Exploring Robotics & AI Solutions Class 10: Chapter 2

Answer: Humanoid Robot.

Reason: A humanoid robot is designed to resemble the human body. If the picture shows a robot with a head, torso, arms and legs, the correct category is Humanoid Robot, not an ordinary industrial or mobile robot.

Answer: All of these.

Reason: A pulley, an inclined plane and a lever are all simple machines. The usual list of simple machines includes lever, wheel and axle, pulley, inclined plane, wedge and screw.

Answer: Czech.

Reason: The term robot is linked with the Czech word robota, meaning forced labour or compulsory work. In this chapter, this origin helps explain why early ideas of robots were connected with labour-saving machines.

Answer: collaborative.

Reason: Cobot is the shortened form of collaborative robot. The key word is collaborative because the robot is designed to work near or with human workers.

Answer: They are comparatively costlier than traditional industrial robots.

Reason: In the textbook context, cobots are presented as sensor-equipped, safer for human interaction and useful for automating repetitive tasks. They are also usually described as more accessible and lower in overall setup cost than many traditional industrial robot installations. Exact market prices can vary by model, payload and accessories, but the statement given in option 4 is the one treated as not true in this exercise.

Answer: Universal Robot (UR20).

Reason: The Universal Robots UR20 is a collaborative robotic arm. A washing machine and microwave oven are machines, while an iRobot/Roomba-type vacuum cleaner is an autonomous cleaning robot. The UR20 is the option that matches the chapter idea of a cobot.

Answer: Both A and R are true and R is not the correct explanation of A.

Step 1: In the exercise context, the assertion is accepted as true because the name Kismet is connected with the meaning fate or luck.

Step 2: The reason is also true because Kismet was designed for social interaction and could show facial expressions.

Step 3: But the reason explains what Kismet does; it does not explain why the word means fate or luck. Therefore, R is not the correct explanation of A.

Answer: A machine is a device used to make work easier or to perform a specific task by using energy. It may reduce effort, change the direction of force, increase speed or help in doing work more accurately. Simple machines include levers, pulleys and inclined planes. More complex machines include engines, washing machines and computers.

Answer: A robot is a programmable machine that can perform a task with little or no human intervention. A typical robot uses sensors to collect information, a controller or program to process the information, and actuators such as motors or grippers to perform the action. Robots are used where work is repetitive, precise, dangerous or difficult for humans.

Answer: An industrial robot is a robot used in manufacturing or production work. It can perform repetitive tasks such as welding, lifting, assembly, painting, packaging or material handling with precision and consistency. Unimate is widely recognised as the first industrial robot and is associated with George Devol. Industrial robots are useful because they can take over hazardous or repeated factory tasks.

Answer: A cobot is a collaborative robot designed to work alongside humans. Unlike many traditional industrial robots that operate behind guards or cages, cobots use safety features such as sensors, force limiting and collision detection to reduce risk in shared workspaces. They are used for tasks such as assembly, packaging, quality checking, welding and material handling.

Answer: An agricultural cobot is a collaborative robot used to support farming tasks. It may help in delicate crop handling, picking, sorting, monitoring or repetitive farm work. Singrow is used in the chapter as an example of an agricultural cobot. Such cobots can reduce manual strain and help workers handle crops more consistently.

Answer: A retail cobot is a collaborative robot used in shops or stores to support staff. It may help in scanning shelves, checking inventory, stocking products and guiding customers. Nova is used in this chapter as an example of a retail cobot. The main idea is that the robot assists human workers rather than replacing the whole retail process.

Answer: The main features of a machine are:

1. Use of energy: A machine uses energy to perform work. For example, a fan uses electrical energy to produce mechanical rotation.
2. Reduction of effort: It makes work easier by reducing the force, time or manual effort needed.
3. Mechanical advantage: Some machines allow a small input force to produce a larger useful effect. A jack lifting a car is a simple example.
4. Accuracy: Machines can be designed to perform tasks with repeated accuracy.
5. Speed and productivity: Machines can complete repeated work faster than manual methods.
6. Automation in advanced machines: Modern machines may include sensors, controllers or AI-based systems to operate semi-automatically or automatically.

Answer: The term robot is credited in school-level robotics history to the Czech writer Karel Čapek, who introduced it in his play R.U.R. (Rossum’s Universal Robots). The word is linked with the Czech word robota, meaning forced labour or compulsory work.

Exam note: Write both parts: the name Karel Čapek and the meaning forced labour. Writing only one of them gives an incomplete answer.

Answer: A Pick and Place robot is useful because it can lift an object from one position and place it accurately at another position.

1. It first identifies or receives the position of the object.
2. Its gripper or end effector picks up the object.
3. The robotic arm moves or swivels to the target location.
4. It places the object at the required point with controlled motion.

This is useful in industries where small parts must be handled quickly and accurately, such as electronic components, watch parts, packaging lines and assembly work.

Answer: Kismet is significant because it is studied as an early social robot that focused on human-robot interaction. It used facial expressions and responses to interact with people in a more natural way than a simple mechanical device.

1. It showed that robots could be designed not only to move objects but also to communicate socially.
2. It used visual and auditory input to respond to human behaviour.
3. It helped develop ideas in emotional expression, social robotics and affective computing.
4. It is a useful example when explaining how future robots may work with humans in homes, schools, hospitals and service environments.

Answer: Important characteristics of a robot are:

1. Programmability: A robot follows a program or set of instructions.
2. Sensing: It uses sensors to detect information such as distance, touch, light, sound or position.
3. Actuation: It uses motors, wheels, arms, grippers or other actuators to perform actions.
4. Autonomy: It can perform tasks with reduced human control, depending on its design.
5. Precision: It can perform repeated actions accurately.
6. Consistency: It can repeat the same task many times with less variation.
7. Interaction: Many robots can interact with their environment through sensors and control systems.
8. Adaptability: Advanced robots can respond to changes in their surroundings using programmed rules or AI-based decision making.

Answer: Cobots are suitable for collaborative tasks because they are designed for safe human-robot interaction. Their purpose is not only to automate a task but also to allow a human worker and robot to share a workspace.

1. They may have sensors to detect nearby humans or obstacles.
2. They may use collision detection and force-limiting features.
3. They are often easier to program than many traditional industrial robots.
4. They can be moved or reassigned to different tasks in small production setups.
5. They are useful for repeated tasks where human supervision, judgment or finishing work is still needed.

Answer: The characteristics of a cobot are:

1. Collaboration: It is designed to work with humans, not only away from them.
2. Safety features: It may include sensors, force control and collision detection.
3. Ease of use: Many cobots are designed to be programmed or guided more easily.
4. Flexibility: A cobot can often be used for different tasks such as assembly, packing or inspection.
5. Repetitive-task automation: It can take over repeated actions while humans handle supervision or decisions.
6. Cost accessibility: In the textbook context, cobots are treated as more accessible than large traditional industrial robot installations.

Answer: To identify whether a device is a robot or a machine, check how it works.

Conclusion: Every robot is a machine, but every machine is not a robot.

Answer: Three applications of cobots are:

1. Agriculture: Cobots can assist in crop handling, sorting or farm support tasks. Singrow is the chapter example.
2. Cleaning: Cleaning cobots can help in offices, hospitals and other indoor spaces. Whiz is the chapter example.
3. Retail: Retail cobots can help in shelf scanning, stock checking and customer assistance. Nova is the chapter example.

These examples show that cobots are not limited to factories; they can support human work in daily environments too.