Quiz on Sensors and Actuators

What is a transducer?

• A device that stores energy

• A device that amplifies electrical signals

• A device that converts one form of energy into another

• A device that generates heat

Which of the following is a transducer?

• Electric motor

• Resistor

• Capacitor

• Fuse

Which of the following is an example of a transducer that converts sound to electrical energy?

• Microphone

• Thermistor

• LED

• Transistor

What is the primary function of a sensor?

• To amplify a signal

• To store electrical energy

• To detect physical changes and convert them into electrical signals

• To convert mechanical energy into kinetic energy

Which of the following is an example of a temperature sensor?

• Thermocouple

• Piezoelectric sensor

• Optical sensor

• Limit switch

Which of the following sensors detects light intensity?

• Photoresistor

• Thermistor

• Potentiometer

• Ultrasonic sensor

What is an active sensor?

• A sensor that needs external power

• A sensor that modifies electrical quantities

• A sensor that generates its own electrical signal

• A sensor that stores data

Which of the following is a passive sensor?

• Thermistor

• Thermocouple

• Photovoltaic cell

• Piezoelectric sensor

What type of output does an analogue sensor produce?

• Binary values

• Discrete values

• Continuous voltage signals

• No output

Which one is a digital sensor?

• Thermistor

• Limit switch

• Fuel gauge

• Light sensor