Sensor Systems Questions and Answers

Instrumentation Transducers Questions and Answers – Sensor Systems

This set of Instrumentation Transducers Multiple Choice Questions & Answers (MCQs) focuses on “Sensor Systems”.

1. Smallest change which a sensor can detect is ____________
a) Resolution
b) Accuracy
c) Precision
d) Scale

Explanation: Resolution is the smallest change a sensor can detect.

2. Thermocouple generate output voltage according to ____________
a) Circuit parameters
b) Humidity
c) Temperature
d) Voltage

Explanation: A thermocouple is a device that can provide an output voltage based on the temperature of its input.

3. Sensor is a type of transducer.
a) True
b) False

Explanation: A sensor is a device that allows you to measure the value of an input.

4. Which of the following is not an analog sensor?
a) Potentiometer
b) Force-sensing resistors
c) Accelerometers
d) None of the mentioned

Explanation: All of the mentioned devices are analog sensors.

5. Measured property have no relation with error.
a) True
b) False

Explanation: Error of a system is independent of the measured value.

6. Which of the following is correct for tactile sensors?
a) Touch sensitive
b) Pressure sensitive
c) Input voltage sensitive
d) Humidity sensitive

Explanation: Tactile sensors are those which sensitive to touch.
7. Change in output of sensor with change in input is ____________
a) Threashold
b) Slew rate
c) Sensitivity
d) None of the mentioned

Explanation: Sensitivity of a sensor is the change in output for a change in input.
8. Which of the following can be cause for non-zero output when zero input?
a) Bias
b) Slew
c) Offset
d) Offset or bias

Explanation: For ideal condition, zero input produces zero output.
9. Sensitivity of a sensor can be depicted by _______________
a) Niquist plot
b) Pole- zero plot
c) Bode plot
d) None of the mentioned

Explanation: Bode plot can be used for describing the sensitivity of a sensor.
10. Which of the following error is caused by a reversal of measured property?
a) Hysterisis
b) Noise
c) Digitization error
d) Quantization error

Explanation: Digitization error is caused by a reversal of measured value.

A sensor contains its associated signal processing hardware (analogue or digital), with the processing either integrated into or on the same package as the sensor or separate from it. A vast and particular vocabulary is necessary to define and characterise the performance of a sensor. A sensor turns a physical action into an electrical equivalent and processes it so that electrical signals can be conveniently transferred and processed. The sensor can report whether or not an object is present (binary) or what measurement value was attained (analog or digital).

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