40 Questions
The static characteristics of a sensor refer to its properties when steady state conditions occur.
True
Hysteresis and backlash are part of the dynamic characteristics of a sensor.
True
Resolution refers to the difference between the maximum and minimum value of the sensed parameter.
False
Accuracy is the ability to reproduce measurements repeatedly with a given precision.
False
The response time of a sensor is the time lag between the input and output.
True
Resonance is defined as the frequency at which the output magnitude peak occurs.
True
Deadband represents the range of input for which there is no output from the sensor.
True
Signal-to-noise ratio is the ratio of change in output to a unit change of the input.
False
Sensitivity is defined as the operating temperature range in which a sensor performs as specified.
False
Dynamic characteristics describe a sensor's behavior when it has settled down after receiving some input.
False
Sensitivity is a measure of the change in instrument output that occurs when the quantity being measured changes by a given amount.
True
The accuracy of a sensor is directly proportional to error, i.e., a highly accurate sensor produces high errors.
False
Bias errors can be detected or removed by statistical means.
False
Repeatability refers to the precision of a set of measurements taken over a long time interval.
False
Precision implies agreement between successive readings and closeness to the true value.
False
The sensitivity of an analog sensor is related to the resolution.
True
Loading errors occur due to changes in the sensor output when the input is zero.
False
Precision is the capacity of a measuring instrument to give different readings when repetitively measuring the same quantity under the same prescribed conditions.
False
The accuracy of an instrument depends on its inherent limitations.
True
Error is defined as the difference between a measured value and an estimated value.
False
Hysteresis and backlash are considered static characteristics of a sensor.
False
The resolution of a sensor refers to the smallest change the sensor can differentiate.
True
Deadband represents the range of input for which there is no output from the sensor.
False
Loading errors occur due to changes in the sensor output when the input is zero.
False
The accuracy of a sensor is directly proportional to error, i.e., a highly accurate sensor produces high errors.
False
Sensitivity is defined as the operating temperature range in which a sensor performs as specified.
False
Error is defined as the difference between a measured value and an estimated value.
True
The sensitivity of an analog sensor is related to the resolution.
True
The response time of a sensor is the time lag between the input and output.
True
Sensitivity, offset & bias, span & dynamic range, saturation & dead zone, hysteresis & backlash, and nonlinearity are all considered static characteristics of a sensor.
False
Accuracy is a measure of the difference between the measured value and actual value.
True
Sensitivity is the ability of the measuring instrument to respond to changes in the measured quantity.
True
Precision implies agreement between successive readings, NOT closeness to the true value.
True
The sensitivity of an analog sensor is the slope of the output versus input line.
True
Bias errors can be detected or removed by statistical means.
False
Repeatability refers to the precision of a set of measurements taken over a short time interval.
True
Loading errors occur due to changes in the sensor output when the input is zero.
True
Dynamic characteristics describe a sensor's behavior when it has settled down after receiving some input.
False
The response time of a sensor is the time lag between the input and output.
True
Resolution refers to the difference between the maximum and minimum value of the sensed parameter.
False
Study Notes
Static Characteristics of a Sensor
- Hysteresis and backlash are not part of the static characteristics of a sensor.
- Sensitivity, offset & bias, span & dynamic range, saturation & dead zone, hysteresis & backlash, and nonlinearity are not considered static characteristics of a sensor.
- Accuracy is a measure of the difference between the measured value and actual value.
- Resolution refers to the smallest change the sensor can differentiate.
- Deadband represents the range of input for which there is no output from the sensor.
- Loading errors occur due to changes in the sensor output when the input is zero.
Dynamic Characteristics of a Sensor
- Hysteresis and backlash are part of the dynamic characteristics of a sensor.
- Dynamic characteristics describe a sensor's behavior when it has settled down after receiving some input.
- Response time of a sensor is the time lag between the input and output.
- Resonance is defined as the frequency at which the output magnitude peak occurs.
Sensor Performance
- Accuracy is the ability to reproduce measurements repeatedly with a given precision.
- Precision implies agreement between successive readings.
- Repeatability refers to the precision of a set of measurements taken over a long time interval.
- Error is defined as the difference between a measured value and an estimated value.
- Bias errors can be detected or removed by statistical means.
- Sensitivity is a measure of the change in instrument output that occurs when the quantity being measured changes by a given amount.
- The sensitivity of an analog sensor is related to the resolution and is the slope of the output versus input line.
- Signal-to-noise ratio is the ratio of change in output to a unit change of the input.
- A highly accurate sensor does not produce high errors.
Test your understanding of sensor's characteristics with a focus on static and dynamic properties, sensitivity, offset & bias, span & dynamic range, saturation & dead zone, hysteresis & backlash, and nonlinearity. This quiz is based on Chapter 2 of 'Sensors and Instrumentations' by Dr. Galal A. M. Atlam.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
