Exploring Robotics & AI Solutions Class 10 ICSE Chapter 3 Components of Robots as a System

Understanding the fundamental building blocks of any robotic system is crucial, and our ICSE Class 10 Robotics Components Solutions for the chapter “Components of Robots as a System” from the book Exploring Robotics & AI will help you master this essential topic. This chapter delves deep into the various elements that come together to form a functional robot, from the mechanical structures that give it form to the electronic brains that control its actions. We explore the roles of actuators, sensors, end-effectors, and the different types of gears that enable movement and precision. Grasping these concepts is vital not just for your exams but also for developing a foundational understanding of how robots operate in the real world. Let’s explore how each component contributes to a robot’s overall functionality and system integration.

When you’re tackling the “Components of Robots as a System” chapter, you might find yourself needing clear, step-by-step guidance for specific questions or wanting to verify your understanding of complex concepts like different gear types or actuator functions. This page provides comprehensive solutions for all 32 questions and exercises within this chapter, covering Multiple Choice Questions, Fill in the Blanks, Assertion and Reason, and Application-based problems. Each solution is crafted to align precisely with the methodology and expectations of the ICSE board, ensuring you learn the correct approach. Here, you get reliable, accurate, and easy-to-understand explanations for every problem.

Multiple Choice Questions

Question 1

Which type of actuator does this picture depict?

1. Linear
2. Direct
3. Rotatory
4. Indirect

Linear

Question 2

Which of the following is not the part of a robot?

1. Gears
2. Sensors
3. Actuators
4. Punctuators

Think for a moment about what a robot is actually made of. It needs parts to move, parts to ‘sense’ the world, and parts to perform actions. This is where most of its essential components come from.

Question 3

Which of the following consists non-parallel and non-intersecting gears?

1. Spur gears
2. Helical gears
3. Worm gears
4. None of these

Worm gears

Question 4

In which of the following machines, gear ratio is applicable?

1. Bicycles
2. Vehicles
3. Industrial devices
4. All of these

Think about this practically. From the familiar bicycles we ride, to all the vehicles on our roads, and even the massive industrial devices in factories – they all share a common engineering secret.

That secret is the Gear ratio. It’s what allows a machine to manage its power effectively. By changing gears, we can control the trade-off between speed and torque (which is the turning force). This control is absolutely essential for efficient power transmission, making sure the engine’s power is used in the best possible way. Since this principle is so fundamental to how these machines work, the correct answer is All of these.

Question 5

In a robot, the vision sensor acts as a/an …………… .

1. ear
2. eye
3. arm
4. hand

Question 6

Which of the following statements hold true for GPS?

1. It is a space-based radio navigation system.
2. It comprises satellites that emit navigational signals.
3. It is supported by control and ground monitoring stations.
4. All of these

All of these

Question 7

Which of following type of sensor is used to measure the rate of change in velocity?

1. Force sensor
2. Position sensor
3. Acceleration sensor
4. Velocity sensor

Think back to your physics lessons for a moment. When an object speeds up or slows down, its velocity is changing. The term for this is acceleration. In robotics, a specific component is designed to measure exactly that.

An acceleration sensor is the device used to measure the rate of change in velocity. This is a crucial piece of data for any moving robot, as it directly indicates whether the speed of the robot is increasing or decreasing.

Question 8

…………… actuators use compressed air to create motion in robotics to perform the tasks.

1. Pneumatic
2. Electric
3. Hydraulic
4. Rotatory

Pneumatic

Fill blanks

Question 1

Fill in the blanks:

1. Gear teeth are also known as cogs which has been derived from the term ……………. .
2. ……………. teeth refer to the interlocking of gear teeth to transmit motion and power effectively.
3. ……………. gears are one of the most commonly used gears to transmit power between parallel shafts, with teeth aligned parallel to the shaft axis.
4. In robotics, electric actuators are the commonly used actuators which convert electric energy into ……………. motion.
5. The controller serves as the ……………. of a robot which helps in processing and executes programmed commands.
6. In ……………. systems, the users select fan speeds ie., low, medium, high with the help of a regulator.
7. ……………. actuators are the actuators that generate motion by using pressurised fluid.
8. In robotics, ……………. control system uses technology and machines to complete the tasks.

