2024 question paper
Sensors and Actuators
26 questions
Q1a. Which of the following is not a type of sensor error? (i) Gross error (ii) Random error (iii) Systematic error (iv) Analog error20242m
Unit 1.0: Introduction
View this question on its own page →Which of the following is not a type of sensor error?
(i) Gross error
(ii) Random error
(iii) Systematic error
(iv) Analog errorQ1b. A thermocouple is an example of which type of sensor? (i) Displacement sensor (ii) Pressure sensor (iii) Temperature sensor (iv) Proximity sensor20242m
Unit 1.0: Introduction
View this question on its own page →A thermocouple is an example of which type of sensor?
(i) Displacement sensor
(ii) Pressure sensor
(iii) Temperature sensor
(iv) Proximity sensorQ1c. What does hysteresis in a sensor mean? (i) The time delay between input and output (ii) Difference in output when input increases vs. decreases (iii) Output remains constant despite varying input (iv) Irregular fluctuations in sensor reading20242m
Unit 2.0: Static and Dynamic Characteristics of Sensors and Transducers
View this question on its own page →What does hysteresis in a sensor mean?
(i) The time delay between input and output
(ii) Difference in output when input increases vs. decreases
(iii) Output remains constant despite varying input
(iv) Irregular fluctuations in sensor readingQ1d. Which factor is not considered when choosing a transducer? (i) Sensitivity (ii) Power supply frequency (iii) Environmental conditions (iv) Linearity20242m
Unit 2.0: Static and Dynamic Characteristics of Sensors and Transducers
View this question on its own page →Which factor is not considered when choosing a transducer?
(i) Sensitivity
(ii) Power supply frequency
(iii) Environmental conditions
(iv) LinearityQ1e. Which of the following devices operates based on the Hall Effect? (i) RTD (ii) Capacitive level switch (iii) LVTD (iv) Magnetic field sensor20242m
Unit 3.0: Displacement and Level Sensors
View this question on its own page →Which of the following devices operates based on the Hall Effect?
(i) RTD
(ii) Capacitive level switch
(iii) LVTD
(iv) Magnetic field sensorQ1f. A digital transducer is primarily characterized by: (i) Continuous analog output (ii) Use of thermal energy (iii) Binary or discrete output (iv) Requirement for mechanical movement20242m
Unit 3.0: Displacement and Level Sensors
View this question on its own page →A digital transducer is primarily characterized by:
(i) Continuous analog output
(ii) Use of thermal energy
(iii) Binary or discrete output
(iv) Requirement for mechanical movementQ1g. The basic working principle of a resistance strain gauge is based on: (i) Piezoelectric effect (ii) Change in electrical resistance due to strain (iii) Change in magnetic field (iv) Variation in capacitance with pressure20242m
Unit 4.0: Strain, Force
View this question on its own page →The basic working principle of a resistance strain gauge is based on:
(i) Piezoelectric effect
(ii) Change in electrical resistance due to strain
(iii) Change in magnetic field
(iv) Variation in capacitance with pressureQ1h. A proving ring is used to measure: (i) Velocity (ii) Displacement (iii) Pressure (iv) Force20242m
Unit 4.0: Strain, Force
View this question on its own page →A proving ring is used to measure:
(i) Velocity
(ii) Displacement
(iii) Pressure
(iv) ForceQ1i. A diaphragm in a pressure sensor is primarily used to: (i) Adjust signal frequency (ii) Convert pressure into mechanical displacement (iii) Control air flow (iv) Transmit voltage signals20242m
Unit 6.0: Pressure Transducer
View this question on its own page →A diaphragm in a pressure sensor is primarily used to:
(i) Adjust signal frequency
(ii) Convert pressure into mechanical displacement
(iii) Control air flow
(iv) Transmit voltage signalsQ1j. Which transduction method involves a change in inductance due to movement of a magnetic core? (i) LVDT (Linear Variable Differential Transformer) (ii) Strain gauge transducer (iii) Variable capacitance device (iv) Piezoelectric sensor20242m
Unit 6.0: Pressure Transducer
View this question on its own page →Which transduction method involves a change in inductance due to movement of a magnetic core?
(i) LVDT (Linear Variable Differential Transformer)
(ii) Strain gauge transducer
(iii) Variable capacitance device
(iv) Piezoelectric sensorQ2. Explain in detail the different types of errors in sensor measurements—gross errors, systematic errors, and random errors. What are some methods to reduce or eliminate each of these errors?202414m
Unit 1.0: Introduction
View this question on its own page →Explain in detail the different types of errors in sensor measurements—gross errors, systematic errors, and random errors. What are some methods to reduce or eliminate each of these errors?
