Instrumentation and Motion Devices Quiz

What does a motion device report?

• The temperature of an object

• The physical position of an object with respect to a reference point

• The color of an object

• The weight of an object

Which device converts rotary or linear displacement to resistance?

• Potentiometer

• Accelerometer

• Tachometer

• Encoder

What is the unit of measurement for accelerometers?

• Ohms

• Hertz

• Watts

• Meters per second squared (m/s2) or G-force (g)

What type of output can motion transducers produce?

• Digital output – binary output, square wave '1' or '0'

• Analog output – resistance, voltage

• Both analog and digital outputs

• Sound waves

What does the accuracy of a motion device refer to?

• The battery life of the device

• The maximum deviation between the desired position and the actual position

• The weight of the device

• The color accuracy in displays

What is displacement?

• The speed of an object

• The temperature change of an object

• The difference between the initial position and any later position

• The color change of an object

Which device is used to measure rotational speed?

• Potentiometer

• Tachometer

• Accelerometer

• Resolver

What is the typical measurement range of a rotary potentiometer?

• Up to 350 degrees

• Up to 100 degrees

• Up to 180 degrees

• Up to 270 degrees

Which type of accelerometer utilizes the properties of an opposed plate capacitor?

• Mechanical

• Capacitive

• Piezoelectric

• Piezoresistive

What does a DC tachometer use to produce a voltage?

• A permanent magnet stator

• A piezoelectric material

• A liquid crystal display

• A thermal resistor