1. You’ve likely heard gear teeth referred to as cogs. This common term is simply a shortened version of the word cogwheel, which is its origin.
2. When the teeth of different gears interlock perfectly to transfer motion and power from one part to another, this specific action is called Meshing.
3. Think of the most standard type of gear you might see, designed to transmit power between two parallel shafts. The teeth on these gears are straight and aligned parallel to the axis of the shaft. These are called Spur gears.
4. In the world of robotics, electric actuators are incredibly common. Their fundamental job is to take electrical energy and transform it into physical movement, which we refer to as mechanical motion.
5. Just like a living creature, a robot needs a central command centre. The controller fills this role, serving as the brain of the robot. It’s responsible for processing all the data and executing the programmed commands.
6. Let’s take a simple example like a ceiling fan. When you, the user, physically turn a regulator to choose between low, medium, or high speeds, you are operating a manual system.
7. Some actuators are incredibly powerful because they use pressurised fluid to generate movement. These specific types of actuators are known as Hydraulic actuators.
8. When a system in robotics is set up to use technology and machines to complete its tasks without direct human intervention, it is called an automatic control system.

Name the types of gears

Question 1

Let’s identify each of the gears shown in the diagram, going by the numbers.

1. The first one is a Bevel gear.
2. Next, at number two, we have a Spur gear.
3. The third image shows a Miter gear.
4. And finally, the fourth gear is a Helical gear.

Assertion and Reason based question

Question 1

Assertion (A): An automatic control system operates independently with the help of a controller.

Reason (R): It means that this control system requires continuous human intervention and decision-making to perform the desired tasks.

Based on the above discussion, choose an appropriate statement from the options given below:

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true and R is not the correct explanation of A.
3. A is true but R is false.
4. A is false but R is true.
5. Both A and R are false.

Let’s think carefully about what the word ‘automatic’ really means. The first statement, A, is perfectly correct. An automatic control system is designed to operate independently, using a controller as its brain to manage tasks without needing a person to constantly guide it.

Now, let’s examine the reason, R. It suggests that this very system requires continuous human intervention. This is where the logic gets tangled. A system that needs a person’s constant input is actually a manual control system, not an automatic one. The reason given is describing the complete opposite!

Therefore, we can confidently say that A is true but R is false.

Application based question

Question 1

The seamless integration of sensors, actuators and controllers is essential for an effective robotic system. It maintains precision and operate autonomously, with the controller managing complex interactions between sensors and actuators in real time. Each of these components has its own role in a robotics system.

Read the following statements and identify the components used in a robotic system.

(a) It provides input by detecting environmental conditions (like temperature, distance or pressure) or internal states (such as position or speed), sending this information to the controller.

(b) It acts as the brain of the system and after processing sensor data, makes decisions based on programmed algorithms. It determines the necessary actions for the robot to perform tasks accurately.

(c) Finally, it executes the actions and converting electrical signals from the controller into mechanical movement, such as turning a wheel, moving a robotic arm or gripping an object.

Let’s break down these roles, thinking about how a robot works like a living being.

(a) Think about your own senses—your eyes see, your ears hear. The component described here, which detects environmental conditions and sends that information as input, is fulfilling the role of the robot’s senses. These are the Sensors.

(b) After your senses gather information, your brain processes it and decides what to do. The description of a component acting as the “brain,” processing data and making decisions, points directly to the Controller. It’s the central command unit.

(c) Once your brain makes a decision, it sends signals to your muscles to create movement. The final description, about executing actions and converting electrical signals into mechanical movement, is precisely the job of the Actuators. They are the ‘muscles’ of the robot, carrying out the controller’s commands.

Write short notes

Question 1

Write short notes on Spur Gears.

When you picture a classic, simple gear in your mind, you’re most likely thinking of spur gears. These are one of the most commonly used gears you’ll find, designed specifically to transmit power between parallel shafts.

Their defining feature is their teeth, which are cut straight and are aligned parallel to the shaft axis. This straightforward design has an important consequence for the forces involved: it results in radial reaction loads on the shaft, but crucially, it creates no axial loads (forces pushing along the length of the shaft).

Now, if you’ve ever heard gears in action, you might know they can be loud. Compared to helical gears, for instance, spur gears are comparatively noisier. The reason for this comes down to how the teeth engage. Because of their straight shape, there is only a single line of contact between teeth at any given moment. As the teeth mesh, they roll off one contact and accelerate to the next, and this repeated impact is what generates the noise.

Question 2

Write short notes on Bevel Gears.

Imagine you need to make a machine’s power take a sharp turn. That’s precisely the job for Bevel gears. Their main purpose is to transfer power between shafts that intersect at a 90-degree angle, which is why they are ideal for building right-angle gear drives.

What makes them special is their shape. The teeth of these gears are cut on conical surfaces, which allows them to mesh at an angle. You’ll generally find two types: straight bevel gears or spiral bevel gears. Their fundamental role, however, remains the same: Bevel gears are used to change the direction of rotation.

