Control Systems: Interactive Learning Quizzes for Year 11 Design and Technology

Question 1

Which option is **NOT** a type of feedback control system?

Accepted Answer

Open-Loop Control

Answer

Negative Feedback

Answer

Positive Feedback

Question 2

In a control system, what is the primary function of a sensor?

Accepted Answer

To measure the system's output

Answer

To compare the output to the desired response

Answer

To amplify the signal from the controller

Answer

To activate the actuator

Question 3

Which of the following is an **example** of a positive feedback system?

Accepted Answer

A human body's reaction to a fever

Answer

A thermostat regulating room temperature

Question 4

In a control system, which element directly produces the desired output?

Accepted Answer

Actuator

Answer

Sensor

Answer

Controller

Question 5

What is the primary difference between proportional and integral control systems?

Accepted Answer

Proportional control responds immediately to error, integral control responds over time

Answer

Integral control responds to the error immediately, while proportional control responds over time.

Question 6

What is the primary function of a reference input in a control system?

Accepted Answer

Provides the desired output for the system

Answer

To measure the actual output of the system

Question 7

In a control system, feedback uses information about the system's output to adjust its input. Which of the following is NOT a type of feedback?

Accepted Answer

Open-loop control

Answer

Positive feedback

Answer

Negative feedback

Answer

Proportional feedback

Question 8

Which type of sensor is used to measure the intensity of light?

Accepted Answer

Light-dependent resistor (LDR)

Answer

Thermistor

Answer

Strain gauge

Answer

Accelerometer

Question 9

What effect does negative feedback have on a control system?

Accepted Answer

Reduces the output signal over time

Answer

Increases the output signal over time

Answer

Maintains a constant output signal

Answer

Causes the system to oscillate indefinitely

Question 10

What does the step response of a control system represent?

Accepted Answer

The output of the system after a sudden change in input

Answer

The time taken for the system to reach a steady state

Answer

The error between the actual and desired output

Answer

The gain of the system

Question 11

How does negative feedback help control systems stay stable?

Accepted Answer

It makes the difference between the wanted and actual system output smaller.

Answer

It makes the difference between the wanted and actual system output bigger.

Answer

It makes the difference between the wanted and actual system output the opposite.

Question 12

Which component is NOT found in a control system?

Accepted Answer

Power source

Answer

Sensor

Answer

Actuator

Answer

Feedback loop

Question 13

Which example represents a closed-loop control system?

Accepted Answer

Thermostat regulating room temperature

Answer

Light switch turning on a light

Answer

Timer controlling garden watering

Answer

Car operating solely on mechanical systems

Question 14

What is the main function of an actuator in a control system?

Accepted Answer

To convert an electrical signal into a mechanical action

Answer

To sense changes in the environment

Answer

To compare the actual output with the desired output

Answer

To amplify the input signal

Question 15

What is the key difference between positive feedback and negative feedback?

Accepted Answer

Positive feedback reinforces the error signal, while negative feedback reduces it

Answer

Negative feedback reinforces the error signal, while positive feedback reduces it

Answer

Positive feedback enhances the system's stability, while negative feedback reduces it

Answer

Negative feedback enhances the system's stability, while positive feedback reduces it

Question 16

What is the primary benefit of using a proportional-integral-derivative (PID) controller in a control system?

Accepted Answer

Enhanced precision and stability of the system

Answer

Reduced response time of the system

Answer

Elimination of the need for feedback

Answer

Amplification of the input signal

Question 17

What is a significant advantage of using a programmable logic controller (PLC) in a control system?

Accepted Answer

Flexibility and ease of programming

Answer

Exceptional precision and accuracy

Answer

Low cost

Answer

Compact size

Question 18

Which of the following is NOT a fundamental component of a control system?

Accepted Answer

Control algorithm

Answer

Feedback

Answer

Sensors

Answer

Actuators

Question 19

What is the primary function of feedback in a control system?

Accepted Answer

To continuously monitor and compare the system's output to the desired input

Answer

To directly control the actuators based on sensor data

Answer

To provide power to the sensors and actuators

Answer

To process and analyze the input data

Question 20

Which type of sensor is commonly used to measure temperature variations?

Accepted Answer

Thermistor

Answer

Potentiometer

Answer

Photoresistor

Answer

Strain gauge

Question 21

What is the primary purpose of an actuator in a control system?

