Sensors and Controllers: Interactive Learning Quizzes for Year 5 Design Technology

Question 1

Which of these is NOT a sensor used to measure a physical quantity?

Accepted Answer

Power supply

Answer

Light sensor

Answer

Motion sensor

Answer

Temperature sensor

Question 2

What is an actuator's primary purpose?

Accepted Answer

Controlling devices based on sensor input

Answer

Detecting changes in surroundings

Answer

Storing environmental data

Answer

Generating electricity

Question 3

Explain the difference between analog and digital sensors.

Accepted Answer

Analog sensors provide continuous data, while digital sensors provide discrete values.

Answer

Digital sensors provide continuous data, while analog sensors provide discrete values.

Answer

Both analog and digital sensors provide continuous data.

Answer

Both analog and digital sensors provide discrete values.

Question 4

Which is NOT a safety precaution when working with electricity?

Accepted Answer

Keeping circuits energized while working on them

Answer

Wearing gloves when handling wires

Answer

Avoiding contact with exposed wires

Answer

Testing circuits with a multimeter before touching them

Question 5

How can sensors and actuators make our lives easier and better?

Accepted Answer

They can help people with disabilities move around and communicate more easily.

Accepted Answer

They can make our homes more comfortable by adjusting the temperature, lighting, and other settings automatically.

Accepted Answer

They can improve our safety and security by detecting smoke, gas, or intruders and triggering alarms or other safety measures.

Question 6

When solving a problem with a sensor-actuator system, which approach is most effective?

Accepted Answer

Following a logical troubleshooting plan

Answer

Experimenting randomly

Answer

Ignoring the issue

Answer

Seeking assistance from others

Question 7

What is the function of a potentiometer?

Accepted Answer

To adjust the amount of resistance in a circuit

Answer

To amplify signals

Answer

To measure voltage

Answer

To store energy

Question 8

Which device can measure force?

Accepted Answer

Strain gauge

Answer

Light Dependent Resistor (LDR)

Answer

Temperature sensor (Thermistor)

Answer

Motion sensor (Accelerometer)

Question 9

What is the process called that changes raw sensor data into a usable format?

Accepted Answer

Signal conditioning

Answer

Calibration

Answer

Filtering

Answer

Amplification

Question 10

How does feedback improve a control system?

Accepted Answer

It helps the system learn from its errors.

Answer

It makes the system more sensitive to changes.

Answer

It makes the system easier to design.

Answer

It makes the system less efficient.

Question 11

Which of these is NOT a type of sensor used to detect physical changes?

Accepted Answer

Motor

Answer

Temperature sensor

Answer

Light sensor

Answer

Ultrasonic sensor

Question 12

How can actuators be used to control the movement of a robot?

Accepted Answer

By providing the power to move the robot's joints

Answer

By sensing the position of the robot's joints

Answer

By storing data about the robot's movement

Answer

Actuators cannot be used to control robot movement

Question 13

What is a key advantage of using wireless sensors and actuators in a system?

Accepted Answer

Increased flexibility and mobility

Answer

Reduced cost and complexity

Answer

Improved accuracy

Answer

Increased reliability

Question 14

Which of the following is NOT a type of sensor?

Accepted Answer

Motor

Answer

Temperature sensor

Answer

Light sensor

Answer

Sound sensor

Question 15

Which of the following is an example of a system that uses both sensors and actuators?

Accepted Answer

Automatic door

Answer

Bicycle

Answer

Calculator

Answer

Book

Question 16

How do light sensors work?

Accepted Answer

They detect changes in light intensity

Answer

They detect changes in temperature

Answer

They detect changes in moisture

Answer

They detect changes in sound

Question 17

Which of the following is NOT a factor to consider when choosing a sensor?

Accepted Answer

Colour

Answer

Accuracy

Answer

Size

Answer

Price

Question 18

What is the difference between an analogue and a digital sensor?

Accepted Answer

Analogue sensors produce continuous signals, while digital sensors produce discrete signals.

Answer

Digital sensors are more accurate than analogue sensors.

Answer

Analogue sensors are cheaper than digital sensors.

Answer

There is no difference between analogue and digital sensors.

Question 19

How can sensors and actuators be used together to create a simple control system?

Accepted Answer

Sensors detect changes in the environment and send signals to actuators, which then respond accordingly.

Answer

Actuators detect changes in the environment and send signals to sensors, which then respond accordingly.

Answer

Sensors and actuators can be connected directly to each other without any control system.

Answer

Sensors and actuators cannot be used together to create a control system.

Question 20

What is the role of a microcontroller in a system using sensors and actuators?

Accepted Answer

To process signals from sensors and control actuators.

Answer

To store data from sensors.

Answer

To power sensors and actuators.

