(SEM V) THEORY EXAMINATION 2023-24 SENSOR AND INSTRUMENTATION TECHNOLOGIES FOR CIVIL ENGINEERING APPLICATIONS

Subject Code: KCE056

Subject Name: Sensor and Instrumentation Technologies for Civil Engineering Applications

Course: B.Tech (Semester V)

Maximum Marks: 100

Duration: 3 Hours

Exam Year: 2023–24

Sections: A, B, and C

SECTION A – Short Answer Questions (2 × 10 = 20 Marks)

Attempt all questions briefly.

a. What is a sensor?
b. What is the application of instrumentation technologies in civil engineering?
c. Write short notes on physical variables.
d. What is sensor selection?
e. What do you understand by data analysis?
f. What is sensor specificity?
g. Define piezometer.
h. Write short notes on most frequently occurring value.
i. What is analysis covering?
j. Explain frequency domain signal processing.

SECTION B – Medium-Length Questions (10 × 3 = 30 Marks)

Attempt any three of the following.

Write in detail about various types of sensors with their functions.

Describe the order and methodology for sensor installation.

Explain the need for frequency domain analysis and its principles.

Draw conclusions about physical processes based on analysis of sensor data.

Write short notes on:

(i) Time domain signal processing

(ii) Discrete signals

 SECTION C – Long / Analytical Questions (10 × 5 = 50 Marks)

Q3. Data Interpretation and Monitoring

a. Explain how to combine signals in a meaningful way to gain deeper insight into physical phenomena.
OR
b. Write short notes on:

(i) Approach to planning monitoring programs

(ii) Measurement uncertainty

Q4. Instrumentation and Data Handling

a. Explain the various types of instrumentation in detail.
OR
b. Write in detail about data reduction and data interpretation.

Q5. Installations and Signal Processing

a. Differentiate between permanent and temporary installations.
OR
b. Write in detail about Fourier Transform and Fast Fourier Transform (FFT).

Q6. Sensor Operations and Signal Analysis

a. Differentiate between types of sensors and their modes of operation and measurement.
OR
b. Explain the basic concepts in frequency domain signal processing and analysis.

Q7. Sensor Response and Applications

a. How will you predict the response of sensors to various inputs?
OR
b. Write short notes on:

(i) Strain gauge

(ii) Inclinometer

Key Topics to Prepare

 Fundamentals of Sensors and Instrumentation

Definition, characteristics, and classifications of sensors.

Sensor selection: accuracy, sensitivity, range, environment suitability.

Instrumentation applications in civil engineering — monitoring bridges, tunnels, dams, and soil movement.

 Signal Processing

Time domain vs frequency domain analysis.

Fourier Transform and FFT — frequency component analysis of signals.

Discrete signals and digital signal representation.

 Sensor Types

Temperature, strain, pressure, displacement, vibration, and humidity sensors.

Piezometers — pressure measurement in groundwater.

Strain gauges and inclinometers — stress, strain, and deformation measurement.

 Data Analysis and Monitoring

Data acquisition, filtering, reduction, and interpretation.

Planning monitoring programs and assessing measurement uncertainty.

Combining multiple sensor readings for reliable interpretation.

 Installation & Instrumentation

Permanent vs temporary installations.

Methodology of sensor placement — calibration, orientation, and maintenance.

Instrumentation for structural health monitoring, traffic systems, and hydrological studies.

 Study Tips

Revise basic definitions (sensor, data analysis, piezometer, FFT, etc.) for Section A.

Draw labeled diagrams — sensor setup, signal flow, piezometer arrangement, FFT process.

Understand formulas related to signal frequency and amplitude analysis.

Link to applications — explain how each sensor type helps in real-world civil engineering (e.g., load measurement on bridges).

Prepare short comparative notes — permanent vs temporary installations, time vs frequency domain analysis.