M5 Instrumentation Q1

What is a measuring instrument?

• A device for measuring a physical quantity

• A transducer

• A type of sensor

• A signal conditioner

Which of the following is NOT a mechanical measurement?

• Pressure

• Temperature

• Humidity

• Voltage

What does a sensor do?

• Converts sensed values into signals

• Measures physical quantities directly

• All of the above

• Provides outputs in various forms

What is the primary function of a transducer?

• To measure physical quantities

• To convert sensed values into detectable signals

• To amplify signals

• To filter noise

What is signal conditioning used for?

• To modify the signal

• To measure a signal

• To calibrate instruments

• To transfer information

What does the output stage of a measurement system do?

• Indicates or records the measured value

• Filters noise from the signal

• Calibrates the instrument

• Converts signals into electrical form

What is noise in the context of measurements?

• A deterministic trend in data

• A calibration error

• Random variation of the measured signal

• A type of sensor output

What is Repeatability?

• The ability to measure the same value when tested by different operators using different instruments.

• Measures how accurately a sensor matches the true value

• The ability of a sensor or instrument to consistently produce the same output under identical conditions.

• The amount of time a sensor takes to respond to a sudden change.

What is Reproducibility?

• The ability to measure the same value when tested by different operators using different instruments.

• Measures how accurately a sensor matches the true value

• The ability of a sensor or instrument to consistently produce the same output under identical conditions.

• The amount of time a sensor takes to respond to a sudden change.

When should instruments be calibrated?

• Only before major critical measurements

• Only after major critical measurements

• Before and after major critical measurements

• Calibration is not necessary