It’s also important to know their trade-offs. Bevel gears tend to be more expensive and, for a given size, generally transmit less torque compared to parallel shaft arrangements.

Question 3

Write short notes on Miter Gears.

Think of miter gears as a special kind of bevel gear. You’ll find them wherever two rotational axes meet and need to transmit power, typically at a sharp 90-degree angle, like at a corner.

Now, here’s what makes them unique. Unlike other bevel gears, miter gears cannot change the speed of rotation. The reason is quite simple: in any pair of miter gears, both gears must have the exact same number of teeth. This creates a perfect 1:1 gear ratio. For every one turn of the first gear, the second gear also turns exactly once. Because of this, the primary function of these gears is purely to change the direction of transmission.

Just like their bevel gear cousins, miter gears can be found in both straight-cut and spiral-cut forms, and they share the fundamental characteristics of bevel gears.

Question 4

Write short notes on Tactile Sensor.

Think for a moment about your own sense of touch. It allows you to feel pressure and texture. A tactile or fingertip force sensor is designed to do something very similar for a machine; it measures the forces that are generated during physical contact or when pressure is applied by the environment.

In essence, this sensor beautifully mimics the human sense of touch, which, as you know, responds to the mechanical stimulation of our skin. Because of this capability, tactile sensors are incredibly useful and are widely used in fields like robotics, computer hardware, and various security systems.

A significant challenge that engineers face in robotics is achieving what we call finger dexterity. This is the ability for a robotic hand to move with the same skill and delicacy as a human’s. The lack of this dexterity limits the ability of conventional robotic systems to perform complex manual tasks effectively, and tactile sensors are a key part of solving this problem.

Question 5

Write short notes on Proximity Sensor.

Imagine a robot needing to ‘see’ without eyes. That’s the special job of a proximity sensor. Its entire purpose is to detect the presence or absence of objects without making any physical contact.

There are a couple of common types you’ll encounter. One is infrared (IR) sensors. These work by emitting infrared light and then looking for the reflected signal that comes back when an object is nearby. Another type is ultrasonic sensors. These use sound waves to measure the distance to an object. How? It’s based on the time taken for the sound to bounce back after hitting something.

As you can guess, proximity sensors are widely used in robots. They are absolutely critical for navigation, obstacle detection, and general interaction with surroundings, which all contribute to enhancing operational safety.

Question 6

Write short notes on Actuators.

Imagine the muscles in your own body. An actuator is very much like that, but for a robot. It’s an integral part of a device or a machine that gives it the power to perform physical actions. After the robot gets information from its sensors and processes it, the actuator is what kicks into gear, directing the device to start moving, rotating or gripping.

In robotics, actuators are absolutely essential to any robotic system. They are what bring the robot to life, and they are powered by one of three things: air, electricity, or fluids. The movement they create can be anything from simple joint rotations to highly complex tasks like walking or delicate object handling. The bottom line is this: Without actuators, robots would lack the ability to move or perform tasks. They would be completely static.

Answer the following questions

Question 1

What is meant by Gears? Give two examples.

Think about the inner workings of a complex robot or even a simple clock. You’ll find Gears inside. These are essentially toothed mechanical components, and their main job is to transfer motion and power between different parts of a machine.

You’ll notice they always work in matched pairs. The teeth of one gear are designed to interlock perfectly with the teeth of another. This is a very clever design because it completely prevents slippage during power transmission, making the transfer of energy very efficient.

Beyond just moving things, Gears can also be used to change the direction of rotation, the speed, and the torque (which is the turning force), all depending on their specific design and size.

Here are two classic examples you should know:

1. Spur gear
2. Bevel gear

Question 2

Explain the type of gear to be used to convert the rotatory motion into linear motion.

Have you ever wondered how a robot can make something spin, but then use that spinning to push an object in a perfectly straight line? The clever solution for this is called the rack and pinion mechanism.

It’s a system with two main parts. In this system, the pinion is a circular gear that engages with a flat, toothed component known as the rack.

Here’s how they work together to convert rotatory motion into linear motion: When the pinion rotates, its teeth mesh with those of the rack, causing the rack to move in a linear direction. It’s a beautifully simple way to change the type of movement. This mechanism is commonly used where precise linear motion is required in robotic systems and machinery.

Question 3

Enlist any five uses of gears in Robotics.

