Variable Reluctance Sensors

A Variable Reluctance Sensor measures changes in ____

• Electrical Resistance

• Magnetic Reluctance

• Light Intensity

• Mechanical reluctance

What type of targets are variable reluctance sensors best suited for sensing?

• Targets that are stationary and do not move

• Targets made of any material

• Non-ferrous or non-magnetic targets

• Ferrous or magnetic targets

Magnetic Reluctance is given by

A Variable Reluctance Sensor consist of ___

• Ferromagnetic Pole Piece

• Hall Effect Sensor

• Permanent Magnet

• Coil of Wire

Which of the following reluctances is most significant in affecting the performance and reading of an inductive sensor?

• Reluctance of core

• Reluctance of armature

• Reluctance of air gap

• None of the above

What is the main advantage of using inductive sensors over capacitive sensors?

• they can be used for position sensing.

• they are non-contact sensors.

• they are not affected by the

  ambient humidity.

• None of the above

Which of the following materials is commonly used as the core material in Variable Reluctance sensors?

• Copper

• Iron

• Tungsten

• Gold

Self Inductance is given by

Application of Variable Reluctance Sensors

• Measuring the flow rate of a liquid

• Detecting the presence of metallic objects

• Monitoring the temperature of a room

• None of the above