Answer

To detect changes in the environment.

Question 21

Which of the following is an example of an actuator?

Accepted Answer

LED

Answer

Thermistor

Answer

Microphone

Answer

LDR

Question 22

What is the primary difference between an analog and a digital sensor?

Accepted Answer

Analog sensors produce a continuous output signal while digital sensors produce discrete output levels.

Answer

Digital sensors produce a continuous output signal while analog sensors produce discrete output levels.

Answer

Analog sensors are more accurate than digital sensors.

Answer

Digital sensors are more accurate than analog sensors.

Question 23

What is a transducer?

Accepted Answer

A device that transforms one form of energy into another

Answer

A device that senses physical quantities

Answer

A device that controls physical systems

Answer

A device that generates electrical signals

Question 24

What is the function of an actuator?

Accepted Answer

To convert electrical signals into movement

Answer

To detect changes in the environment

Answer

To store data

Answer

To display information

Question 25

Which type of sensor can detect changes in temperature?

Accepted Answer

Thermistor

Answer

LDR

Answer

Microphone

Answer

PIR sensor

Question 26

What is the difference between an analogue and a digital sensor?

Accepted Answer

Analogue sensors produce continuous signals, while digital sensors produce discrete signals

Answer

Digital sensors are more accurate than analogue sensors

Answer

Analogue sensors are less expensive than digital sensors

Answer

Digital sensors can only be used with digital systems

Question 27

What is the role of a microcontroller in a system that uses sensors and actuators?

Accepted Answer

To process sensor data and control actuator actions

Answer

To store data from the sensors

Answer

To provide power to the sensors and actuators

Answer

To display information to the user

Question 28

What is the advantage of using a programmable microcontroller in a sensor-actuator system?

Accepted Answer

It allows for easy modification of the system's behaviour

Answer

It reduces the cost of the system

Answer

It improves the accuracy of the system

Answer

It makes the system more reliable

Question 29

What is the purpose of using a sensor in a feedback loop?

Accepted Answer

To provide information about the current state of the system

Answer

To control the behaviour of the system

Answer

To store data for later analysis

Answer

To display information to the user

Question 30

Which of the following is a sensor that detects movement, such as when someone walks past?

Accepted Answer

Motion sensor

Answer

Light sensor

Answer

Temperature sensor

Answer

Sound sensor

Question 31

How does an actuator work, changing electrical energy into something else?

Accepted Answer

By converting electrical energy into mechanical energy

Answer

By converting mechanical energy into electrical energy

Answer

By storing electrical energy

Answer

By amplifying electrical signals

Question 32

What is the purpose of using a light sensor in a system that turns on a light when it gets dark?

Accepted Answer

To detect changes in light intensity

Answer

To generate electrical signals

Answer

To amplify sound waves

Answer

To store energy

Question 33

In a control system, how do sensors and actuators work together?

Accepted Answer

Sensors provide information to the system, while actuators carry out actions based on that information.

Answer

Actuators provide information to the system, while sensors carry out actions based on that information.

Answer

They operate independently and have no connection to each other.

Answer

They both provide information to the system.

Question 34

Which of the following describes a temperature sensor?

Accepted Answer

Responds to changes in temperature

Answer

Measures the amount of light

Answer

Detects movement

Answer

Converts sound into electrical signals

Question 35

When working with actuators, what safety precaution is important to take?

Accepted Answer

Wear gloves and eye protection

Answer

Handle with bare hands

Answer

Use a magnifying glass for close inspection

Answer

Connect directly to a power source without supervision

Question 36

How can sensors be used to control the movement of a robotic arm, such as to pick up objects?

Accepted Answer

By detecting the position of the arm

Answer

By generating electrical signals to move the arm

Answer

By storing data about the arm's movements

Answer

By amplifying sound waves to control the arm

Question 37

What is a main benefit of using actuators in automated systems?

Accepted Answer

Reduced human involvement

Answer

Increased accuracy

Answer

Lower energy consumption

Answer

Enhanced durability

Question 38

Which of the following is NOT a type of sensor?

Accepted Answer

Light actuator

Answer

Light sensor

Answer

Temperature sensor

Answer

Motion sensor

Question 39

What is the primary function of a photoresistor?

Accepted Answer

To detect light and change resistance accordingly

Answer

To detect temperature and change resistance accordingly

Answer

To detect motion and change resistance accordingly

Answer

To control a motor

Question 40

Which of the following is NOT a type of actuator?

Accepted Answer

Microphone

Answer

LED

Answer

Motor

Answer

Speaker

Question 41

What is the main role of a microcontroller in a sensor-actuator system?

Accepted Answer

To process sensor data and control actuators

Answer

To control actuators only

Answer

To provide power to the system

Answer

To store data

Question 42

What is the key difference between a digital and an analogue sensor?