Accepted Answer

To modify the system's output based on control signals

Answer

To detect and measure physical quantities

Answer

To compare the system's output to the desired input

Answer

To analyze and interpret data from sensors

Question 22

Which of the following is a key advantage of employing microcontrollers in control systems?

Accepted Answer

Enhanced flexibility and customization

Answer

Reduced production costs

Answer

Improved reliability and stability

Answer

Increased power consumption

Question 23

What is the primary objective of a PID controller in a control system?

Accepted Answer

To adjust the system's output based on the difference between the desired and measured values

Answer

To maintain a constant output regardless of input variations

Answer

To limit the system's output to a predetermined range

Answer

To measure and display the system's output

Question 24

Which industry below is least likely to use control systems in its daily operations?

Accepted Answer

Education

Answer

Manufacturing

Answer

Healthcare

Answer

Transportation

Question 25

What is the primary purpose of control systems?

Accepted Answer

To regulate and maintain specific conditions within a system, ensuring its stability and efficient operation.

Answer

To control electrical currents in electronic systems.

Answer

To manage complex systems only.

Answer

To prevent stability within a system.

Question 26

Which of the following is NOT a fundamental component of a feedback control system?

Accepted Answer

Power supply

Answer

Sensor

Answer

Controller

Answer

Actuator

Question 27

What is the primary role of a sensor in a control system?

Accepted Answer

To detect and measure the controlled variable

Answer

To amplify the control signal

Answer

To provide power to the system

Question 28

Which of the following best exemplifies a closed-loop control system?

Accepted Answer

A thermostat regulating the temperature of a room

Answer

A traffic light

Answer

A car's ignition system

Question 29

How do positive and negative feedback differ in the context of control systems?

Accepted Answer

Positive feedback strengthens the system's output, while negative feedback weakens it.

Answer

Positive and negative feedback have identical effects on the system's output.

Answer

Positive feedback weakens the system's output, while negative feedback strengthens it.

Question 30

What is the main purpose of an actuator in a control system?

Accepted Answer

To translate the control signal into a physical action

Answer

To provide power to the system

Answer

To amplify the control signal

Question 31

What primary advantage do digital control systems offer over analog control systems?

Accepted Answer

Enhanced accuracy and reliability

Answer

Faster operation

Answer

Lower cost

Question 32

What is the fundamental distinction between closed-loop and open-loop control systems?

Accepted Answer

Closed-loop systems compare the output to the input and adjust accordingly, while open-loop systems do not.

Answer

Open-loop systems compare the output to the input and adjust accordingly, while closed-loop systems do not.

Question 33

What is the primary objective of a proportional-integral-derivative (PID) controller?

Accepted Answer

To minimize the steady-state error in a control system

Answer

To increase the speed of the control system

Answer

To improve system stability

Question 34

Which of the following is NOT a component of a control system?

Accepted Answer

Power supply

Answer

Controller

Answer

Actuator

Answer

Sensor

Question 35

What is the purpose of feedback in a control system?

Accepted Answer

To compare the actual output to the desired output and make adjustments accordingly.

Answer

To amplify the error signal.

Answer

To provide power to the actuators.

Question 36

Which of the following types of sensors measures the position of an object?

Accepted Answer

Position sensor

Answer

Light sensor

Answer

Temperature sensor

Answer

Pressure sensor

Question 37

What is the function of an actuator in a control system?

Accepted Answer

To convert electrical signals into physical actions.

Answer

To compare the actual output to the desired output.

Answer

To sense changes in the environment.

Question 38

Which of the following is an example of a closed-loop control system?

Accepted Answer

A thermostat that regulates room temperature.

Answer

A car's cruise control system.

Answer

A light switch that turns on a lamp.

Question 39

What is the gain of a control system?

Accepted Answer

The ratio of the output change to the input change.

Answer

The time it takes for the system to reach equilibrium.

Answer

The difference between the desired output and the actual output.

Question 40

Which of the following is a characteristic of a stable control system?

Accepted Answer

It returns to equilibrium quickly after a disturbance.

Answer

It oscillates around the desired output.

Answer

It overshoots the desired output.

Question 41

Which of the following industries uses control systems extensively?

Accepted Answer

Manufacturing

Answer

Retail

Answer

Education

Answer

Healthcare

Question 42

What is the difference between a closed-loop and an open-loop control system?

Accepted Answer

Closed-loop systems use feedback to adjust their output, while open-loop systems do not.

Answer

Closed-loop systems are less accurate than open-loop systems.

Answer

Open-loop systems are more complex than closed-loop systems.