Page 98 - Robotics and AI class 10
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•  Hydraulic Rotary Joint: Hydraulic actuators, coupled with a hydraulic rotary joint, can be used to create rotating
                joints in robots. The hydraulic actuator generates the rotary motion, while the hydraulic rotary joint allows the flow
                of hydraulic fluid to the actuator while maintaining a continuous connection. These joints are commonly found in
                heavy-duty industrial robots or construction equipment.
              •   Pneumatic Rotary Joint: Pneumatic actuators, combined with a pneumatic rotary joint, can create rotating joints
                that utilise compressed air or gas. Pneumatic rotary joints enable the transfer of pneumatic power to the actuator
                while allowing continuous rotation. They are often used in lightweight robotic systems or applications that require
                rapid movements.
            5.  Explain the types of Bevel gears.

          Ans.  There are two primary types of bevel gears:
              •   Straight Bevel Gears: Straight bevel gears have teeth that are straight and taper towards the apex of the gear cone.
                They are used when the intersecting shafts need to change the direction of rotation by 90 degrees.
              •   Spiral Bevel Gears: Spiral bevel gears have curved teeth that are angled in a spiral pattern around the gear cone. The
                spiral tooth arrangement allows for smoother engagement and quieter operation compared to straight bevel gears.
                Spiral bevel gears are commonly used when high torque transmission and reduced noise are required.


        C.  Competency-based/Application-based questions:                           #Creativity & Innovativeness

            1.  In the context of providing companionship and assistance to the elderly, how could robots be designed? What tasks
              could these robots assist with?
              a.   Robots are designed with advanced communication capabilities and programming which can assist with household
                 chores.
              b.  Robots are developed with high-speed mobility and trained to perform medical procedures.
              c.  Robots are created with complex decision-making skills and programmed for outdoor activities.
              d.  Robots are designed with emotion recognition abilities and trained to manage financial matters.

          Ans.  a.  Robots are designed with advanced communication capabilities and programming which can assist with household
                 chores.

            2.  If you design a robot to entertain people in a theme park. What kind of interactions and activities could the robot
              engage in to provide an enjoyable experience for visitors of different age groups?

          Ans.  The amusement park robot could be a customisable avatar that visitors can design. It could interact through voice
              commands and  visualise human  actions like running,  laughing,  etc.  It could  adapt  its behaviour  based on user
              preferences, providing personalised experiences.


                                               Unsolved Questions


                                         SECTION A (Objective Type Questions)
              uiz
        A.  Tick ( ) the correct option.

            1.  What is the purpose of worm gear?
              a.  To provide a high gear ratio                   b.  To transmit power over long distances

              c.  To change rotational direction                 d.  To reduce friction between two gears
            2.  Which actuator type is commonly used in applications that require continuous rotation?
              a.  Hydraulic actuator                             b.  Pneumatic actuator

              c.  Electric actuator                              d.  Magnetic actuator


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