Systems and Control Quizzes for Year 12 Design and Technology

Question 1

In a feedback control system, which component is responsible for monitoring and detecting changes in the system's output?

Accepted Answer

Sensor

Answer

Controller

Answer

Actuator

Answer

Amplifier

Question 2

In a basic feedback control system, which component compares the feedback signal to the reference signal?

Accepted Answer

Comparator

Answer

Sensor

Answer

Amplifier

Answer

Actuator

Question 3

In a feedback control system, which component compares the measured output to the desired output?

Accepted Answer

Controller

Answer

Sensor

Answer

Actuator

Answer

Computer

Question 4

In a feedback control system, which component converts the control signal into a physical action?

Accepted Answer

Actuator

Answer

Sensor

Answer

Controller

Answer

Power supply

Question 5

In a feedback control system, which component initiates corrective action when the measured output differs from the desired value?

Accepted Answer

Controller

Answer

Sensor

Answer

Actuator

Answer

Power source

Question 6

In a closed-loop feedback control system, which component compares the actual output to the desired output to calculate the error?

Accepted Answer

Controller

Answer

Sensor

Answer

Actuator

Answer

Reference input

Question 7

In a closed-loop control system, which component modifies the system's output based on the error signal?

Accepted Answer

Controller

Answer

Sensor

Answer

Actuator

Answer

Power supply

Question 8

In a feedback control system, which component specifies the desired value for the controlled variable?

Accepted Answer

Reference Input

Answer

Sensor

Answer

Controller

Answer

Actuator

Question 9

In a feedback control system, which component measures the actual output and compares it to the desired output?

Accepted Answer

Sensor

Answer

Actuator

Answer

Controller

Answer

Variable

Question 10

Which of the following is NOT a type of feedback control system commonly used in engineering applications?

Accepted Answer

Open-loop control

Answer

Proportional control

Answer

Integral control

Answer

Derivative control

Question 11

What is a potential drawback of using a closed-loop control system?

Accepted Answer

Increased energy use

Answer

Enhanced accuracy

Answer

Quicker response

Answer

Improved stability

Question 12

In a feedback control system, which component analyzes the error signal and determines the appropriate response?

Accepted Answer

Controller

Answer

Sensor

Answer

Actuator

Answer

Power supply

Question 13

Which component is NOT essential for a feedback control system to operate?

Accepted Answer

Power source

Answer

Sensor

Answer

Controller

Answer

Actuator

Question 14

In a feedback control system, which component compares the measured output to the desired output and generates an error signal?

Accepted Answer

Comparator

Answer

Sensor

Answer

Actuator

Answer

Power supply

Question 15

In a closed-loop control system, which component is responsible for sensing and measuring the system's output?

Accepted Answer

Sensor

Answer

Actuator

Answer

Power supply

Answer

Controller

Question 16

Which characteristic defines closed-loop control systems?

Accepted Answer

System output is continuously compared to the desired value

Answer

External disturbances control the system

Answer

Only proportional control is used

Answer

Feedback mechanisms are absent

Question 17

In a feedback control system, which component detects changes in the system's output and converts them into an electrical signal?

Accepted Answer

Sensor

Answer

Controller

Answer

Actuator

Answer

Load

Question 18

What is a potential drawback of using a closed-loop control system?

Accepted Answer

Higher energy consumption

Answer

Enhanced precision

Answer

Lower susceptibility to disruptions

Answer

Greater stability

Question 19

In a feedback control system, which component measures the actual output?

Accepted Answer

Sensor

Answer

Actuator

Answer

Controller

Answer

Reference input

Question 20

In a feedback control system, which component takes a signal from the controller and turns it into a physical action?

Accepted Answer

Actuator

Answer

Sensor

Answer

Comparator

Answer

Power supply

Question 21

Which component is NOT essential to a closed-loop control system?

Accepted Answer

Power Supply

Answer

Actuator

Answer

Sensor

Answer

Controller

Question 22

Which component is NOT essential in a feedback control system?

Accepted Answer

Display unit

Answer

Sensor

Answer

Actuator

Answer

Controller

Question 23

In a feedback control system, which component provides data about the system's output?

Accepted Answer

Sensor

Answer

Controller

Answer

Actuator

Answer

Power supply

Question 24

Which of the following is a **disadvantage** of using a closed-loop control system compared to an open-loop control system?

Accepted Answer

Slower response time

Answer

Improved accuracy

Answer

Increased stability

Answer

Improved efficiency

Question 25

In a closed-loop control system, what is the primary purpose of negative feedback?

