
Anderson & Hay Bridge concepts
CT, PT ratios & applications
CRO sweep generator
Lissajous figures
Primary vs Secondary transducers
Active & passive transducers
SECTION B – Descriptive / Analytical Questions (30 Marks)
Students must attempt any three questions, each carrying 10 marks.
This section focuses on:
Error calculation in series–parallel resistors
Hay’s bridge derivation & phasor diagram
Current transformer equivalent circuit
Types of electronic voltmeters and DC voltmeter working
Hall effect transducer: construction, working & applications
SECTION C – Long Answer / Application-Based Questions (50 Marks)
Students must attempt one question from each of the five subsections, each carrying 10 marks.
This section checks advanced knowledge in:
PMMC instrument working & torque equation
Electro-dynamometer operation
Schering and Maxwell’s Bridges
CT & PT errors
CRO block diagram & working
Spectrum analyzer working
Strain gauge analysis
Piezoelectric transducer characteristics
Overall Purpose of the Paper
The exam thoroughly evaluates the student's:
Conceptual understanding of measurement techniques
Practical approach towards electrical instrument applications
Problem-solving skills using bridge circuits and transformers
Knowledge of CRO, DVM, Hall effect, strain gauges, and piezoelectric sensors