Gears are truly the unsung heroes inside a robot, making sophisticated movements possible. Let’s look at five of their most important jobs:

1. Power Transmission — Think of gears as the delivery system for movement. They are responsible for transmitting power from the motor, which is the robot’s heart, to the various parts that need to move, like its arms, grippers, or wheels.

2. Speed Reduction — A motor often spins incredibly fast, which isn’t always useful. By using specific gear ratios, robots can achieve Speed Reduction. This allows them to reduce the motor’s high speed while, as a fantastic trade-off, increasing the turning force (torque).

3. Torque Amplification — This is directly related to the previous point and is vital for a robot’s strength. Gears help to amplify torque. This is what allows robots to lift and manipulate heavy objects with relative ease, using a motor that might not be strong enough on its own.

4. Direction Change — Motion in a robot isn’t always along a single plane. When you need to change the axis of rotation, you need special gears. Bevel gears and miter gears are perfect examples used to achieve a Direction Change, often redirecting the rotational force at a 90-degree angle.

5. Linear Motion Conversion — Not all movement is spinning. Sometimes a robot needs to push, pull, or slide something in a straight line. For this, we use gear systems for Linear Motion Conversion. The classic Rack and pinion system is a perfect illustration of this, as it is used to convert rotational motion from a motor into precise linear motion.

Question 4

Explain the role of gears in robotic systems.

Think about a motor spinning inside a robot. That’s just raw power. How does that spinning get to a wheel or an arm to make it move in a controlled way? That’s the essential job of gears. Gears play an important role in robotic systems by transmitting motion and power from one component to another. But they do more than just pass the energy along. They are crucial because they help in changing the speed, torque (which is the turning force), and the very direction of motion. This control is precisely what allows the robot to move smoothly and perform tasks efficiently.

Question 5

What is meant by Sensors? Explain with the reference to Robotics.

Imagine how you sense the world around you—your eyes see light, your skin feels temperature. Sensors are devices that do something very similar for a machine. They are built to detect changes in physical conditions, such as light, temperature, pressure, motion, or distance. Their most important job is to convert these physical changes into electrical signals that a computer or a robot can understand.

In the world of robotics, sensors act like the sense organs of a robot. They are its eyes, ears, and sense of touch, constantly collecting information about its surroundings and its own internal state. This information is then sent to the robot’s control unit (you can think of this as its controller/brain). Based on the data received from the sensors, the controller makes intelligent decisions and directs the robot’s actions.

For example, a proximity sensor is what helps a robot detect nearby obstacles and avoid collisions, much like how you would put your hand out to avoid bumping into a wall in the dark. A vision sensor, which is basically a camera, allows a robot to perform object recognition and enables the accurate handling of objects, like picking a specific fruit from a pile.

Question 6(a)

Distinguish between Internal Sensors and External Sensors.

It’s helpful to think of a robot’s sensors in two distinct categories, almost like how we have an internal sense of our body’s position versus how we see and hear the world around us. Let’s break down the difference in a table.

Question 6(b)

Distinguish between Hydraulic Actuators and Pneumatic Actuators.

Alright, let’s break down the key differences between these two types of actuators. Think of it as comparing a weightlifter to a sprinter – both are powerful, but for very different jobs.

Question 6(c)

Distinguish between Automatic Control System and Manual Control System.

Alright, let’s break down the key differences between these two types of systems. Think of it as a ‘robot doing it itself’ versus ‘a human telling the robot what to do’.

Question 7

Mention any five functions of Sensors, applied in robots.

Think about how we use our own senses to understand the world. Sensors do the same job for a robot. Here are five essential functions they perform:

1. Environmental Awareness — This is how a robot perceives its surroundings. The sensors measure all sorts of elements, such as temperature, light, distance, and even chemical composition. This information enables robots to accurately interpret their environment and make informed choices about what to do next.
2. Robot Health Monitoring — Just like you might feel unwell, a robot needs to know its own internal status. The sensors keep a constant track of the internal conditions of robots, which is critical in helping them maintain optimal performance and catch problems early.
3. Informed Decision-Making — For a robot to work on its own, it can’t just guess. Sensors gather critical information from the environment, which feeds into the robot’s control system. This data helps robots to make informed decisions and perform tasks autonomously.
4. Navigation and Pathfinding — Imagine trying to find your way in the dark. The sensors act as a robot’s eyes and ears, helping them to map their surroundings. This ‘map’ allows them to detect obstacles and then calculate and choose safe and efficient routes.
5. Collision Avoidance — This is a crucial safety function. By continuously monitoring nearby objects, the sensors allow robots to detect and avoid collisions. This proactive awareness is vital for preventing damage to the robot itself, its environment, or any people around it.