Accepted Answer

Reduce the difference between desired and actual output, minimizing steady-state error.

Answer

Increase system sensitivity to input changes, enabling precise control.

Answer

Destabilize the system, causing oscillations and reducing controllability.

Answer

Introduce a significant time delay into the system's response, affecting control accuracy.

Question 26

In control systems, what is the key difference between open-loop and closed-loop control?

Accepted Answer

Open-loop systems lack feedback, while closed-loop systems use feedback to regulate their output.

Answer

Open-loop systems adjust their output based on the difference between measured and desired output.

Answer

Closed-loop systems rely only on the reference input to determine their output.

Answer

Closed-loop systems are always more complex and expensive than open-loop systems.

Question 27

Which components are typically found in a feedback control system?

Accepted Answer

Sensor, Actuator, Comparator

Answer

Sensor, Actuator, Power Supply

Answer

Comparator, Power Supply, Actuator

Answer

Sensor, Power Supply, Comparator

Question 28

In a feedback control system, which component specifies the target value the system strives to maintain?

Accepted Answer

Reference

Answer

Sensor

Answer

Controller

Answer

Actuator

Question 29

In control systems, what distinguishes a proportional control system from other common types?

Accepted Answer

It uses a constant gain to directly modify the output based on the error.

Answer

It employs sensor feedback to monitor and adjust the control action.

Answer

It continuously adjusts the output based on the error's integral over time.

Answer

It uses a predictive model to anticipate system behavior and adjust control actions.

Question 30

In a feedback control system, which component is responsible for detecting and measuring the actual output?

Accepted Answer

Sensor

Answer

Controller

Answer

Actuator

Question 31

In control systems, a key distinction between open-loop and closed-loop systems is the use of feedback. Which statement accurately describes this difference?

Accepted Answer

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

Answer

Open-loop systems use feedback to adjust output, while closed-loop systems do not.

Answer

Open-loop systems continuously adjust output based on real-time measurements, while closed-loop systems do not.

Question 32

In a feedback control system, which component detects changes in the system's output and converts them into an electrical signal?

Accepted Answer

Sensor

Answer

Actuator

Answer

Transducer

Answer

Controller

Question 33

In a closed-loop control system, feedback plays a vital role. What's its main purpose?

Accepted Answer

Eliminate disturbances and maintain stability.

Answer

Reduce response time.

Answer

Increase efficiency.

Question 34

When designing a feedback control system, which of the following is a primary design goal to ensure optimal system performance?

Accepted Answer

Ensuring the system's stability and maintaining desired output

Answer

Minimizing the system's cost

Answer

Maximizing the system's response speed

Question 35

In closed-loop control systems, what is the purpose of negative feedback?

Accepted Answer

To stabilize the system by reducing deviations from the desired output.

Answer

To increase the system's sensitivity to changes.

Answer

To amplify the system's output.

Question 36

In a feedback control system, which component is NOT directly involved in the feedback loop?

Accepted Answer

Power supply

Answer

Sensor

Answer

Controller

Answer

Actuator

Question 37

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

Accepted Answer

It uses feedback to regulate its output.

Answer

It operates without feedback.

Answer

It is controlled by a computer program.

Answer

It is used to control the temperature of a room.

Question 38

In a closed-loop control system, how does negative feedback help maintain system stability?

Accepted Answer

It reduces the system's sensitivity to disturbances.

Answer

It increases the system's output signal.

Answer

It slows down the system's response to input changes.

Question 39

In a closed-loop control system, which component is not essential for its operation?

Accepted Answer

Comparator

Answer

Sensor

Answer

Actuator

Answer

Controller

Question 40

In a feedback control system, what is the main purpose of a PID controller?

Accepted Answer

Combine proportional, integral, and derivative control actions to enhance system performance

Answer

Adjust the system's gain based on the error signal

Answer

Convert the error signal into a physical action

Answer

Measure the system's output and generate an error signal

Question 41

In a control problem involving a system with significant time delays, which control algorithm is most appropriate: PID, state-space, or model predictive control?

Accepted Answer

Model predictive control

Answer

PID control

Answer

State-space control

Question 42

Which sensor detects pressure changes by measuring how much electrical charge is stored between two plates?

Accepted Answer

Capacitive sensor

Answer

Strain gauge

Answer

Thermocouple

Answer

Optical encoder

Question 43

Which of the following sensors measures angular position?

