Unit 1: Introduction to Robotics and Robot Anatomy - Practice Quiz

1 Which early device is commonly considered an important predecessor of modern robots?

2 The word "robot" was first introduced through a play written by which author?

3 Which classification describes robots according to their physical structure and joint arrangement?

4 A robot that operates mainly in a fixed location is called a:

5 Which component provides movement to a robot joint?

6 What is the main function of a sensor in a robotic system?

7 Which component makes decisions and sends commands to robot actuators?

8 What does one degree of freedom represent in a robot?

9 How many degrees of freedom does a simple object have when it can move only forward and backward along a straight line?

10 Which type of motion turns a robot link around an axis?

11 Which coordinate system uses perpendicular axes such as , , and ?

12 In a robot coordinate system, what does the -axis usually represent?

13 What is the workspace of a robot?

14 Which factor directly affects the size of a robot's workspace?

15 What is the end-effector of a robot?

16 What is the main purpose of a robot link?

17 Which manipulator uses three mutually perpendicular linear motions?

18 Which manipulator commonly has several rotary joints similar to a human arm?

19 What makes a mobile robot different from a stationary robot?

20 Which robot is most commonly used for repetitive welding in a factory?

21 Which development most directly enabled modern industrial robots to perform repeatable tasks with improved accuracy?

22 A factory replaces a fixed automation machine with a programmable robot because product models change frequently. Which historical trend does this illustrate?

23 A robot is selected for assembly because it moves vertically along a column and rotates around the column while maintaining a cylindrical work envelope. How is it classified by configuration?

24 A robot has three mutually perpendicular linear axes and is used to move parts precisely within a rectangular volume. Which classification best matches it?

25 A robot arm repeatedly misses its target because its controller does not receive accurate joint-angle measurements. Which component is most likely faulty?

26 Which component converts commands from the controller into physical movement at a robot joint?

27 A rigid object in three-dimensional space generally requires how many independent motions to specify its complete position and orientation?

28 A robot can translate along X, Y, and Z and rotate about the Z-axis, but it cannot independently control rotation about X or Y. What is its effective DOF?

29 A robot programmer wants to describe a point relative to the robot base rather than relative to the tool. Which coordinate system is most appropriate?

30 In joint coordinates, a robot motion command primarily specifies:

31 A robot's reachable workspace includes locations its tool can reach, but the tool cannot achieve the required orientation at some of them. What does this indicate?

32 A revolute robot joint is mechanically restricted to rotate between and . What is the most direct effect of this restriction?

33 In a robotic arm, which part is primarily responsible for connecting adjacent joints and transmitting loads between them?

34 A welding robot needs to change the angle of its welding torch without significantly changing the torch location. Which anatomical feature provides this capability?

35 Which manipulator is generally well suited for high-speed pick-and-place operations because of its lightweight parallel-link structure?

36 A manufacturer needs a robot for inserting components that offers selective compliance in the horizontal plane while remaining rigid vertically. Which type is most appropriate?

37 A warehouse robot must turn in place and move efficiently on a smooth floor. Which drive arrangement is most suitable?

38 A mobile robot uses cameras and range sensors to build a map while estimating its own changing position. Which capability is it demonstrating?

39 A robot loads parts into a machine inside a controlled factory cell, repeating the same motion throughout a shift. Which category best describes it?

40 A hospital robot delivers medicines through corridors shared with patients and staff. Which design priority is especially important for this application?

41 A manufacturing system changes from fixed-sequence automation to robots equipped with force sensing, vision, and adaptive control. Which capability most directly represents the major evolutionary transition involved?

42 An early industrial robot repeats a stored trajectory accurately, but it cannot compensate when a part is displaced by 8 mm. Which development would most fundamentally address this limitation?

43 A robot has fixed mounting, programmable motion, six revolute joints, and a gripper used for welding vehicle frames. Which classification is most specific?

44 A robot transports components through a warehouse, determines routes using lidar, and changes its destination when aisles are blocked. Which classification best captures its primary operating behavior?

45 A robot reaches commanded positions accurately when unloaded but develops large errors while lifting variable payloads. Which subsystem interaction should be investigated first?

46 A vision-guided pick-and-place robot consistently grasps objects 40 mm to the left of their actual locations, although joint encoders report correct positions. Which component-level fault is most likely?

47 A rigid object in three-dimensional space requires independent control of three translations and three rotations. A robot can control only three translations and rotation about the vertical axis. What is the primary limitation?

48 A planar serial robot has two revolute joints, but its task requires positioning a tool at while maintaining a specified tool orientation in the plane. What is the correct conclusion?

49 A robot has seven independently actuated joints but performs a task whose end-effector pose requires six coordinates. What property does the extra joint provide when the Jacobian has full row rank?

50 A camera detects an object at coordinates . The camera is mounted on the robot wrist, and the wrist pose relative to the robot base is . Which expression gives the object position in the base frame using homogeneous coordinates?

51 A tool must maintain a fixed orientation relative to the workpiece while the robot base rotates about a vertical axis. Which coordinate frame is most appropriate for defining the tool path?

52 A spherical-wrist manipulator has a nominal reach envelope that includes a target point, but the required tool orientation cannot be achieved there. What distinction explains this result?

53 Two consecutive links of a planar two-revolute-joint robot have lengths and . Ignoring joint limits and link thickness, which radial distances can its end effector reach?

54 In a serial articulated robot, the shoulder and elbow joints determine the wrist-center position, while three intersecting wrist axes determine tool orientation. Which structural feature is being described?

55 A robot's final link bends under payload, causing the gripper orientation to deviate even though joint angles are accurately measured. Which anatomical element is directly associated with the affected pose?

56 A manipulator uses three mutually orthogonal prismatic joints. Its motion envelope is a rectangular box, and its orientation remains fixed unless an external tool mechanism is added. Which manipulator type is it?

57 A robot requires a large vertical stroke, rotation around a central column, and radial extension. Which manipulator architecture best matches these requirements?

58 A differential-drive robot must move sideways without changing its heading. Under ideal nonholonomic wheel constraints, what is the correct conclusion?

59 A four-wheel omnidirectional mobile robot uses independently driven Swedish wheels. Compared with a conventional differential-drive robot, what capability is added?

60 An industrial robot repeats a high-speed welding path inside a guarded cell, while a hospital robot transports supplies among people and must react to changing routes. Which design priority differs most between the two systems?