Q3a. What is static calibration? Describe the procedure for performing static calibration on a sensor and explain the importance of static error analysis.20247m
Unit 2.0: Static and Dynamic Characteristics of Sensors and Transducers
View this question on its own page →What is static calibration? Describe the procedure for performing static calibration on a sensor and explain the importance of static error analysis.
Q3b. Discuss the importance of Signal-to-Noise Ratio (SNR) in measurement systems. How does SNR affect the performance of a transducer?20247m
Unit 2.0: Static and Dynamic Characteristics of Sensors and Transducers
View this question on its own page →Discuss the importance of Signal-to-Noise Ratio (SNR) in measurement systems. How does SNR affect the performance of a transducer?
Q4a. Define a transducer and explain the principle of transduction. Differentiate between active and passive transducers with suitable examples.20247m
Unit 1.0: Introduction
View this question on its own page →Define a transducer and explain the principle of transduction. Differentiate between active and passive transducers with suitable examples.
Q4b. Discuss the working principle of Hall Effect Devices. What are their advantages and limitations in industrial measurement systems?20247m
Unit 3.0: Displacement and Level Sensors
View this question on its own page →Discuss the working principle of Hall Effect Devices. What are their advantages and limitations in industrial measurement systems?
Q5a. Discuss various types of strain gauges including wire, foil, unbounded, and semiconductor gauges. Highlight their construction, advantages, and limitations.20247m
Unit 4.0: Strain, Force
View this question on its own page →Discuss various types of strain gauges including wire, foil, unbounded, and semiconductor gauges. Highlight their construction, advantages, and limitations.
Q5b. Describe the working of a Wheatstone bridge circuit in strain gauge applications. Explain how it enhances sensitivity and accuracy in measurements.20247m
Unit 4.0: Strain, Force
View this question on its own page →Describe the working of a Wheatstone bridge circuit in strain gauge applications. Explain how it enhances sensitivity and accuracy in measurements.
Q6a. Define torque and explain why accurate torque measurement is important in mechanical systems. Give examples of its applications in industry.20247m
Unit 5.0: Torque Measurement
View this question on its own page →Define torque and explain why accurate torque measurement is important in mechanical systems. Give examples of its applications in industry.
Q6b. Compare and contrast the deflection type and stress-type torque measurement systems in terms of principle, construction, response time, and typical use cases.20247m
Unit 5.0: Torque Measurement
View this question on its own page →Compare and contrast the deflection type and stress-type torque measurement systems in terms of principle, construction, response time, and typical use cases.
Q7. Define pressure calibration. What is a pressure multiplexer, and how does it help in automating multi-point calibration setups? Discuss in detail.202414m
Unit 6.0: Pressure Transducer
View this question on its own page →Define pressure calibration. What is a pressure multiplexer, and how does it help in automating multi-point calibration setups? Discuss in detail.
Q8a. Explain the classification of sensors based on the measurand and give examples for each type.20247m
Unit 1.0: Introduction
View this question on its own page →Explain the classification of sensors based on the measurand and give examples for each type.
Q8b. What are the main factors that influence the selection of a transducer for a specific application? Discuss how these factors vary for high-precision versus industrial-grade sensors.20247m
Unit 2.0: Static and Dynamic Characteristics of Sensors and Transducers
View this question on its own page →What are the main factors that influence the selection of a transducer for a specific application? Discuss how these factors vary for high-precision versus industrial-grade sensors.
Q9a. Write Short notes on: Reproducibility and Drift20247m
Unit 2.0: Static and Dynamic Characteristics of Sensors and Transducers
View this question on its own page →Write Short notes on: Reproducibility and Drift
Q9b. Write Short notes on: Variable Inductance & Capacitance Transducer20247m
Unit 3.0: Displacement and Level Sensors
View this question on its own page →Write Short notes on: Variable Inductance & Capacitance Transducer
Q9c. Write Short notes on: Factors affecting strain measurements20247m
Unit 4.0: Strain, Force
View this question on its own page →Write Short notes on: Factors affecting strain measurements
Q9d. Write Short notes on: Pneumatic and Hydraulic systems20247m
Unit 6.0: Pressure Transducer
View this question on its own page →Write Short notes on: Pneumatic and Hydraulic systems