Accepted Answer

Analogue sensors provide continuous data, while digital sensors provide discrete data.

Answer

Digital sensors provide continuous data, while analogue sensors provide discrete data.

Answer

Digital sensors are more accurate than analogue sensors.

Answer

Analogue sensors are more sensitive than digital sensors.

Question 43

What can a transducer do?

Accepted Answer

Convert one form of energy to another

Answer

Control the flow of electricity

Answer

Store energy

Answer

Measure physical quantities

Question 44

In a closed-loop control system, what happens to the output?

Accepted Answer

It is used to control the input

Answer

It is not used to control the input

Answer

It is not affected by the input

Answer

It is only used to provide feedback

Question 45

Which of the following is NOT an advantage of using sensors and actuators in a system?

Accepted Answer

Increased complexity

Answer

Increased efficiency

Answer

Improved accuracy

Answer

Reduced maintenance

Question 46

Which of these is NOT a sensor?

Accepted Answer

Motor

Answer

Temperature sensor

Answer

Light sensor

Answer

Motion sensor

Question 47

What is an actuator used for?

Accepted Answer

To turn electrical signals into movement

Answer

To sense changes in the environment

Answer

To store information

Answer

To increase the strength of signals

Question 48

Which sensor would be best for detecting darkness?

Accepted Answer

Light sensor

Answer

Temperature sensor

Answer

Ultrasonic sensor

Answer

Sound sensor

Question 49

What does the controller do in a control system?

Accepted Answer

Reads the sensor information and decides what to do

Answer

Provides electricity to the system

Answer

Senses changes in the environment

Answer

Moves the output device

Question 50

What is the purpose of a feedback loop in a control system?

Accepted Answer

To make sure the system reacts properly to changes in the environment

Answer

To increase the signals from the sensor

Answer

To keep information from the sensor

Answer

To change analog signals to digital signals

Question 51

What is an actuator?

Accepted Answer

Something that converts electrical signals into physical actions

Answer

Something that detects changes in the environment

Answer

Something that stores data

Answer

Something that amplifies signals

Question 52

What is the difference between analog and digital sensors?

Accepted Answer

Analog sensors produce continuous signals, while digital sensors only give certain values

Answer

Digital sensors are more accurate than analog sensors

Answer

Analog sensors use more power than digital sensors

Answer

There is no difference between analog and digital sensors

Question 53

Which of these is not a type of actuator?

Accepted Answer

Transistor

Answer

Motor

Answer

Solenoid

Answer

Relay

Question 54

How does a solenoid work?

Accepted Answer

It uses an electromagnetic field to create a magnetic force

Answer

It converts electrical signals into heat energy

Answer

It generates a voltage across a coil

Answer

It detects changes in pressure

Question 55

What is the purpose of a relay?

Accepted Answer

To turn circuits on and off

Answer

To amplify signals

Answer

To isolate circuits

Answer

To convert AC to DC

Question 56

Which of the following is NOT a type of sensor?

Accepted Answer

Motor

Answer

Temperature sensor

Answer

Light sensor

Answer

Motion sensor

Question 57

What is the role of a microcontroller in a sensor-based system?

Accepted Answer

To process data from sensors and control actuators based on a program.

Answer

To generate electricity for the sensors and actuators.

Answer

To store the data collected by the sensors.

Answer

To connect the sensors and actuators to each other.

Question 58

What is the primary function of a program in a microcontroller-based system?

Accepted Answer

To provide instructions for the microcontroller to follow.

Answer

To convert electrical signals into mechanical movement.

Answer

To store data and information.

Answer

To amplify sensor signals.

Question 59

Which sensor detects changes in light?

Accepted Answer

Light-dependent resistor (LDR)

Answer

Thermistor

Answer

Piezoelectric sensor

Answer

Proximity sensor

Question 60

Which option is NOT a type of actuator?

Accepted Answer

Diode

Answer

Relay

Answer

Servo motor

Answer

Solenoid

Question 61

How does a thermistor operate?

Accepted Answer

Its resistance changes with temperature

Answer

It generates electricity when exposed to light

Answer

It produces sound when it vibrates

Answer

It detects changes in magnetic fields

Question 62

What key difference exists between an analog and a digital sensor?

Accepted Answer

Analog sensors measure continuous values, while digital sensors measure discrete values

Answer

Digital sensors are always more precise than analog sensors

Answer

Analog sensors find broader applications than digital sensors

Answer

There is no fundamental difference between analog and digital sensors

Question 63

What is a microcontroller primarily used for?

Accepted Answer

Controlling electronic devices as a mini-computer

Answer

Detecting movement like a sensor

Answer

Storing data like a memory device

Answer

Producing sound like a speaker