Sensors and Transducers

Sensor is a type of transducer

• True

• False

A device that transforms one form of energy to another:

• Transducer

• Transistor

• Transformer

• Transmitter

Automatic doors would use a:

• Motion Sensor

• Light Sensor

• Temperature Sensor

• Moisture Sensors

What type of sensor would be used in this kettle?

• Light Sensor

• Temperature Sensor

• Infra-red sensor

• Pressure Sensor

LVDT has

• one primary coil and two secondary coils

• one primary coil and one secondary coil

Resistance offered by a metal is independent of the length and the area of the conductor

• True

• False

Strain is defined as ________

• Change in height per unit height

• Change in weight per unit weight

• Change in length per unit length

• Change in diameter per unit diameter

Capacitive transducer is used for?

• Static measurement

• Dynamic measurement

• Transient measurement

• Both static and dynamic

For a material capacitance increases with _____________

• Decrease in area of plates, all other factors constant

• Increase in distance between plates, all other factors constant

• Decrease in distance between plates, all other factors constant

• None of the mentioned

LVDT works on the principle of ________

• variable resistance

• variable inductance

• variable capacitance

• variable pressure