Accepted Answer

Rotary encoder

Answer

Thermocouple

Answer

Strain gauge

Answer

Photodiode

Question 44

Which of the following actuators converts electrical energy into mechanical motion?

Accepted Answer

Solenoid

Answer

Valve

Answer

Furnace

Answer

Relay

Question 45

Which of the following is NOT a common application of systems and control engineering?

Accepted Answer

Food preparation

Answer

Industrial automation

Answer

Medical devices

Answer

Transportation systems

Question 46

Which of the following is the most important characteristic of a proportional controller?

Accepted Answer

Gain

Answer

Integral time

Answer

Derivative time

Answer

Deadzone

Question 47

Which of the following control system types compensates for disturbances?

Accepted Answer

PID Control

Answer

P Control

Answer

PI Control

Answer

D Control

Question 48

Which of the following is the first step in designing a control system?

Accepted Answer

Problem definition

Answer

Mathematical modeling

Answer

Controller selection

Answer

Implementation

Question 49

Which of the following is NOT a common source of error in control systems?

Accepted Answer

Perfect knowledge

Answer

Sensor noise

Answer

Actuator nonlinearities

Answer

Environmental disturbances

Question 50

For a highly nonlinear dynamic system with constraints, which control algorithm is most appropriate?

Accepted Answer

MPC (Model Predictive Control)

Answer

PID (Proportional-Integral-Derivative)

Answer

State-space control

Answer

Open-loop control

Question 51

In resource-limited environments, what poses the biggest challenge for implementing feedback control systems?

Accepted Answer

Finding affordable sensors and actuators

Answer

Creating complex control algorithms

Answer

Connecting to existing systems

Answer

Meeting high data transfer rates

Question 52

Which of the following is NOT a type of feedback control system?

Accepted Answer

Open-loop control

Answer

Positive feedback

Answer

Negative feedback

Answer

Closed-loop control

Question 53

In a closed-loop system, the output is fed back to the controller to:

Accepted Answer

Compare it to the reference input and adjust the input to the system as needed

Answer

Detect any errors and correct them

Answer

Amplify the signal

Answer

Reduce noise

Question 54

Which of the following is an example of a sensor used in a control system?

Accepted Answer

Thermistor

Answer

Capacitor

Answer

Diode

Answer

Transistor

Question 55

The purpose of an actuator in a control system is to:

Accepted Answer

Control the system's output based on the controller's input

Answer

Detect changes in the system

Answer

Amplify the signal

Answer

Reduce noise

Question 56

Which of the following is NOT a type of feedback control system?

Accepted Answer

Open-loop control

Answer

Positive feedback

Answer

Negative feedback

Answer

Cascaded control

Question 57

Which of the following sensors can measure temperature?

Accepted Answer

Thermocouple

Answer

Strain gauge

Answer

LDR

Answer

Piezoelectric sensor

Question 58

Which of the following is NOT an advantage of using MATLAB/Simulink for control system design?

Accepted Answer

Limited real-time simulation capabilities

Answer

User-friendly GUI for system modeling

Answer

Comprehensive library of control blocks and functions

Answer

High accuracy and precision

Question 59

What is the primary use of a root locus plot in control system design?

Accepted Answer

To determine the stability of a system

Answer

To find the optimal controller gains

Answer

To analyze the transient response of a system

Answer

To design compensators

Question 60

In a feedback control system, the reference signal is a key component. How does it help in achieving precise control of the system's output?

Accepted Answer

Sets the desired output value for the system to follow

Answer

Reduces the system's error signal

Answer

Increases the system's gain

Answer

Provides a constant input to maintain the system's steady-state response

Question 61

A system that responds to external inputs and adjusts its output based on a comparison to a reference input is known as a:

Accepted Answer

Closed-loop system

Answer

Open-loop system

Answer

Negative feedback system

Answer

Positive feedback system

Question 62

The overall gain of a control system refers to the:

Accepted Answer

Ratio of output to input

Answer

Ratio of input to output

Answer

Ratio of error to output

Answer

Ratio of output to error

Question 63

A system with a high time constant is characterized by:

Accepted Answer

Slow response to changes

Answer

Fast response to changes

Answer

No response to changes

Answer

Unpredictable response to changes

Question 64

Which type of control system provides an output that is not influenced by the input?

Accepted Answer

Open-loop system

Answer

Hybrid system

Answer

Closed-loop system

Answer

Adaptive system