What is the primary function of a sensor?

• To convert one form of energy to another

• To detect changes in physical conditions

• To store data for future use

• To amplify electrical signals

Which of the following is an example of an active sensor?

• Strain gauge

• Optical sensor

• Temperature sensor

• Thermocouple

Which type of sensor must be in direct contact with the measured variable?

• Non-contact sensor

• Active sensor

• Passive sensor

• Contact sensor

Which of the following is a passive sensor?

• Thermocouple

• Photodiode

• Strain gauge

• Piezoelectric sensor

What is the primary function of a transducer?

• To convert one form of energy to another

• To amplify signals

• To measure temperature

• To sense pressure

What type of transducer generates an electrical output in the form of pulses?

• Analog transducer

• Digital transducer

• Passive transducer

• Active transducer

Which transduction principle involves a change in capacitance?

• Photovoltaic transduction

• Capacitive transduction

• Electromagnetic transduction

• Inductive transduction

What is the main advantage of using a potentiometer?

• High accuracy

• High sensitivity

• Simple construction and operation

• Requires no external power

Which of the following is an example of an inverse transducer?

• Microphone

• Photodiode

• Thermocouple

• Speaker

Which of the following is a characteristic of active transducers?

• Convert electrical energy to mechanical energy

• Produce output in pulses

• Self-generating

• Require external power