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Page 80 - Toucpad robotics C11
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    B.  Long answer type questions.
                      1.  Describe the role of links and joints in forming a robot’s structure.
                         Ans.  Links are rigid parts; joints connect links and allow movement. Together, they give robots flexibility and
                               structure, much like bones and joints in the human body.
                      2.  Explain degrees of freedom with an example of a human arm vs. robotic arm.

                         Ans.  A human arm has multiple DOFs—shoulder rotation, elbow bending, wrist turning. Similarly, a robotic arm
                               has DOFs at its joints, defining how freely it can move in space.
                      3.  Discuss different materials used in constructing robots and their advantages.
                         Ans.  MDF and Acrylic are low-cost, good for prototypes. Aluminium is lightweight and strong. Steel is durable
                               but heavy. Each material is chosen based on strength, weight, and cost needs.
                      4.  Write a detailed note on workspace and payload of robots.

                         Ans.  Workspace defines the physical area a robot can reach, while payload is the maximum load it can handle.
                               Together, they determine robot efficiency in industries like automobile or electronics.

                      5.  Explain the significance of wheels (omni, mecanum) in robot mobility.
                         Ans.  Special wheels allow smooth movement in all directions. Mecanum and omni wheels improve flexibility,
                               crucial in warehouses, factories, and research robots.

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                  C.  Competency-based questions:     HOTS                                            Century   #Digital Literacy
                                                                                                       Skills
                      1.   You are designing a warehouse robot to move boxes. What material and wheel type would you choose? Justify
                         your decision.
                         Ans.  Aluminium  for structure  (light  and  strong), and  omni/mecanum  wheels for flexible  navigation  in  tight
                               spaces.

                      2.   Suppose your robotic arm must paint a car’s surface evenly. Which mechanical features (DOFs, workspace,
                         end-effector design) would be most important?

                         Ans.  Multiple DOFs for full coverage, large workspace to reach surfaces, and a spray-paint end-effector for
                               precision.

                                                                                                   Unsolved Questions
                                                    SECTION A   (Objective Type Questions)
                     QUIZ
                  A.  Tick ( ) the correct option.
                      1.  The concept of degrees of freedom in robotics is most closely related to:

                           i.  Weight of the robot                         ii.  Number of independent motions possible
                          iii.  Speed of motors                           iv.  Power consumption
                      2.  If a robotic arm has 3 links and 3 joints, the maximum possible degrees of freedom will be:

                           i.  2                                           ii.  3
                          iii.  6                                         iv.  9

                      3.  Which of the following correctly represents a planar mechanism?
                           i.  Drone propeller system                      ii.  Robotic scissor lift
                          iii.  Humanoid walking motion                   iv.  Robotic arm with 3D rotation

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                  Touchpad Robotics - XI

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