Question 8

What is the role of actuators in Robotics?

Think of actuators as the muscles of a robot. They play a critical role because they are what allow the robots to interact with their surroundings by converting energy into movement.

In essence, they act as the driving force behind motion, faithfully responding to signals from a robot’s control system to produce physical actions. This action could be as straightforward as turning a wheel or as incredibly sophisticated as coordinating the complex motions of a multi-jointed robotic arm.

Beyond facilitating movement, actuators also enhance the ability of a robot to sense and adapt to its environment. This is because their movements can be incredibly fine-tuned. Ultimately, they are what enable robots to carry out tasks ranging from simple actions to complex operations with accuracy and precision.

Question 9

Enlist any five applications of actuators in daily life.

You might be surprised to learn that actuators are working all around us, every single day! Here are five common applications you’ve likely encountered:

1. Automotive Systems — Think about all the things that move automatically in a car. Actuators are the hidden motors that control various functions, from making automatic windows go up and down to handling power seat adjustments and even managing the precise flow of fuel injection.
2. Home Appliances — Right in our own kitchens and laundry rooms, actuators are the workhorses. In appliances like washing machines and dishwashers, they are responsible for crucial tasks like opening valves, rotating drums, or controlling water flow at just the right moment.
3. Smart Home Devices — The whole idea of a ‘smart home’ is powered by actuators. They are what allow smart blinds to open with the sunrise, enable automated doors to lock securely, and run many other smart devices that add convenience and security to our lives.
4. Medical Devices — In the medical field, where precision is critical, actuators play a vital role. They are precisely used in adjustable hospital beds to help patients, in advanced prosthetics to mimic movement, and in delicate surgical tools to assist doctors with incredibly fine and steady movements, which helps enhance patient comfort.
5. Industrial Equipment — Step into any modern factory, and you’ll see actuators are the muscles behind the machines. In manufacturing, actuators are crucial in robotic arms and machinery that perform repetitive tasks like assembly, packaging, and material handling.

Question 10

Explain the function of Control System with the reference to Robotics.

Think of the Control System as the brain and central nervous system of a robot. It’s the part that manages everything, making sure the robot does what it’s supposed to do. Its function can be broken down into a few key roles:

1. Monitoring: First and foremost, the control system is always watching. It constantly keeps an eye on the system’s parameters such as speed, temperature and position. This is to make sure all these values stay exactly within the desired range for the task at hand.
2. Decision-making: Based on the constant stream of information it gets from sensors or other feedback, the control system has to make smart choices. This Decision-making is all about figuring out how to adjust or maintain specific conditions to achieve the robot’s goal.
3. Execution: A decision is useless without action. In the Execution phase, the control system sends commands to the actuators or other components. This is what causes the physical action, like telling the motors exactly how to perform a task such as moving a robotic arm or instructing a heating element to adjust temperature.
4. Feedback Loop: How does the system know if its command worked correctly? This is where the clever part, the Feedback Loop, comes in. The result of the action—the output—is fed back to the controller. This loop allows the system to check its own work to ensure accurate performance and make necessary adjustments on the fly.
5. Error Correction: What happens if the feedback shows that something is off? The system immediately begins Error Correction. If a deviation from the desired condition is detected, the system intelligently adjusts parameters to minimise errors and maintain optimal performance. It’s constantly self-correcting to be as precise as possible.

Question 11

Explain the importance of integrating sensors, actuators and controllers in a robotic system.

Think about how we react to the world around us. A robot needs to do the same thing! Integrating sensors, controllers and actuators is absolutely essential for the proper functioning of a robotic system. Why? Because this teamwork ensures the robot gives an accurate response to real-time conditions.

Let’s break down the role of each team member:

• Sensors are like the robot’s senses. They detect environmental or internal conditions—for example, measuring distance, temperature, or speed—and send this information to the robot.
• The controller acts as the brain of the whole operation. It processes the sensor data it receives and then, using its programmed instructions, decides the required action.
• Actuators act as the muscles. After the controller makes a decision, the actuators get to work. They convert the controller’s electrical signals into physical, mechanical movement, such as moving a wheel/arm or gripping an object.

Thus, this seamless integration is what enables the robot to interact precisely with its environment, adapt to changes, and operate efficiently and autonomously.

Question 12

Draw a neat labelled diagram of a Control System used in Robotics.

Think of a robot’s Control System as its central nervous system. It’s the complete setup that allows the robot to take an input, process it, and produce a specific action. This labelled diagram shows you exactly how these components are laid out in Robotics: